CN209897309U - High-voltage linear dimming circuit - Google Patents
High-voltage linear dimming circuit Download PDFInfo
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- CN209897309U CN209897309U CN201821665646.1U CN201821665646U CN209897309U CN 209897309 U CN209897309 U CN 209897309U CN 201821665646 U CN201821665646 U CN 201821665646U CN 209897309 U CN209897309 U CN 209897309U
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Abstract
The utility model belongs to the technical field of solar light source plate dimming, a high-voltage linear dimming circuit is provided, which comprises a control IC module, a power supply module, a multi-way switch module and a light source plate, and is characterized in that the power supply module is respectively connected with the control IC module and the light source plate, the control IC module is connected with the multi-way switch module, and the multi-way switch module is connected with the light source plate; the utility model discloses a control IC module converts 0-10V's analog signal into PWM signal of adjusting luminance, and PWM signal input multi-way switch module of adjusting luminance controls the on-off state of multi-way switch module, and then reaches the purpose of linear dimming.
Description
Technical Field
The utility model relates to a high-voltage linear dimming circuit belongs to the LED lighting technology field.
Background
In market, domestic dimming lamps and lanterns's application occasion, all need use dimmer circuit, generally have analog dimming mode, digital dimming mode and potentiometre dimming mode, generally adjust luminance only a few gears, especially analog dimming mode can not realize the purpose of linear dimming, causes the inconvenience for customer's application.
Disclosure of Invention
The utility model aims at overcoming the not enough of existence among the prior art, provide a high-voltage linear dimming circuit, through controlling the IC module with 0-10V's analog signal conversion for PWM signal of adjusting luminance, PWM signal input multi-way switch module of adjusting luminance controls multi-way switch module's on-off state, and then reaches the purpose of linear dimming.
For realizing the above technical purpose, the utility model discloses a technical scheme is: the utility model provides a high-voltage linear dimming circuit, includes control IC module, power module, multi-way switch module and light source board, its characterized in that, power module is connected with control IC module, light source board respectively, control IC module and multi-way switch module are connected, multi-way switch module and light source board are connected.
Furthermore, the power supply module comprises a 220V high-voltage AC power supply, an anti-surge circuit, a rectification filter circuit and a voltage-reduction constant-current IC module, wherein the 220V high-voltage AC power supply is connected with the anti-surge circuit, the anti-surge circuit is connected with the rectification filter circuit, and the rectification filter circuit is connected with the voltage-reduction constant-current IC module.
Further, the anti-surge circuit is composed of a resistor RFM1, a resistor RFM2, a voltage dependent resistor CMS1 and a fuse FU1, the rectifying and filtering circuit comprises a rectifying bridge DB1, a filtering capacitor C9 and a filtering capacitor C10, the voltage-reducing constant-current IC module comprises a voltage-reducing constant-current IC chip U4 and a voltage-reducing constant-current IC chip U5, and the rectifying and filtering circuit is composed of 4 diodes;
the positive pole and the negative pole of the AC power supply are respectively connected with one ends of a resistor RFM1 and a resistor RFM2, the other end of the resistor RFM1 is connected with one end of a piezoresistor CMS1 through a group of fuses FU1, and the other end of the resistor RFM2 is connected with the other end of the piezoresistor CMS 1; meanwhile, the two ends of the voltage dependent resistor CMS1 are connected to the 1 st pin and the 2 nd pin of the rectifier bridge DB1, the 4 th pin of the rectifier bridge DB1 is grounded, the 3 rd pin is connected with the positive plates of the filter capacitor C9 and the filter capacitor C10, the positive plates are grounded through series resistors R14 and R15, and the negative plates of the filter capacitor C9 and the filter capacitor C10 are grounded; the 3 rd pin of the rectifier bridge DB1 is connected with the 4 th pin of a voltage-reducing constant-current IC chip U4, the 1 st pin of the voltage-reducing constant-current IC chip U4 is connected with the 4 th pin of a voltage-reducing constant-current IC chip U5 through a resistor R41, the 3 rd pin of the voltage-reducing constant-current IC chip U4 is connected with the 4 th pin of the voltage-reducing constant-current IC chip U5 through a resistor R42, the 1 st pin and the 3 rd pin of the voltage-reducing constant-current IC chip U5 output 12V low-voltage direct-current voltage through resistors R44 and R43 respectively, and the 12V low-voltage direct current is; the 3 rd pin of the rectifier bridge DB1 is connected with the anode of the light source plate.
Furthermore, the control IC module comprises a control IC chip U3, a voltage stabilizing IC chip U2 and a chip U1 for generating sawtooth wave signals, pins 1 and 7 of the control IC chip U3 are grounded, a pin 2 is connected with a 0-10V direct current voltage processing circuit and is input with a 0-10V direct current voltage signal, a pin 3 is connected with the chip U1 and is input with sawtooth wave signals, a pin 4 is connected with the base of a switch tube Q1, the collector of the switch tube Q1 is connected with a pin 5 through a resistor R8, the pin 5 is connected with the base of a switch tube Q1 through a resistor R7, the pin 5 is used as the power supply end of the control IC chip U3 and is connected with the voltage stabilizing output end of the voltage stabilizing IC chip U2 together with the power supply end of the chip U1, pins 9 and 11 are connected with the multi-way switch module, the pin 12 is connected with the pin 5 through a resistor R9 and is connected with the collector of the switch tube Q2 through a resistor R11, the emitters of the switching tubes Q1 and Q2 are grounded, the base of the switching tube Q2 is connected with the connecting line of the series resistor R12 and the resistor R13, and the resistor R12 is connected with the collector of the switching tube Q1 through the resistor R10; pins 6, 8, 10, 13-16 of the control IC chip U3 are all suspended.
Furthermore, the 1 st pin of the regulated IC chip U2 is connected to the power supply module for inputting 12V low-voltage dc voltage, and is grounded through a regulated diode DZ1, a capacitor C2 and a capacitor C3 which are connected in parallel, the anode of the regulated diode DZ1 is grounded, the 2 nd pin of the regulated IC chip U2 is grounded, and is connected to the 3 rd pin through a capacitor C1, and the 3 rd pin of the regulated IC chip U2 is connected to the 5 th pin of the control IC chip U3 and is connected to the chip U1.
Furthermore, the 1 st pin of the chip U1 is grounded, and is connected to the 2 nd pin through a capacitor C8, the 2 nd pin is connected to the 7 th pin through a diode D4 and a diode D5 connected in series, and is connected to the 3 rd pin of the voltage stabilizing IC chip U2 through a resistor R5, the 3 rd pin of the chip U1 is grounded, the 4 th pin of the chip U1 is connected to the 3 rd pin of the voltage stabilizing IC chip U2, the 5 th pin is connected to the 3 rd pin of the voltage stabilizing IC chip U2 through a resistor R6, the 6 th pin is connected to the 3 rd pin of the control IC chip U3, and is connected to the 3 rd pin of the voltage stabilizing IC chip U2 through a resistor R5, and the 8 th pin is connected to the 3 rd pin of the voltage stabilizing IC chip U2.
Further, the 0-10V DC voltage processing circuit includes a 0-10V DC power supply DC1, the positive pole of the 0-10V DC power supply DC1 is connected to the 3 rd pin of the regulated IC chip U2 through a resistor R1, and is also connected to ground through a resistor R4, the negative pole is connected to ground through a diode D2, the resistor R4 is connected in parallel with a capacitor C4, the positive pole of the 0-10V DC power supply DC1 is connected to the negative pole of a diode D1, the positive pole of the diode D1 is connected to the 2 nd pin of the control IC chip U3, and is also connected to ground through a capacitor C5 and a capacitor C6 connected in parallel, the positive pole of the diode D1 is also connected to one end of a resistor R3, the other end of the resistor R3 is connected to the 3 rd pin of the regulated IC chip U2, one end of the resistor R2 is connected to the 3 rd pin of the regulated IC chip U2, the 4 th pin of the chip U1, the other control IC chip U63, The diode D3 is grounded, and the anode of the diode D3 is grounded.
Further, the multi-way switch module comprises 8 groups of switch channels which are connected in parallel, the first group of switch channels respectively comprises a MOS switch tube M1, the drain electrode of the MOS switch tube M1 is connected with the negative electrode of the light source plate, the grid electrode is connected with the 11 th pin of the control IC chip U3 through a resistor R16, the source electrode is connected with the 9 th pin of the control IC chip U3 through a resistor R32, the source electrode and the grid electrode are connected with a resistor R24 indirectly, and the resistor 32 is grounded through a resistor R40; the second group of switch channels respectively comprise MOS switch tubes M2, the drain electrodes of the MOS switch tubes M2 are connected with the negative electrodes of the light source plates, the grid electrodes are connected with the 11 th pin of the control IC chip U3 through a resistor R17, the source electrodes are grounded through a resistor R33, and the source electrodes and the grid electrodes are indirectly connected with a resistor R25; the third group of switch channels respectively comprise MOS switch tubes M3, the drain electrodes of the MOS switch tubes M3 are connected with the negative electrodes of the light source plates, the grid electrodes are connected with the 11 th pin of the control IC chip U3 through a resistor R18, the source electrodes are grounded through a resistor R34, and the source electrodes and the grid electrodes are indirectly connected with a resistor R26; the fourth group of switch channels respectively comprise MOS switch tubes M4, the drain electrodes of the MOS switch tubes M4 are connected with the negative electrodes of the light source plates, the grid electrodes of the MOS switch tubes M4 are connected with the 11 th pin of the control IC chip U3 through a resistor R19, the source electrodes of the MOS switch tubes M4 are grounded through a resistor R35, and the source electrodes and the grid electrodes of the MOS switch tubes M27 are indirectly connected; the fifth group of switch channels respectively comprise MOS switch tubes M5, the drain electrodes of the MOS switch tubes M5 are connected with the negative electrodes of the light source plates, the grid electrodes of the MOS switch tubes M5 are connected with the 11 th pin of the control IC chip U3 through a resistor R20, the source electrodes of the MOS switch tubes M5 are grounded through a resistor R36, and the source electrodes and the grid electrodes of the MOS switch tubes M28 are indirectly connected; the sixth group of switch channels respectively comprise MOS switch tubes M6, the drain electrodes of the MOS switch tubes M6 are connected with the negative electrodes of the light source plates, the grid electrodes of the MOS switch tubes M6 are connected with the 11 th pin of the control IC chip U3 through a resistor R21, the source electrodes of the MOS switch tubes M6 are grounded through a resistor R37, and the source electrodes and the grid electrodes of the MOS switch tubes M29 are indirectly connected; the seventh group of switch channels respectively comprise MOS switch tubes M7, the drain electrodes of the MOS switch tubes M7 are connected with the negative electrodes of the light source plates, the grid electrodes of the MOS switch tubes M7 are connected with the 11 th pin of the control IC chip U3 through a resistor R22, the source electrodes of the MOS switch tubes M7 are grounded through a resistor R38, and the source electrodes and the grid electrodes of the MOS switch tubes M30 are indirectly connected; the eighth group of switch channels respectively comprise a MOS switch tube M8, the drain electrode of the MOS switch tube M8 is connected with the cathode of the light source plate, the grid electrode is connected with the 11 th pin of the control IC chip U3 through a resistor R23, the source electrode is grounded through a resistor R39, and the source electrode and the grid electrode are connected with a resistor R31 indirectly.
Further, the light source board includes light emitting diodes LEDs 1.
As can be seen from the above description, the technical effects of the present invention are:
1) the utility model converts the processed 0-10V analog signal into PWM dimming signal through the control IC module, and then the PWM dimming signal is inverted and amplified through the switch tube Q1 and the switch tube Q2, and then the processed PWM dimming signal is input into the multi-way switch module, and the state of the multi-way switch channel of the multi-way switch module is controlled, so as to realize the purpose of linear dimming;
2) the utility model discloses a power module is used for supplying power for whole circuit, and power module is after anti surge, rectification filtering process with 220V's high-voltage alternating current, and after being converted into 12V low voltage direct current through steady voltage step-down processing, it is 6V low voltage direct current to step-down through three-terminal steady voltage IC module U2 to input control IC chip U3 and chip U1, as supply voltage;
3) the control IC chip U3 of the utility model is the core of the whole circuit, and mainly converts the input 0-10V analog signal into PWM dimming signal and controls the state of the multi-way switch channel of the multi-way switch module;
4) the utility model discloses chip U1 is used for producing oscillating signal, generates sawtooth wave signal and input control IC chip U3.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention.
Fig. 2 is a schematic circuit diagram of the present invention.
Description of reference numerals: 1-control IC module, 2-power supply module, 3-multi-way switch module and 4-light source board.
Detailed Description
The invention is further described with reference to the following specific drawings and examples.
According to fig. 1 and fig. 2, a high-voltage linear dimming circuit includes a control IC module 1, a power supply module 2, a multi-way switch module 3, and a light source board 4, wherein the power supply module 2 is connected to the control IC module 1 and the light source board 4, the control IC module 1 is connected to the multi-way switch module 3, and the multi-way switch module 3 is connected to the light source board 4.
The power supply module 2 comprises a 220V high-voltage AC power supply, an anti-surge circuit, a rectification filter circuit and a voltage-reduction constant-current IC module, wherein the 220V high-voltage AC power supply is connected with the anti-surge circuit, the anti-surge circuit is connected with the rectification filter circuit, and the rectification filter circuit is connected with the voltage-reduction constant-current IC module;
the anti-surge circuit comprises a resistor RFM1, a resistor RFM2, a voltage dependent resistor CMS1 and a fuse FU1, the rectifying and filtering circuit comprises a rectifying bridge DB1, a filtering capacitor C9 and a filtering capacitor C10, the rectifying and filtering circuit comprises 4 diodes, and the voltage-reducing constant-current IC module comprises a voltage-reducing constant-current IC chip U4 and a voltage-reducing constant-current IC chip U5;
the positive pole and the negative pole of the AC power supply are respectively connected with one ends of a resistor RFM1 and a resistor RFM2, the other end of the resistor RFM1 is connected with one end of a piezoresistor CMS1 through a group of fuses FU1, and the other end of the resistor RFM2 is connected with the other end of the piezoresistor CMS 1; meanwhile, the two ends of the voltage dependent resistor CMS1 are connected to the 1 st pin and the 2 nd pin of the rectifier bridge DB1, the 4 th pin of the rectifier bridge DB1 is grounded, the 3 rd pin is connected with the positive plates of the filter capacitor C9 and the filter capacitor C10, the positive plates are grounded through series resistors R14 and R15, and the negative plates of the filter capacitor C9 and the filter capacitor C10 are grounded; a 3 rd pin of the rectifier bridge DB1 is connected with a 4 th pin of a voltage-reducing constant-current IC chip U4, a 1 st pin of the voltage-reducing constant-current IC chip U4 is connected with a 4 th pin of a voltage-reducing constant-current IC chip U5 through a resistor R41, a 3 rd pin of the voltage-reducing constant-current IC chip U4 is connected with a 4 th pin of the voltage-reducing constant-current IC chip U5 through a resistor R42, the 1 st pin and the 3 rd pin of the voltage-reducing constant-current IC chip U5 output 12V low-voltage direct-current voltage through resistors R44 and R43 respectively, and the 12V low-voltage direct current is connected; the 3 rd pin of the rectifier bridge DB1 is connected with the anode of the light source plate 4.
The control IC module 1 comprises a control IC chip U3, a voltage stabilization IC chip U2 and a chip U1 for generating sawtooth wave signals, pins 1 and 7 of the control IC chip U3 are grounded, a pin 2 is connected with a 0-10V direct current voltage processing circuit and inputs a 0-10V direct current voltage signal, a pin 3 is connected with a chip U1 for inputting sawtooth wave signals, a pin 4 is connected with the base of a switch tube Q1, the collector of the switch tube Q1 is connected with a pin 5 through a resistor R8, the pin 5 is connected with the base of the switch tube Q1 through a resistor R7, the pin 5 is used as the power supply end of the control IC chip U3 and is connected with the output end of the voltage stabilization IC chip U2 for three-terminal voltage stabilization together with the power supply end of the chip U1, pins 9 and 11 are connected with a multi-way switch module 3, the pin 12 is connected with the pin 5 through a resistor R9 and is connected with the collector of the switch tube Q2 through a resistor R11, the emitters of the switching tubes Q1 and Q2 are grounded, the base of the switching tube Q2 is connected with the connecting line of the series resistor R12 and the resistor R13, and the resistor R12 is connected with the collector of the switching tube Q1 through the resistor R10; pins 6, 8, 10, 13-16 of the control IC chip U3 are all suspended;
the 1 st pin of the voltage-stabilizing IC chip U2 is connected with the 12V low-voltage direct-current voltage input by the power supply module 2, and is grounded through a voltage-stabilizing diode DZ1, a capacitor C2 and a capacitor C3 which are connected in parallel, the anode of the voltage-stabilizing diode DZ1 is grounded, the 2 nd pin of the voltage-stabilizing IC chip U2 is grounded and is connected with the 3 rd pin through a capacitor C1, and the 3 rd pin of the voltage-stabilizing IC chip U2 is connected with the 5 th pin of the control IC chip U3 and is connected with the chip U1;
the 1 st pin of the chip U1 is grounded, and is connected with the 2 nd pin through a capacitor C8, the 2 nd pin is connected with the 7 th pin through a diode D4 and a diode D5 which are connected in series, and is connected with the 3 rd pin of the voltage stabilizing IC chip U2 through a resistor R5, the 3 rd pin of the chip U1 is grounded, the 4 th pin of the chip U1 is connected with the 3 rd pin of the voltage stabilizing IC chip U2, the 5 th pin is connected with the 3 rd pin of the voltage stabilizing IC chip U2 through a resistor R6, the 6 th pin is connected with the 3 rd pin of the control IC chip U3, and is connected with the 3 rd pin of the voltage stabilizing IC chip U2 through a resistor R5, and the 8 th pin is connected with the 3 rd pin of the voltage stabilizing IC chip;
the 0-10V direct-current voltage processing circuit comprises a 0-10V direct-current power supply DC1, wherein the positive pole of the 0-10V direct-current power supply DC1 is connected with the 3 rd pin of a voltage-stabilizing IC chip U2 through a resistor R1 and is grounded through a resistor R4, the negative pole of the 0-10V direct-current power supply DC1 is grounded through a diode D2, the resistor R4 is connected with a capacitor C4 in parallel, the positive pole of the 0-10V direct-current power supply DC1 is connected with the negative pole of a diode D1, the positive pole of a diode D1 is connected with the 2 nd pin of a control IC chip U3 and is grounded through a capacitor C5 and a capacitor C6 which are connected in parallel, the positive pole of a diode D1 is also connected with one end of a resistor R3, the other end of the resistor R3 is connected with the 3 rd pin of the voltage-stabilizing IC chip U2, one end of the resistor R2 is connected with the 3 rd pin of the voltage-stabilizing IC chip U829, the, the anode of the diode D3 is grounded.
The multi-path switch module 3 comprises 8 groups of switch channels which are mutually connected in parallel, the first group of switch channels respectively comprises an MOS switch tube M1, the drain electrode of the MOS switch tube M1 is connected with the negative electrode of the light source plate 4, the grid electrode is connected with the 11 th pin of the control IC chip U3 through a resistor R16, the source electrode is connected with the 9 th pin of the control IC chip U3 through a resistor R32, the source electrode and the grid electrode are connected with a resistor R24 indirectly, and the resistor 32 is grounded through a resistor R40; the second group of switch channels respectively comprise MOS switch tubes M2, the drain electrodes of the MOS switch tubes M2 are connected with the negative electrodes of the light source plates 4, the grid electrodes of the MOS switch tubes are connected with the 11 th base pin of the control IC chip U3 through resistors R17, the source electrodes of the MOS switch tubes are grounded through resistors R33, and the source electrodes and the grid electrodes of the MOS switch tubes are indirectly connected with resistors R25; the third group of switch channels respectively comprise MOS switch tubes M3, the drain of the MOS switch tube M3 is connected with the cathode of the light source plate 4, the grid is connected with the 11 th pin of the control IC chip U3 through a resistor R18, the source is grounded through a resistor R34, and the source and the grid are connected with a resistor R26 indirectly; the fourth group of switch channels respectively comprise MOS switch tubes M4, the drain of the MOS switch tube M4 is connected with the cathode of the light source plate 4, the grid is connected with the 11 th pin of the control IC chip U3 through a resistor R19, the source is grounded through a resistor R35, and the source and the grid are connected with a resistor R27 indirectly; the fifth group of switch channels respectively comprise MOS switch tubes M5, the drain electrodes of the MOS switch tubes M5 are connected with the negative electrodes of the light source plates 4, the grid electrodes of the MOS switch tubes are connected with the 11 th base pin of the control IC chip U3 through resistors R20, the source electrodes of the MOS switch tubes are grounded through resistors R36, and the source electrodes and the grid electrodes of the MOS switch tubes are indirectly connected with resistors R28; the sixth group of switch channels respectively comprise MOS switch tubes M6, the drain electrodes of the MOS switch tubes M6 are connected with the negative electrodes of the light source plates 4, the grid electrodes of the MOS switch tubes are connected with the 11 th base pin of the control IC chip U3 through resistors R21, the source electrodes of the MOS switch tubes are grounded through resistors R37, and the source electrodes and the grid electrodes of the MOS switch tubes are indirectly connected with resistors R29; the seventh group of switch channels respectively comprise MOS switch tubes M7, the drain electrodes of the MOS switch tubes M7 are connected with the negative electrodes of the light source plates 4, the grid electrodes of the MOS switch tubes are connected with the 11 th base pin of the control IC chip U3 through resistors R22, the source electrodes of the MOS switch tubes are grounded through resistors R38, and the source electrodes and the grid electrodes of the MOS switch tubes are indirectly connected with resistors R30; the eighth group of switch channels respectively comprise a MOS switch tube M8, the drain electrode of the MOS switch tube M8 is connected with the cathode of the light source plate 4, the grid electrode is connected with the 11 th pin of the control IC chip U3 through a resistor R23, the source electrode is grounded through a resistor R39, and the source electrode and the grid electrode are connected with a resistor R31 indirectly.
The light source board 4 is a light emitting diode LED1 in this embodiment.
In this embodiment, the control IC chip U3 is an integrated chip NK8212, the chip U1 is an oscillator NE555, the chip U2 is a three-terminal regulated voltage HT75C0-3, and the buck chip U4/U5 is an integrated chip NK 8204.
The utility model discloses a principle of adjusting luminance does: the utility model discloses a through control IC module 1 with the analog signal of 0-10V after handling (accomplished by 0-10V direct current voltage processing circuit) convert PWM dimming signal into, through switch tube Q1 and switch tube Q2, carry out opposition and amplification to PWM dimming signal, again with the PWM dimming signal input multi-way switch module 3 after handling, control the state of multi-way switch module 3's multi-way switch passageway, realized the purpose of analog-to-digital conversion, even linear dimming, and the commonality is very strong;
the control IC chip U3 is the core of the whole circuit, and the IN2+ pin inputs 0-10V direct current voltage; IN 2-input sawtooth wave; the pin OUT2 outputs a PWM dimming signal, the PWM dimming signal is subjected to inversion and amplification operations through the switching tubes Q1 and Q2, and then outputs a processed PWM dimming signal together with the 11 th pin, and after the signal is connected to the multi-way switch module 3, the state of the multi-way switch channel of the multi-way switch module 3 is controlled, so that the light emitting effect of the light source board 4 is adjusted, and a linear dimming effect is realized;
the chip U1 is used for generating oscillation and generating sawtooth waves to be input into the control IC chip U3; the DC1 part of the 0-10V direct-current power supply is an access port of the 0-10V direct-current power supply; the power supply module 2 is used for supplying power to the whole circuit, and the power supply module converts 220V high-voltage alternating current into 12V low-voltage direct current after surge resistance and rectification filtering processing, and then the 12V low-voltage direct current is subjected to voltage reduction processing by a three-terminal voltage-stabilizing IC chip U2 and is reduced into 6V low-voltage direct current, and the 6V low-voltage direct current is input to a control IC chip U3 and a chip U1 and serves as power supply voltage.
The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Without departing from the spirit of the present invention, it is within the scope of the present invention to design the structure and embodiments similar to the above technical solutions without creativity.
Claims (9)
1. The utility model provides a high-voltage linear dimming circuit, includes control IC module (1), power module (2), multi-way switch module (3) and light source board (4), its characterized in that, power module (2) are connected with control IC module (1), light source board (4) respectively, control IC module (1) is connected with multi-way switch module (3), multi-way switch module (3) are connected with light source board (4).
2. The high voltage linear dimming circuit of claim 1, wherein: the power supply module (2) comprises a 220V high-voltage AC power supply, an anti-surge circuit, a rectification filter circuit and a voltage-reduction constant-current IC module, wherein the 220V high-voltage AC power supply is connected with the anti-surge circuit, the anti-surge circuit is connected with the rectification filter circuit, and the rectification filter circuit is connected with the voltage-reduction constant-current IC module.
3. The high voltage linear dimming circuit of claim 2, wherein: the anti-surge circuit comprises a resistor RFM1, a resistor RFM2, a voltage dependent resistor CMS1 and a fuse FU1, the rectifying and filtering circuit comprises a rectifying bridge DB1, a filtering capacitor C9 and a filtering capacitor C10, the rectifying and filtering circuit comprises 4 diodes, and the voltage-reducing constant-current IC module comprises a voltage-reducing constant-current IC chip U4 and a voltage-reducing constant-current IC chip U5;
the positive pole and the negative pole of the AC power supply are respectively connected with one ends of a resistor RFM1 and a resistor RFM2, the other end of the resistor RFM1 is connected with one end of a piezoresistor CMS1 through a group of fuses FU1, and the other end of the resistor RFM2 is connected with the other end of the piezoresistor CMS 1; meanwhile, the two ends of the voltage dependent resistor CMS1 are connected to the 1 st pin and the 2 nd pin of the rectifier bridge DB1, the 4 th pin of the rectifier bridge DB1 is grounded, the 3 rd pin is connected with the positive plates of the filter capacitor C9 and the filter capacitor C10, the positive plates are grounded through series resistors R14 and R15, and the negative plates of the filter capacitor C9 and the filter capacitor C10 are grounded; the 3 rd pin of the rectifier bridge DB1 is connected with the 4 th pin of a voltage-reducing constant-current IC chip U4, the 1 st pin of the voltage-reducing constant-current IC chip U4 is connected with the 4 th pin of a voltage-reducing constant-current IC chip U5 through a resistor R41, the 3 rd pin of the voltage-reducing constant-current IC chip U4 is connected with the 4 th pin of the voltage-reducing constant-current IC chip U5 through a resistor R42, the 1 st pin and the 3 rd pin of the voltage-reducing constant-current IC chip U5 output 12V low-voltage direct-current voltage through resistors R44 and R43 respectively, and the 12V low-voltage direct current is connected to; the No. 3 pin of the rectifier bridge DB1 is connected with the anode of the light source plate (4).
4. The high voltage linear dimming circuit of claim 1, wherein: the control IC module (1) comprises a control IC chip U3, a voltage-stabilizing IC chip U2 and a chip U1 for generating sawtooth wave signals, pins 1 and 7 of the control IC chip U3 are grounded, a pin 2 is connected with a 0-10V direct-current voltage processing circuit and inputs a 0-10V direct-current voltage signal, a pin 3 is connected with a chip U1 for inputting sawtooth wave signals, a pin 4 is connected with a base of a switch tube Q1, a collector of the switch tube Q1 is connected with a pin 5 through a resistor R8, the pin 5 is connected with a base of a switch tube Q1 through a resistor R7, the pin 5 is used as a power supply end of the control IC chip U3 and is connected with an output end of the voltage-stabilizing IC chip U2 for voltage stabilization together with the power supply end of the chip U1, pins 9 and 11 are connected with a multi-way switch module (3), the pin 12 is connected with the pin 5 through a resistor R9 and is connected with a collector of the switch tube Q2 through a resistor R11, the emitters of the switching tubes Q1 and Q2 are grounded, the base of the switching tube Q2 is connected with the connecting line of the series resistor R12 and the resistor R13, and the resistor R12 is connected with the collector of the switching tube Q1 through the resistor R10; pins 6, 8, 10, 13-16 of the control IC chip U3 are all suspended.
5. The high voltage linear dimming circuit of claim 4, wherein: the 1 st pin of the voltage-stabilizing IC chip U2 is connected with the 12V low-voltage direct-current voltage input by the power supply module (2), and is grounded through a voltage-stabilizing diode DZ1, a capacitor C2 and a capacitor C3 which are connected in parallel, the anode of the voltage-stabilizing diode DZ1 is grounded, the 2 nd pin of the voltage-stabilizing IC chip U2 is grounded, and is connected with the 3 rd pin through a capacitor C1, and the 3 rd pin of the voltage-stabilizing IC chip U2 is connected with the 5 th pin of the control IC chip U3 and is connected with the chip U1.
6. The high voltage linear dimming circuit of claim 4, wherein: the 1 st pin of the chip U1 is grounded, and is connected with the 2 nd pin through a capacitor C8, the 2 nd pin is connected with the 7 th pin through a diode D4 and a diode D5 which are connected in series, and is connected with the 3 rd pin of the voltage stabilizing IC chip U2 through a resistor R5, the 3 rd pin of the chip U1 is grounded, the 4 th pin of the chip U1 is connected with the 3 rd pin of the voltage stabilizing IC chip U2, the 5 th pin is connected with the 3 rd pin of the voltage stabilizing IC chip U2 through a resistor R6, the 6 th pin is connected with the 3 rd pin of the control IC chip U3, and is connected with the 3 rd pin of the voltage stabilizing IC chip U2 through a resistor R5, and the 8 th pin is connected with the 3 rd pin of the voltage stabilizing IC chip.
7. The high voltage linear dimming circuit of claim 4, wherein: the 0-10V DC voltage processing circuit includes a 0-10V DC power supply DC1, the positive pole of the 0-10V direct current power supply DC1 is connected with the 3 rd pin of the voltage-stabilizing IC chip U2 through a resistor R1, meanwhile, the resistor R4 is grounded, the cathode of the resistor R4 is grounded through a diode D2, the resistor R4 is connected with the capacitor C4 in parallel, the anode of the 0-10V direct current power supply DC1 is connected with the cathode of the diode D1, the anode of the diode D1 is connected with the No. 2 pin of the control IC chip U3, meanwhile, the capacitor C5 and the capacitor C6 which are connected in parallel are grounded, the anode of the diode D1 is also connected with one end of a resistor R3, the other end of the resistor R3 is connected with the 3 rd pin of the voltage stabilizing IC chip U2, one end of a resistor R2 is connected with the 3 rd pin of the voltage stabilizing IC chip U2 and the 4 th pin of the chip U1, the other end is connected with the 3 rd pin of the control IC chip U3, meanwhile, the capacitor C7 and the diode D3 which are connected in parallel are grounded, and the anode of the diode D3 is grounded.
8. The high voltage linear dimming circuit of claim 4, wherein: the multi-way switch module (3) comprises 8 groups of switch channels which are mutually connected in parallel, the first group of switch channels respectively comprises an MOS switch tube M1, the drain electrode of the MOS switch tube M1 is connected with the negative electrode of the light source plate (4), the grid electrode is connected with the 11 th pin of the control IC chip U3 through a resistor R16, the source electrode is connected with the 9 th pin of the control IC chip U3 through a resistor R32, the source electrode and the grid electrode are connected with a resistor R24 indirectly, and the resistor 32 is grounded through a resistor R40; the second group of switch channels respectively comprise MOS switch tubes M2, the drain electrodes of the MOS switch tubes M2 are connected with the negative electrodes of the light source plates (4), the grid electrodes of the MOS switch tubes are connected with the 11 th base pin of the control IC chip U3 through resistors R17, the source electrodes of the MOS switch tubes are grounded through resistors R33, and the source electrodes and the grid electrodes of the MOS switch tubes are indirectly connected with resistors R25; the third group of switch channels respectively comprise MOS switch tubes M3, the drain electrodes of the MOS switch tubes M3 are connected with the negative electrode of the light source plate (4), the grid electrodes of the MOS switch tubes are connected with the 11 th base pin of the control IC chip U3 through a resistor R18, the source electrodes of the MOS switch tubes are grounded through a resistor R34, and the source electrodes and the grid electrodes of the MOS switch tubes are indirectly connected with a resistor R26; the fourth group of switch channels respectively comprise MOS switch tubes M4, the drain electrode of the MOS switch tube M4 is connected with the cathode of a light source plate (4), the grid electrode of the MOS switch tube M4 is connected with the 11 th pin of a control IC chip U3 through a resistor R19, the source electrode of the MOS switch tube M4 is grounded through a resistor R35, and the source electrode and the grid electrode of the MOS switch tube M27 are indirectly connected; the fifth group of switch channels respectively comprise MOS switch tubes M5, the drain electrodes of the MOS switch tubes M5 are connected with the negative electrodes of the light source plates (4), the grid electrodes of the MOS switch tubes are connected with the 11 th base pin of the control IC chip U3 through a resistor R20, the source electrodes of the MOS switch tubes are grounded through a resistor R36, and the source electrodes and the grid electrodes of the MOS switch tubes are indirectly connected with a resistor R28; the sixth group of switch channels respectively comprise MOS switch tubes M6, the drain electrodes of the MOS switch tubes M6 are connected with the negative electrodes of the light source plates (4), the grid electrodes of the MOS switch tubes are connected with the 11 th base pin of the control IC chip U3 through a resistor R21, the source electrodes of the MOS switch tubes are grounded through a resistor R37, and the source electrodes and the grid electrodes of the MOS switch tubes are indirectly connected with a resistor R29; the seventh group of switch channels respectively comprise MOS switch tubes M7, the drain electrodes of the MOS switch tubes M7 are connected with the negative electrodes of the light source plates (4), the grid electrodes of the MOS switch tubes are connected with the 11 th base pin of the control IC chip U3 through a resistor R22, the source electrodes of the MOS switch tubes are grounded through a resistor R38, and the source electrodes and the grid electrodes of the MOS switch tubes are indirectly connected with a resistor R30; the eighth group of switch channels respectively comprise MOS switch tubes M8, the drain electrodes of the MOS switch tubes M8 are connected with the negative electrodes of the light source plates (4), the grid electrodes of the MOS switch tubes are connected with the 11 th base pin of the control IC chip U3 through resistors R23, the source electrodes of the MOS switch tubes are grounded through resistors R39, and the source electrodes and the grid electrodes of the MOS switch tubes are indirectly connected with resistors R31.
9. A high voltage linear dimming circuit as claimed in claim 1, wherein: the light source board (4) comprises light emitting diodes, LEDs 1.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111884565A (en) * | 2020-08-04 | 2020-11-03 | 中国船舶科学研究中心 | High-power driver of deep sea motor |
| CN114071837A (en) * | 2020-08-07 | 2022-02-18 | 全汉企业股份有限公司 | Lighting power supply circuit with dimming function and control method thereof |
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2018
- 2018-10-15 CN CN201821665646.1U patent/CN209897309U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111884565A (en) * | 2020-08-04 | 2020-11-03 | 中国船舶科学研究中心 | High-power driver of deep sea motor |
| CN111884565B (en) * | 2020-08-04 | 2022-04-08 | 中国船舶科学研究中心 | High-power driver of deep sea motor |
| CN114071837A (en) * | 2020-08-07 | 2022-02-18 | 全汉企业股份有限公司 | Lighting power supply circuit with dimming function and control method thereof |
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