CN205792500U - A kind of inductive load voltage PWM magnetic release circuit - Google Patents
A kind of inductive load voltage PWM magnetic release circuit Download PDFInfo
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- CN205792500U CN205792500U CN201620697056.1U CN201620697056U CN205792500U CN 205792500 U CN205792500 U CN 205792500U CN 201620697056 U CN201620697056 U CN 201620697056U CN 205792500 U CN205792500 U CN 205792500U
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Abstract
The utility model discloses a kind of inductive load voltage PWM magnetic release circuit.Including input protection rectification circuit and degaussing main circuit.Degaussing main circuit, pulse width modulation controlled NMOS tube M1, load L1, sustained diode 6, degaussing Zener diode D8 or resistance R3, Bootstrap electric capacity C1, Bootstrap booster diode D7, Bootstrap capacitor charge and discharge circuit controls diode D10 (removable), divider resistance R1, divider resistance R2, pulse width modulated stage conducting NMOS tube M2 (or audion), anti-NMOS tube puncture Zener diode D9 (removable) composition.This utility model Circuit responce speed is fast, can meet existing voltage PWM and carry out the response speed of control inductive load；Circuit is simple, and circuit cost is low, applied widely, is applicable to various voltage PWM and carrys out the circuit of control inductive load.
Description
Technical field
This utility model relates to a kind of voltage PWM magnetic release circuit, especially relates to a kind of inductive load voltage
Pulsewidth modulation magnetic release circuit.
Background technology
Along with the fast development of electronic technology, voltage PWM technology due to its need to change dutycycle can complete right
The Linear Control of controlled device, gets more and more and is applied to every field.The wider voltage pulse width that is through wherein is applied to adjust
Technical controlling metal-oxide-semiconductor processed switchs, and utilizes fly-wheel diode simultaneously, inductive load carries out current constant control, but cuts off sense every time
Property load time, the reason can not suddenlyd change due to electric current in the existence of fly-wheel diode and inductive load, it is impossible to discharge rapidly perception
The energy accumulated in load, thus causing cutting off slack-off, traditional solution is by a Zener diode and afterflow two
Pole pipe series connection, realizes afterflow as an afterflow entirety, or a resistance and fly-wheel diode is connected, continue as one
Stream entirety realizes afterflow, but owing to voltage PWM needs speed-sensitive switch metal-oxide-semiconductor to control electric current, therefore can cause
State the overall frequently break-make of afterflow, thus cause Zener diode frequently to puncture and flow through ohmically electric current relatively greatly, ultimately result in
Zener diode or ohmically power consumption are very big, and therefore traditional method can not well solve the problems referred to above, and this is accomplished by one
Circuit is when voltage PWM speed-sensitive switch metal-oxide-semiconductor control inductive loads, and Zener diode (or resistance) does not works, and when cutting
During disconnected inductive load, Zener diode (or resistance) works, and so can reduce the power consumption of diode (or resistance).
Utility model content
For realizing when voltage PWM speed-sensitive switch metal-oxide-semiconductor control inductive loads, Zener diode (or resistance) is no
Work, and when cutting off inductive load, Zener diode (or resistance) works, simultaneously because after cutting off inductive load, above it
The decrease speed of electric current be directly proportional with backward voltage, if using resistance, then flowing through ohmically voltage can be more and more less, thus
Electric current decrease speed can be increasingly slower, but also can discharge magnetic；If use Zener diode, then on Zener diode, voltage is basic
Fixing, therefore electric current decrease speed substantially constant.Therefore, the purpose of this utility model is to provide a kind of inductive load voltage arteries and veins
Wide modulation magnetic release circuit.During the load of voltage PWM speed-sensitive switch metal-oxide-semiconductor control inductive, Zener diode or resistance are not
Work, and when cutting off inductive load, Zener diode or resistance performance.
The technical solution adopted in the utility model is:
Scheme one: a kind of inductive load voltage PWM magnetic release circuit:
This utility model includes input protection rectification circuit and degaussing main circuit；Input protection rectification circuit, including rectification
Four diode D2～D5 and two-way TVS pipe or bi-directional voltage stabilizing diode D1；Degaussing main circuit, including NMOS tube M1～M2, negative
Carry L1, Zener diode D8～D9, two diode D6～D7, electric capacity C1 and three resistance R1～R3；One end of load L1 is divided
Do not meet positive pole or one end of resistance R3, the source electrode of NMOS tube M2, one end of resistance R1, the Zener diode D9 of Zener diode D8
Positive pole and the positive pole of diode D7 be followed by the other end of VCC, load L1 and connect the positive pole of diode D6, one end of electric capacity C1 respectively
With the drain electrode of NMOS tube M1, the source electrode of NMOS tube M1 meets GND, and the grid of NMOS tube M1 is input protection rectification circuit input end,
The other end of electric capacity C1 connects negative pole and one end of resistance R2 of diode D7 respectively, another of the other end of resistance R1 and resistance R2
End junction point meets grid and the negative pole of Zener diode D9 of NMOS tube M2, the negative pole of diode D6 and Zener diode D8 respectively
Negative pole junction point, or the junction point of the other end of the negative pole of diode D6 and resistance R3, connect the drain electrode of NMOS tube M2.
Described degaussing main circuit, also includes Zener diode D10, and the other end of electric capacity C1 is through Zener diode D10 and electricity
One end of resistance R2 connects.
Scheme two: a kind of inductive load voltage PWM magnetic release circuit:
This utility model includes input protection rectification circuit and degaussing main circuit；Input protection rectification circuit, including rectification
Four diode D2～D5 and two-way TVS pipe or bi-directional voltage stabilizing diode D1；Degaussing main circuit, including NMOS tube M1～M2, negative
Carry L1, Zener diode D8, two diode D6～D7, electric capacity C1 and three resistance R1～R3；One end of load L1 connects respectively
The positive pole of Zener diode D8 or one end of resistance R3, the source electrode of NMOS tube M2, one end of resistance R1 and the positive pole of diode D7
The other end being followed by VCC, load L1 meets the positive pole of diode D6, one end of electric capacity C1 and the drain electrode of NMOS tube M1, NMOS respectively
The source electrode of pipe M1 meets GND, and the grid of NMOS tube M1 is input protection rectification circuit input end, and the other end of electric capacity C1 connects two respectively
The negative pole of pole pipe D7 and one end of resistance R2, the other end of resistance R1 and the other end junction point of resistance R2 connect deleting of NMOS tube M2
The other end of pole, the negative pole of diode D6 and Zener diode D8 negative pole junction point, or the negative pole of diode D6 and resistance R3
Junction point, connects the drain electrode of NMOS tube M2.
Described degaussing main circuit, also includes Zener diode D10, and the other end of electric capacity C1 is through Zener diode D10 and electricity
One end of resistance R2 connects.
Scheme three: a kind of inductive load voltage PWM magnetic release circuit:
This utility model includes input protection rectification circuit and degaussing main circuit；Input protection rectification circuit, including rectification
Four diode D2～D5 and two-way TVS pipe or bi-directional voltage stabilizing diode D1；Degaussing main circuit, including NMOS tube M1, audion
Q1, loads L1, Zener diode D8, two diode D6～D7, electric capacity C1 and two resistance R1～R3；One end of load L1 is divided
Do not meet positive pole or one end of resistance R3, the emitter stage of audion Q1, one end of resistance R1 and the diode D7 of Zener diode D8
Positive pole be followed by VCC, the other end of load L1 connects the positive pole of diode D6, one end of electric capacity C1 and the leakage of NMOS tube M1 respectively
Pole, the source electrode of NMOS tube M1 meets GND, and the grid of NMOS tube M1 is input protection rectification circuit input end, the other end of electric capacity C1
Connect negative pole and one end of resistance R2 of diode D7, the other end of resistance R1 and the other end junction point of resistance R2 respectively and connect three poles
The base stage of pipe Q1, the negative pole of diode D6 and Zener diode D8 negative pole junction point, or the negative pole of diode D6 are with resistance R3's
The junction point of the other end, connects the drain electrode of NMOS tube M2.
Described degaussing main circuit, also includes diode D10, and the other end of electric capacity C1 is through Zener diode D10 and resistance R2
One end connect.
In three of the above scheme, the input signal of described input protection rectification circuit is direct current signal or AC signal, directly
The magnitude of voltage of stream signal is 2～1000V；The voltage of AC signal is effectively 2～1000V, and frequency is 50Hz or 60Hz；Described
Magnetic release main circuit control input signal be a voltage magnitude be 15V, frequency be the square-wave signal of 100-40000Hz.
This utility model has the beneficial effect that
This utility model Circuit responce speed is fast, can meet existing voltage PWM and carry out the sound of control inductive load
Answer speed；Circuit is simple, and circuit cost is low, the most several yuan；Applied widely, it is applicable to various voltage PWM
The circuit of control inductive load；Low in energy consumption, compared to the mode the most in parallel with Zener diode with fly-wheel diode, power consumption saves
Save 30%-99%；Magnetic release is fast, and release time is that tradition is directly with the mode inductive load release time of fly-wheel diode afterflow
5%-20%.
Accompanying drawing explanation
Fig. 1 is inductive load voltage PWM magnetic release circuit.
Fig. 2 is that inductive load voltage PWM magnetic release circuit (removes magnetic release main circuit Bootstrap electric capacity
Charging and discharging circuit controls diode).
Fig. 3 is that inductive load voltage PWM magnetic release circuit (is removed the magnetic release anti-NMOS tube of main circuit to puncture
Zener diode).
Fig. 4 is that inductive load voltage PWM magnetic release circuit (is removed the magnetic release anti-NMOS tube of main circuit to puncture
Zener diode and Bootstrap capacitor charge and discharge circuit controls diode).
Fig. 5 is that inductive load voltage PWM magnetic release circuit (substitutes pulse width modulated stage conducting with audion
NMOS tube, removes anti-NMOS tube and punctures Zener diode).
Fig. 6 is that inductive load voltage PWM magnetic release circuit (substitutes pulse width modulated stage conducting with audion
NMOS tube, removes anti-NMOS tube and punctures Zener diode, remove Bootstrap capacitor charge and discharge circuit controls diode).
Fig. 7 is that inductive load voltage PWM magnetic release circuit (is replaced magnetic with magnetic release resistance and discharged two poles
Pipe).
Fig. 8 is that inductive load voltage PWM magnetic release circuit (is replaced magnetic with magnetic release resistance and discharged two poles
Pipe, removes magnetic release main circuit Bootstrap capacitor charge and discharge circuit controls diode).
Fig. 9 is that inductive load voltage PWM magnetic release circuit (is replaced magnetic with magnetic release resistance and discharged two poles
Pipe, removes the magnetic release anti-NMOS tube of main circuit and punctures Zener diode).
Figure 10 is that inductive load voltage PWM magnetic release circuit (is replaced magnetic with magnetic release resistance and discharged two poles
Pipe, removes the magnetic release anti-NMOS tube of main circuit and punctures Zener diode and Bootstrap capacitor charge and discharge circuit controls two pole
Pipe).
Figure 11 is that inductive load voltage PWM magnetic release circuit (is replaced magnetic with magnetic release resistance and discharged two poles
Pipe, substitutes pulse width modulated stage conducting NMOS tube with audion, removes anti-NMOS tube and puncture Zener diode).
Figure 12 is that inductive load voltage PWM magnetic release circuit (is replaced magnetic with magnetic release resistance and discharged two poles
Pipe, substitutes pulse width modulated stage conducting NMOS tube with audion, removes anti-NMOS tube and puncture Zener diode, remove Bootstrap
Capacitor charge and discharge circuit controls diode).
Figure 13 is inductive load voltage PWM magnetic release circuit typical case's application drawing.
Figure 14 is input protection rectification circuit.
Figure 15 is that magnetic discharges main circuit.
Detailed description of the invention
With embodiment, this utility model is further described below in conjunction with the accompanying drawings.
As shown in Figure 2 and Figure 8, this utility model includes input protection rectification circuit and degaussing main circuit；Input protection is whole
Current circuit, including four diode D2～D5 of rectification and two-way TVS pipe or bi-directional voltage stabilizing diode D1；Degaussing main circuit, including
NMOS tube M1～M2, load L1, Zener diode D8～D9, two diode D6～D7, electric capacity C1 and three resistance R1～R3；
One end of load L1 connect respectively the positive pole of Zener diode D8 or one end of resistance R3, the source electrode of NMOS tube M2, the one of resistance R1
The positive pole of end, the positive pole of Zener diode D9 and diode D7 is followed by VCC, and the other end of load L1 is just meeting diode D6 respectively
Pole, one end of electric capacity C1 and the drain electrode of NMOS tube M1, the source electrode of NMOS tube M1 meets GND, and the grid of NMOS tube M1 is input protection
Rectification circuit input end, the other end of electric capacity C1 connects negative pole and one end of resistance R2 of diode D7 respectively, another of resistance R1
The other end junction point of end and resistance R2 connects grid and the negative pole of Zener diode D9 of NMOS tube M2 respectively, and diode D6's is negative
Pole and Zener diode D8 negative pole junction point, or the junction point of the other end of the negative pole of diode D6 and resistance R3, connect NMOS tube
The drain electrode of M2.
As shown in Figure 1 and Figure 7, described degaussing main circuit, also include that the other end of Zener diode D10, electric capacity C1 is through steady
One end of pressure diode D10 and resistance R2 connects.
As shown in Fig. 4 and Figure 10, this utility model includes input protection rectification circuit and degaussing main circuit；Input protection is whole
Current circuit, including four diode D2～D5 of rectification and two-way TVS pipe or bi-directional voltage stabilizing diode D1；Degaussing main circuit, including
NMOS tube M1～M2, load L1, Zener diode D8, two diode D6～D7, electric capacity C1 and three resistance R1～R3；Load
One end of L1 connect respectively the positive pole of Zener diode D8 or one end of resistance R3, the source electrode of NMOS tube M2, one end of resistance R1 and
The positive pole of diode D7 is followed by the other end of VCC, load L1 and connects the positive pole of diode D6, one end of electric capacity C1 and NMOS tube respectively
The drain electrode of M1, the source electrode of NMOS tube M1 meets GND, and the grid of NMOS tube M1 is input protection rectification circuit input end, electric capacity C1's
The other end connects negative pole and one end of resistance R2 of diode D7, the other end of resistance R1 and the other end junction point of resistance R2 respectively
Connect the grid of NMOS tube M2, the negative pole of diode D6 and Zener diode D8 negative pole junction point, or the negative pole of diode D6 is with electric
The junction point of the other end of resistance R3, connects the drain electrode of NMOS tube M2.
As shown in Figure 3 and Figure 9, described degaussing main circuit, also include that the other end of Zener diode D10, electric capacity C1 is through steady
One end of pressure diode D10 and resistance R2 connects.
As shown in Fig. 6 and Figure 12, this utility model includes input protection rectification circuit and degaussing main circuit；Input protection is whole
Current circuit, including four diode D2～D5 of rectification and two-way TVS pipe or bi-directional voltage stabilizing diode D1；Degaussing main circuit, including
NMOS tube M1, audion Q1, load L1, Zener diode D8, two diode D6～D7, electric capacity C1 and two resistance R1～
R3；One end of load L1 meets positive pole or one end of resistance R3, the emitter stage of audion Q1, the resistance R1 of Zener diode D8 respectively
One end and the positive pole of diode D7 be followed by the other end of VCC, load L1 and connect the positive pole of diode D6, one end of electric capacity C1 respectively
With the drain electrode of NMOS tube M1, the source electrode of NMOS tube M1 meets GND, and the grid of NMOS tube M1 is input protection rectification circuit input end,
The other end of electric capacity C1 connects negative pole and one end of resistance R2 of diode D7 respectively, another of the other end of resistance R1 and resistance R2
End junction point connects the base stage of audion Q1, the negative pole of diode D6 and Zener diode D8 negative pole junction point, or diode D6's
Negative pole and the junction point of the other end of resistance R3, connect the drain electrode of NMOS tube M2.
As shown in Fig. 5 and Figure 11, described degaussing main circuit, also include diode D10, the other end of electric capacity C1 is through voltage stabilizing two
One end of pole pipe D10 and resistance R2 connects.
In three of the above scheme, the input signal of described input protection rectification circuit is direct current signal or AC signal, directly
The magnitude of voltage of stream signal is 2～1000V；The voltage of AC signal is effectively 2～1000V, and frequency is 50Hz or 60Hz；Described
Magnetic release main circuit control input signal be a voltage magnitude be 15V, frequency be the square-wave signal of 100-40000Hz.
With reference to shown in Fig. 1 ~ Figure 15, a kind of inductive load voltage PWM magnetic release circuit, integrated circuit such as Fig. 1 institute
Show, shown in Fig. 2, be the inductive load voltage removing magnetic release main circuit Bootstrap capacitor charge and discharge circuit controls diode
Pulsewidth modulation magnetic release circuit, shown in Fig. 3, is to remove the magnetic release anti-NMOS tube of main circuit to puncture the perception of Zener diode
Load voltage pulsewidth modulation magnetic release circuit, shown in Fig. 4, is to remove the magnetic release anti-NMOS tube of main circuit to puncture voltage stabilizing two pole
Pipe and the inductive load voltage PWM magnetic release circuit of Bootstrap capacitor charge and discharge circuit controls diode, Fig. 5 institute
Show, be to substitute pulse width modulated stage conducting NMOS tube with audion, remove anti-NMOS tube and puncture the inductive load of Zener diode
Voltage PWM magnetic release circuit, shown in Fig. 6, is to substitute pulse width modulated stage conducting NMOS tube with audion and remove anti-
NMOS tube punctures Zener diode, and the inductive load voltage pulse width removing Bootstrap capacitor charge and discharge circuit controls diode is adjusted
Magnetic release circuit processed, shown in Fig. 7, is the inductive load voltage pulse width tune replacing magnetic release diode with magnetic release resistance
Magnetic release circuit processed, shown in Fig. 8, is to replace magnetic release diode with magnetic release resistance, removes magnetic release main circuit
The inductive load voltage PWM magnetic release circuit of Bootstrap capacitor charge and discharge circuit controls diode, shown in Fig. 9, be
Replace magnetic release diode with magnetic release resistance, remove the magnetic release anti-NMOS tube of main circuit and puncture the sense of Zener diode
Property load voltage pulsewidth modulation magnetic release circuit, shown in Figure 10, be with magnetic release resistance replace magnetic release diode, go
Except the magnetic release anti-NMOS tube of main circuit punctures Zener diode and the sense of Bootstrap capacitor charge and discharge circuit controls diode
Property load voltage pulsewidth modulation magnetic release circuit, shown in Figure 11, be with magnetic release resistance replace magnetic release diode, use
Audion substitutes pulse width modulated stage conducting NMOS tube, removes anti-NMOS tube and punctures the inductive load voltage pulse width of Zener diode
Modulation magnetic release circuit, shown in Figure 12, is to replace magnetic release diode with magnetic release resistance, substitutes pulsewidth with audion
Stage of modulating conducting NMOS tube, removes anti-NMOS tube and punctures Zener diode, remove Bootstrap capacitor charge and discharge circuit controls
The inductive load voltage PWM magnetic release circuit of diode, shown in Figure 13, is inductive load voltage PWM magnetic
Release circuit typical case's application drawing.Described inductive load voltage PWM magnetic release circuit includes that input protection shown in Figure 14 is whole
The release main circuit of magnetic shown in current circuit and Figure 15.
Further, described input protection rectification circuit is managed by D1(TVS or bi-directional voltage stabilizing diode), D2, D3, D4, D5
(commutation diode) forms.Described magnetic release main circuit is by M1 (pulse width modulation controlled NMOS tube), L1 (load), D6 (afterflow
Diode), D8 (magnetic release Zener diode) or R3 (magnetic release resistance), C1 (Bootstrap electric capacity), D7 (Bootstrap
Booster diode), D10 (Bootstrap capacitor charge and discharge circuit controls diode (removable)), R1 (divider resistance), R2 (point
Piezoresistance), M2 (pulse width modulated stage conducting NMOS tube (available audion substitute)), (anti-NMOS tube punctures Zener diode to D9
(removable)) composition.
Further, in conjunction with the work of Figure 13 typical application circuit explanation inductive load voltage PWM magnetic release circuit
Make mode.Inputting frequency 50Hz between Vin+ and Vin-in fig. 13, voltage effective value is that the alternating voltage of 220V swashs
Encouraging, pumping signal changes into, through input protection rectification circuit, the full-wave direct current signal (voltage that voltage effective value is 220V
Direct current biasing component is zero), driving main circuit Input end one square-wave signal of input, (voltage magnitude is 15V, frequency simultaneously
Square-wave signal for 2000Hz).When circuit just powers on, when square-wave signal level is high, pulse width modulation controlled NMOS tube turns on,
Loading to obtain electric work, full-wave direct current signal is filled to Bootstrap electric capacity by Bootstrap booster diode and divider resistance simultaneously
Electricity, now Bootstrap electric capacity both end voltage is less than or equal to load both end voltage, i.e. two divider resistance two ends no-voltages differences or
Person's pressure reduction is negative value, then pulse width modulated stage conducting NMOS tube does not works；When square-wave signal level is low, pulse width modulation controlled
NMOS tube is closed, and load both end voltage is equal, and now Bootstrap electric capacity both end voltage can not be suddenlyd change, and therefore Bootstrap is auxiliary
Helping diode to end, Bootstrap electric capacity passes through divider resistance and load discharge simultaneously, and the discharge time of electric capacity is more than square wave
Low level time, then be between low period at square-wave signal, divider resistance two ends produce pressure reduction, and therefore pulse width modulated stage is led
Logical NMOS tube grid voltage, higher than source voltage, pulse width modulated stage conducting NMOS tube conducting, magnetic will discharge voltage stabilizing two pole
Pipe or magnetic release resistive short, now magnetic release Zener diode or magnetic release resistance do not work, simultaneously as load
For inductive load, therefore closing when pulse width modulation controlled NMOS, the electric current in load can not suddenly change, and load is by afterflow two pole
The pulse width modulated stage conducting NMOS tube afterflow of pipe and conducting；And when square-wave signal level is high again, pulse width modulation controlled
NMOS tube turns on, and full-wave direct current signal is to load charging, and full-wave direct current signal by Bootstrap booster diode and divides simultaneously
Piezoresistance charges to Bootstrap electric capacity, and now Bootstrap electric capacity both end voltage is less than or equal to loading both end voltage, i.e. two
Divider resistance two ends no-voltage difference or pressure reduction are negative value, then pulse width modulated stage conducting NMOS tube does not works, and circuit is the most past
Work of returning to work can complete the current constant control to inductive load, avoid again simultaneously pulse width modulated stage magnetic release Zener diode or
Magnetic discharges resistance performance and produces bigger power consumption, and when needs cut off inductive load, square-wave signal is low, now boots
Boost capacitor discharges electric charge by divider resistance, when divider resistance both end voltage is minimum less than pulse width modulated stage conducting NMOS tube
During conducting voltage, pulse width modulated stage conducting NMOS tube is closed, then magnetic release Zener diode or magnetic release resistance performance,
Inductive load is by fly-wheel diode and magnetic release Zener diode or magnetic release resistance release magnetic.
Above-mentioned detailed description of the invention is used for illustrating this utility model rather than limiting this utility model,
In spirit of the present utility model and scope of the claims, any modifications and changes that this utility model is made, all fall
Enter protection domain of the present utility model.
Claims (9)
1. an inductive load voltage PWM magnetic release circuit, it is characterised in that: include input protection rectification circuit and
Degaussing main circuit；Input protection rectification circuit, including four diode D2～D5 of rectification and two-way TVS pipe or bi-directional voltage stabilizing two
Pole pipe D1；Degaussing main circuit, including NMOS tube M1～M2, loads L1, Zener diode D8～D9, two diode D6～D7,
Electric capacity C1 and three resistance R1～R3；One end of load L1 connect respectively the positive pole of Zener diode D8 or one end of resistance R3,
The positive pole of the source electrode of NMOS tube M2, one end of resistance R1, the positive pole of Zener diode D9 and diode D7 is followed by VCC, loads L1
The other end connect the positive pole of diode D6 respectively, one end of electric capacity C1 and the drain electrode of NMOS tube M1, the source electrode of NMOS tube M1 connects
GND, the grid of NMOS tube M1 is input protection rectification circuit input end, and the other end of electric capacity C1 connects the negative pole of diode D7 respectively
With grid and the voltage stabilizing that one end of resistance R2, the other end of resistance R1 and the other end junction point of resistance R2 connect NMOS tube M2 respectively
The negative pole of diode D9, the negative pole of diode D6 and Zener diode D8 negative pole junction point, or the negative pole of diode D6 and resistance
The junction point of the other end of R3, connects the drain electrode of NMOS tube M2.
A kind of inductive load voltage PWM magnetic release circuit the most according to claim 1, it is characterised in that: described
Degaussing main circuit, also includes Zener diode D10, and the other end of electric capacity C1 connects through one end of Zener diode D10 and resistance R2
Connect.
A kind of inductive load voltage PWM magnetic release circuit the most according to claim 1 and 2, it is characterised in that:
Described input protection rectification circuit input signal be direct current signal or AC signal, the magnitude of voltage of direct current signal be 2～
1000V；The voltage of AC signal is effectively 2～1000V, and frequency is 50Hz or 60Hz；The control of described magnetic release main circuit
Input signal processed be a voltage magnitude be 15V, frequency be the square-wave signal of 100-40000Hz.
4. an inductive load voltage PWM magnetic release circuit, it is characterised in that: include input protection rectification circuit and
Degaussing main circuit；Input protection rectification circuit, including four diode D2～D5 of rectification and two-way TVS pipe or bi-directional voltage stabilizing two
Pole pipe D1；Degaussing main circuit, including NMOS tube M1～M2, loads L1, Zener diode D8, two diode D6～D7, electric capacity
C1 and three resistance R1～R3；One end of load L1 connects positive pole or one end of resistance R3, the NMOS tube of Zener diode D8 respectively
The positive pole of the source electrode of M2, one end of resistance R1 and diode D7 is followed by VCC, and the other end of load L1 is just meeting diode D6 respectively
Pole, one end of electric capacity C1 and the drain electrode of NMOS tube M1, the source electrode of NMOS tube M1 meets GND, and the grid of NMOS tube M1 is input protection
Rectification circuit input end, the other end of electric capacity C1 connects negative pole and one end of resistance R2 of diode D7 respectively, another of resistance R1
The other end junction point of end and resistance R2 connects the grid of NMOS tube M2, the negative pole of diode D6 and Zener diode D8 negative pole and connects
Point, or the junction point of the other end of the negative pole of diode D6 and resistance R3, connect the drain electrode of NMOS tube M2.
A kind of inductive load voltage PWM magnetic release circuit the most according to claim 4, it is characterised in that: described
Degaussing main circuit, also includes Zener diode D10, and the other end of electric capacity C1 connects through one end of Zener diode D10 and resistance R2
Connect.
6. according to a kind of inductive load voltage PWM magnetic release circuit described in claim 4 or 5, it is characterised in that:
Described input protection rectification circuit input signal be direct current signal or AC signal, the magnitude of voltage of direct current signal be 2～
1000V；The voltage of AC signal is effectively 2～1000V, and frequency is 50Hz or 60Hz；The control of described magnetic release main circuit
Input signal processed be a voltage magnitude be 15V, frequency be the square-wave signal of 100-40000Hz.
7. an inductive load voltage PWM magnetic release circuit, it is characterised in that: include input protection rectification circuit and
Degaussing main circuit；Input protection rectification circuit, including four diode D2～D5 of rectification and two-way TVS pipe or bi-directional voltage stabilizing two
Pole pipe D1；Degaussing main circuit, including NMOS tube M1, audion Q1, load L1, Zener diode D8, two diode D6～D7,
Electric capacity C1 and two resistance R1～R3；One end of load L1 connect respectively the positive pole of Zener diode D8 or one end of resistance R3, three
The positive pole of the emitter stage of pole pipe Q1, one end of resistance R1 and diode D7 is followed by VCC, and the other end of load L1 connects diode respectively
The positive pole of D6, one end of electric capacity C1 and the drain electrode of NMOS tube M1, the source electrode of NMOS tube M1 meets GND, and the grid of NMOS tube M1 is defeated
Entering and protect rectification circuit input end, the other end of electric capacity C1 meets negative pole and one end of resistance R2 of diode D7, resistance R1 respectively
The other end and the other end junction point of resistance R2 connect the base stage of audion Q1, the negative pole of diode D6 and Zener diode D8 bear
Pole junction point, or the junction point of the other end of the negative pole of diode D6 and resistance R3, connect the drain electrode of NMOS tube M2.
A kind of inductive load voltage PWM magnetic release circuit the most according to claim 4, it is characterised in that: described
Degaussing main circuit, also includes diode D10, and the other end of electric capacity C1 connects through one end of Zener diode D10 and resistance R2.
9. according to a kind of inductive load voltage PWM magnetic release circuit described in claim 7 or 8, it is characterised in that:
Described input protection rectification circuit input signal be direct current signal or AC signal, the magnitude of voltage of direct current signal be 2～
1000V；The voltage of AC signal is effectively 2～1000V, and frequency is 50Hz or 60Hz；The control of described magnetic release main circuit
Input signal processed be a voltage magnitude be 15V, frequency be the square-wave signal of 100-40000Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620697056.1U CN205792500U (en) | 2016-06-29 | 2016-06-29 | A kind of inductive load voltage PWM magnetic release circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620697056.1U CN205792500U (en) | 2016-06-29 | 2016-06-29 | A kind of inductive load voltage PWM magnetic release circuit |
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| Publication Number | Publication Date |
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| CN205792500U true CN205792500U (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620697056.1U Expired - Fee Related CN205792500U (en) | 2016-06-29 | 2016-06-29 | A kind of inductive load voltage PWM magnetic release circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205792500U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106027017A (en) * | 2016-06-29 | 2016-10-12 | 浙江桃园科技有限公司 | Inductive load voltage pulse width modulation magnetism releasing circuit |
| CN111464006A (en) * | 2020-05-07 | 2020-07-28 | 浙江桃园智能科技有限公司 | Inductive load driving circuit |
-
2016
- 2016-06-29 CN CN201620697056.1U patent/CN205792500U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106027017A (en) * | 2016-06-29 | 2016-10-12 | 浙江桃园科技有限公司 | Inductive load voltage pulse width modulation magnetism releasing circuit |
| CN106027017B (en) * | 2016-06-29 | 2018-08-14 | 浙江桃园科技有限公司 | Inductive load voltage PWM magnetism release circuit |
| CN111464006A (en) * | 2020-05-07 | 2020-07-28 | 浙江桃园智能科技有限公司 | Inductive load driving circuit |
| CN111464006B (en) * | 2020-05-07 | 2023-08-18 | 浙江桃园智能科技有限公司 | Inductive load driving circuit |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20180629 |