CN2410814Y - Zero-adjusting universal DC voltage-stabilizing current-stabilizing switch power supply - Google Patents
Zero-adjusting universal DC voltage-stabilizing current-stabilizing switch power supply Download PDFInfo
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- CN2410814Y CN2410814Y CN 00201425 CN00201425U CN2410814Y CN 2410814 Y CN2410814 Y CN 2410814Y CN 00201425 CN00201425 CN 00201425 CN 00201425 U CN00201425 U CN 00201425U CN 2410814 Y CN2410814 Y CN 2410814Y
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- 230000000087 stabilizing effect Effects 0.000 claims abstract description 39
- 238000006243 chemical reaction Methods 0.000 claims abstract description 38
- 230000006641 stabilisation Effects 0.000 claims description 93
- 238000011105 stabilization Methods 0.000 claims description 93
- 238000001914 filtration Methods 0.000 claims description 28
- 238000005070 sampling Methods 0.000 claims description 17
- 230000003321 amplification Effects 0.000 claims description 9
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 9
- 230000005669 field effect Effects 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
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Abstract
The utility model discloses a DC switching power supply. The utility model comprises a high-frequency conversion unit, a high-frequency transformer unit, a high-frequency rectifying filter unit, a current stabilizing control unit, a voltage stabilizing control unit, a voltage stabilizing and current stabilizing automatic switching unit, a pulse width controller unit and a drive circuit unit. The high-frequency conversion unit is driven by the drive circuit, the output of the high-frequency conversion unit is connected with the high-frequency rectifying filter unit through the high-frequency transformer unit, voltage and current output signals of the switching power supply are respectively connected with the voltage stabilizing control unit and the current stabilizing control unit and then are connected with the input of the pulse width controller unit, and the output of the pulse width controller unit is connected with the drive circuit. The utility model has the advantages of small size, light weight and high efficiency, the utility model can be adjusted from zero, the stabilized voltage and stabilized current can be automatically switched, and the utility model is suitable for various occasions of DC tests and power supplying.
Description
The utility model relates to a kind of dc current regulator power supply.
Existing direct-current switch power supply is big because of ripple, can not can not accomplish current stabilization from zero accent, transfer because of can not zeroly rising, thus can not be program control, be only applicable to power source special, can not be used as multiple power source.
In view of above-mentioned, the purpose of this utility model just provides a kind of zero direct-current switch power supply that accent, voltage stabilization and current stabilization automatically switch.
For reaching this purpose, the utility model by the following technical solutions:
A kind of zero plays the general DC voltage stabilization and current stabilization Switching Power Supply of accent, it is characterized in that it comprises: low frequency rectifying and wave-filtering, accessory power supply, high frequency conversion, high frequency transformer, filtering high-frequency rectifier, current sampling, electric current amplification, current stabilization control, voltage stabilizing control, voltage stabilization and current stabilization automatic switchover, current mode pulse width controller, all unit of drive circuit, wherein:
The low frequency rectification filtering unit provides dc supply to the high frequency conversion unit, the output of high frequency conversion unit connects the filtering high-frequency rectifier unit through high frequency transformer, the current sampling unit strings is connected in the output loop of filtering high-frequency rectifier unit, the output of filtering high-frequency rectifier unit is as the output of Switching Power Supply, the output of current sampling unit connects the current stabilization control unit behind current amplification unit, the output of Switching Power Supply connects the input of voltage stabilizing control unit, the output of current stabilization control unit and voltage stabilizing control unit connects the input of voltage stabilization and current stabilization automatic switch unit, the output of voltage stabilization and current stabilization automatic switch unit connects an input of current mode pulse width controller, another input of current mode pulse width controller connects the output of high frequency conversion unit, the output of current mode pulse width controller connects drive circuit, and the output of drive circuit connects the input of high frequency conversion unit.
Described current stabilization control unit is made of operational amplifier and current stabilization a reference source, and the output of this current stabilization a reference source and described current amplification unit connects the input of this operational amplifier.
Described voltage stabilizing control unit is made of operational amplifier and voltage stabilizing a reference source, and the output of this voltage stabilizing a reference source and DC power supply connects the input of this operational amplifier.
Described voltage stabilization and current stabilization automatic switch unit is made of two light-emitting diodes that connect the output of described current stabilization control and voltage stabilizing control unit respectively, an input of the described current mode pulse width controller of termination in addition of these two light-emitting diodes.
Described drive circuit is the push-pull circuit that is made of field effect transistor, and its two-way input connects two outputs from described current mode pulse width controller, the input that its output is coupled to the high frequency conversion unit through driving transformer.
Described high frequency conversion unit is the bridge circuit that is made of field effect transistor, and its output is coupled to the filtering high-frequency rectifier unit through high frequency transformer.
Described current mode pulse width controller is made of pulse width controller, current sampling transformer, the output of described voltage stabilization and current stabilization automatic switch unit connects an input of this pulse width controller, the elementary winding of this current sampling transformer is connected with the output of described high frequency conversion unit, the output current signal of the high frequency conversion unit of being gathered is through rectifying and wave-filtering, be connected to another input of this pulse width controller, the described drive circuit of output termination of this pulse width controller.
The utility model has the advantages that: owing to adopted unit such as constant current constant voltage control, voltage stabilization and current stabilization automatic switchover, pulse width controller, so output ripple is little, can accomplish voltage stabilization and current stabilization output from zero accent, can be program control, can make multiple power source; Owing to adopt the Switching Power Supply form, and be provided with the fluid drive circuit, so volume is little, in light weight, efficient is high.
Be elaborated below in conjunction with drawings and Examples.
Fig. 1 is a circuit block diagram of the present utility model;
Fig. 2, Fig. 3 are circuit theory diagrams of the present utility model.
The utility model is a kind of zero and transfers general DC voltage stabilization and current stabilization Switching Power Supply, see also Fig. 1, it comprises: low frequency rectifying and wave-filtering 1, accessory power supply 6, high frequency conversion 2, high frequency transformer 3, filtering high-frequency rectifier 4, current sampling 5, electric current amplification 8, current stabilization control 11, voltage stabilizing control 12, voltage stabilization and current stabilization automatic switchover 10, current mode pulse width controller 9, drive circuit 7 all unit.Wherein:
Low frequency rectification filtering unit 1 provides dc supply to high frequency conversion unit 2, the output of high frequency conversion unit 2 connects filtering high-frequency rectifier unit 4 through high frequency transformer 3, current sampling unit 5 is serially connected in the output loop of filtering high-frequency rectifier unit 4, the output of filtering high-frequency rectifier unit 4 is as the output of Local Switch power supply, the output of current sampling unit 5 connects current stabilization control unit 11 after current amplification unit 8 amplifies, the output of Switching Power Supply connects the input of voltage stabilizing control unit 12, the output of current stabilization control unit 11 and voltage stabilizing control unit 12 connects the input of voltage stabilization and current stabilization automatic switch unit 10, the output of voltage stabilization and current stabilization automatic switch unit 10 connects an input of current mode pulse width controller 9, another input of current mode pulse width controller 9 connects the output from high frequency conversion unit 2, the output of current mode pulse width controller 9 connects drive circuit 7, and the output of drive circuit 7 connects the input of high frequency conversion unit 2.
High frequency conversion unit 2 is transformed into high-frequency alternating current with the direct current that low frequency rectification filtering unit 1 provides, and passes to filtering high-frequency rectifier unit 4 through high frequency transformer 3, and the latter becomes high-frequency ac into the output of this machine direct current.After voltage, the electric current of output is sampled, carrying out error by voltage stabilizing control 12, current stabilization control unit 11 respectively amplifies, deliver to pulse width controller 9 through voltage stabilization and current stabilization automatic switch unit 10 again, pulse width controller 9 is according to the output current of voltage stabilizing and current stabilization error, high frequency conversion unit 2, to drive circuit 7 output control signals, control high frequency conversion unit 2 through drive circuit 7, thereby stablize the output voltage electric current of Local Switch power supply.
Below in conjunction with Fig. 2, Fig. 3 operation principle of the present utility model is described.
The accessory power supply unit is made up of auxiliary supply transformer T1 rectifier bridge V1-V2, three terminal regulator N1-N3, electrochemical capacitor C1-C6, resistance R 1, voltage stabilizing didoe V4, the accessory power supply unit provide this machine needed+5V ,+15V, ,-5V ,-the 12V accessory power supply.The low frequency rectification filtering unit is made up of rectifier bridge V3, capacitor C 7, provides+the VSS power supply to the high frequency conversion unit.
Drive circuit is made up of field effect transistor V9-V14, resistance R 24-R26, driving transformer T3.The high frequency conversion unit is the bridge circuit that is made of field effect transistor V15-V18, resistance R 28-R31, and its output is finished high frequency conversion by high frequency transformer T4.The input of high frequency conversion 2 is coupled in the output of drive circuit through driving transformer T3.
The filtering high-frequency rectifier unit is made up of rectifier diode V19-V20, inductance L 1, capacitor C 13,
The resistance R 32 that is connected in its output loop is the current sampling unit, and the output of filtering high-frequency rectifier unit is as the output of Local Switch power supply.
The voltage stabilizing control unit is made of resistance R 2-R4, capacitor C 8, operational amplifier N4:A and voltage stabilizing a reference source R5, and the output of voltage stabilizing a reference source and Local Switch power supply connects the input of operational amplifier N4:A.The output voltage of Local Switch power supply compares by sample circuit and voltage stabilizing benchmark, carrying out error by operational amplifier N4:A amplifies, again the light-emitting diode V5 by the voltage stabilization and current stabilization automatic switch unit, through current mode pulse width controller effect pipe N5 control high frequency conversion circuit, stablize the output voltage of Local Switch power supply.
Current amplification unit is made up of operational amplifier N4:C, and its input connects from current sampling unit R 32.The current stabilization control unit is made of resistance R 7-R10, capacitor C 9, operational amplifier N4:B and current stabilization a reference source R8.The output of current stabilization a reference source and operational amplifier N4:C connects the input of operational amplifier N4:B.The output current of Local Switch power supply is done the I/V conversion by current sampling resistor R32, after amplifying, compares operational amplifier N4:C with the current stabilization benchmark, carrying out error by operational amplifier N4:B amplifies, by the light-emitting diode V6 of voltage stabilization and current stabilization automatic switch unit, through current mode pulse width controller N5 control high frequency conversion circuit, stablize the output current of Local Switch power supply.
The voltage stabilization and current stabilization automatic switch unit is made of resistance R 6, two light-emitting diode V5 and V6, the negative electrode of V5 and V6 connects the output of operational amplifier N4:B in the output of operational amplifier N4:A in the voltage stabilizing control unit and the current stabilization control unit respectively, and the anode of V5 and V6 connects the input of current mode pulse width controller N5.Under the voltage stabilizing state, the V5 conducting, V6 conducting under the current stabilization state, voltage stabilizing, current stabilization state are finished automatic switchover by operational amplifier N4:A and N4:B control by V5 and V6.
The current mode pulse width controller is that pulse width controller N5, resistance R 14-R23, capacitor C 10-C12, diode V7-V8, the current sampling transformer T2 of UC3846 constitutes by model.Voltage stabilizing and current stabilization error signal connect 6, the 7 pin inputs of N5, the elementary winding of T2 and the elementary windings in series of high frequency transformer T4, gathering the output current signal of bridge-type converter unit, behind V7, the V8 of this signal through being connected on the T2 secondary winding, the C12 rectifying and wave-filtering, be connected to 3,4 input pins of N5.Pulse width controller N5 is according to the output current of voltage stabilizing and current stabilization error, high frequency conversion unit, through drive circuit control high frequency conversion unit, stablizes the output voltage electric current of Local Switch power supply to drive circuit output control pulse signal by 14 output pins 11.
Be equipped with on the panel of the present utility model: the current digital table M2 of mains switch K1, the adjusting knob R5 that adjusts output voltage, the voltage digital table M1 that adjusts output current regulating button R8, voltage stabilizing relay indicating light V5, current stabilization relay indicating light V6, indication output voltage, indication output current, lead-out terminal etc.R5, R8, V5, V6 also are voltage stabilizing a reference source resistance, current stabilization a reference source resistance, the light-emitting diodes of mentioning in the foregoing circuit.
The utility model both can have been made source of stable pressure also can do the constant-current source use, and output is adjustable continuously from zero.When using as source of stable pressure, the output current adjusting knob can be set maximum output current, plays the current protection effect; When using as constant-current source, the output voltage adjusting knob can be set maximum open circuit voltage, plays the voltage protection effect.Under the voltage stabilizing state, when output current reaches preset point, can be automatically converted to the current stabilization state; Otherwise, can get back to the voltage stabilizing state by the current stabilization state exchange automatically when output current during less than preset point.
The utility model volume is little, in light weight, efficient is high, is the direct-current switch power supply of 600-1000W for power output, and its external dimensions is 216 * 110 * 420mm only, and weight is 7.5Kg only, is convenient to upper bracket and uses.Can be widely used in DC test and power supply occasion.
Claims (7)
1. one kind zero is played the general DC voltage stabilization and current stabilization Switching Power Supply of accent, it is characterized in that it comprises: low frequency rectifying and wave-filtering, accessory power supply, high frequency conversion, high frequency transformer, filtering high-frequency rectifier, current sampling, electric current amplification, current stabilization control, voltage stabilizing control, voltage stabilization and current stabilization automatic switchover, current mode pulse width controller, all unit of drive circuit, wherein:
The low frequency rectification filtering unit provides dc supply to the high frequency conversion unit, the output of high frequency conversion unit connects the filtering high-frequency rectifier unit through high frequency transformer, the current sampling unit strings is connected in the output loop of filtering high-frequency rectifier unit, the output of filtering high-frequency rectifier unit is as the output of Switching Power Supply, the output of current sampling unit connects the current stabilization control unit behind current amplification unit, the output of Switching Power Supply connects the input of voltage stabilizing control unit, the output of current stabilization control unit and voltage stabilizing control unit connects the input of voltage stabilization and current stabilization automatic switch unit, the output of voltage stabilization and current stabilization automatic switch unit connects an input of current mode pulse width controller, another input of current mode pulse width controller connects the output of high frequency conversion unit, the output of current mode pulse width controller connects drive circuit, and the output of drive circuit connects the input of high frequency conversion unit.
2. as claimed in claim 1 zero plays the general DC voltage stabilization and current stabilization Switching Power Supply of accent, it is characterized in that: described current stabilization control unit is made of operational amplifier and current stabilization a reference source, and the output of this current stabilization a reference source and described current amplification unit connects the input of this operational amplifier.
3. as claimed in claim 1 zero plays the general DC voltage stabilization and current stabilization Switching Power Supply of accent, and it is characterized in that: described voltage stabilizing control unit is made of operational amplifier and voltage stabilizing a reference source, and the output of this voltage stabilizing a reference source and DC power supply connects the input of this operational amplifier.
4. as claimed in claim 1 zero plays the general DC voltage stabilization and current stabilization Switching Power Supply of accent, it is characterized in that: described voltage stabilization and current stabilization automatic switch unit is made of two light-emitting diodes that connect the output of described current stabilization control and voltage stabilizing control unit respectively, an input of the described current mode pulse width controller of termination in addition of these two light-emitting diodes.
5. as claimed in claim 1 zero plays the general DC voltage stabilization and current stabilization Switching Power Supply of accent, it is characterized in that: described drive circuit is the push-pull circuit that is made of field effect transistor, its two-way input connects two outputs from described current mode pulse width controller, the input that its output is coupled to the high frequency conversion unit through driving transformer.
6. as claimed in claim 1 zero plays the general DC voltage stabilization and current stabilization Switching Power Supply of accent, and it is characterized in that: described high frequency conversion unit is the bridge circuit that is made of field effect transistor, and its output is coupled to the filtering high-frequency rectifier unit through high frequency transformer.
7. as claimed in claim 1 zero plays the general DC voltage stabilization and current stabilization Switching Power Supply of accent, it is characterized in that: described current mode pulse width controller is made of pulse width controller, current sampling transformer, the output of described voltage stabilization and current stabilization automatic switch unit connects an input of this pulse width controller, the elementary winding of this current sampling transformer is connected with the output of described high frequency conversion unit, the output current signal of the high frequency conversion unit of being gathered is through rectifying and wave-filtering, be connected to another input of this pulse width controller, the described drive circuit of output termination of this pulse width controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00201425 CN2410814Y (en) | 2000-02-01 | 2000-02-01 | Zero-adjusting universal DC voltage-stabilizing current-stabilizing switch power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00201425 CN2410814Y (en) | 2000-02-01 | 2000-02-01 | Zero-adjusting universal DC voltage-stabilizing current-stabilizing switch power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2410814Y true CN2410814Y (en) | 2000-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00201425 Expired - Lifetime CN2410814Y (en) | 2000-02-01 | 2000-02-01 | Zero-adjusting universal DC voltage-stabilizing current-stabilizing switch power supply |
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| CN (1) | CN2410814Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279333A (en) * | 2011-08-01 | 2011-12-14 | 浙江方圆电气设备检测有限公司 | DC constant current testing device for low-voltage electrical apparatus |
| CN103280983A (en) * | 2013-05-03 | 2013-09-04 | 中国石油天然气集团公司 | Power source system of cable formation tester for oil well logging |
| CN105652934A (en) * | 2014-11-11 | 2016-06-08 | 江苏绿扬电子仪器集团有限公司 | System improving precision of program control dc source |
-
2000
- 2000-02-01 CN CN 00201425 patent/CN2410814Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279333A (en) * | 2011-08-01 | 2011-12-14 | 浙江方圆电气设备检测有限公司 | DC constant current testing device for low-voltage electrical apparatus |
| CN103280983A (en) * | 2013-05-03 | 2013-09-04 | 中国石油天然气集团公司 | Power source system of cable formation tester for oil well logging |
| CN105652934A (en) * | 2014-11-11 | 2016-06-08 | 江苏绿扬电子仪器集团有限公司 | System improving precision of program control dc source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE; FROM: BEIJING TONGYE INSTITUTE OF ELECTRONIC TECHNOLOGY TO: BEIJING QIEKESI ELECTRONICAL TECHNOLOGY CO.,LTD. |
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| CP03 | Change of name, title or address |
Address after: 102 room 15, building 100083, Haidian District, Beijing, Xueyuan Road Patentee after: Beijing Qiekesi Electronic Technology Ltd. Address before: No. 26 South Street, Guang'an, Beijing, Xuanwu District Patentee before: Beijing Tong Ye Electronic Technology Research Institute |
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| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Patentee address after: 100085 Beijing city Haidian District East Road No. 1 Yingchuang power E606A Patentee address before: 100083 room 15, Building 102, Haidian District, Beijing, Xueyuan Road |
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| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20001213 |