CN213659286U - Circuit for controlling electromagnetic valve by self-excited oscillation voltage doubling and constant current and gas stove using same - Google Patents
Circuit for controlling electromagnetic valve by self-excited oscillation voltage doubling and constant current and gas stove using same Download PDFInfo
- Publication number
- CN213659286U CN213659286U CN202022267704.9U CN202022267704U CN213659286U CN 213659286 U CN213659286 U CN 213659286U CN 202022267704 U CN202022267704 U CN 202022267704U CN 213659286 U CN213659286 U CN 213659286U
- Authority
- CN
- China
- Prior art keywords
- self
- voltage
- resistor
- triode
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000010355 oscillation Effects 0.000 title claims abstract description 35
- 239000003990 capacitor Substances 0.000 claims description 40
- 230000003321 amplification Effects 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 10
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 abstract description 7
- 238000012938 design process Methods 0.000 abstract description 6
- 239000007921 spray Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 6
- 238000011161 development Methods 0.000 description 5
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The utility model discloses a self-oscillation voltage-multiplying and constant current control solenoid's circuit and use its gas-cooker, wherein, self-oscillation voltage-multiplying and constant current control solenoid's circuit includes that the self-oscillation module produces the PWM signal, full wave rectifier module PWM signal output voltage-multiplying drive voltage, negative feedback amplifier module voltage-multiplying drive voltage negative feedback constant current output control solenoid. The utility model discloses a self-excited oscillation voltage doubling and constant current control solenoid's circuit, at first produce the PWM signal by the self-excited oscillation module, then through the PWM signal output voltage doubling driving voltage of full wave rectifier module according to the self-excited oscillation module, amplify the module through the negative feedback at last according to full wave rectifier module's voltage doubling driving voltage negative feedback constant current output control solenoid valve, thereby adopt the mode realization solenoid valve steady output of self-excited oscillation voltage doubling + constant current control, abandon switching power supply chip control, reduce peripheral components and parts, reduce the hardware cost in the design process, and then realize that the gas of gas-cooker stably sprays.
Description
Technical Field
The utility model belongs to the technical field of the solenoid valve, concretely relates to circuit and use its gas-cooker of self-excited oscillation voltage-multiplying and constant current control solenoid valve.
Background
In the market, a 'Boost' plus a switching power supply chip TDA4863 in a switching power supply is generally adopted as a booster circuit for an electromagnetic valve driving circuit.
However, the conventional solenoid valve driving circuit has the disadvantages of high hardware cost, requirement of a dedicated chip, more resource waste of peripheral elements and the like. In the past, many research and development personnel or enterprises neglect innovation and improvement of the part of application due to ink conservation and technical improvement limitation, and objective phenomena such as low product reliability, high development process cost, reduced brand quality and the like are directly caused.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a self-excited oscillation voltage-multiplying and constant current control solenoid's circuit abandons switching power supply chip control, reduces peripheral components and parts, reduces the hardware cost in the design process.
Another object of the utility model is to provide a gas stove.
The utility model adopts the technical proposal that:
a circuit of a self-excited oscillation voltage-multiplying and constant-current control electromagnetic valve comprises a self-excited oscillation module, a full-wave rectification module and a negative feedback amplification module, wherein the self-excited oscillation module is electrically connected with the full-wave rectification module, the full-wave rectification module is electrically connected with the negative feedback amplification module, the self-excited oscillation module is used for generating PWM signals, the full-wave rectification module is used for outputting voltage-multiplying driving voltages according to the PWM signals generated by the self-excited oscillation module, and the negative feedback amplification module is used for outputting the control electromagnetic valve according to the negative feedback constant-current of the voltage-multiplying driving.
Preferably, the self-oscillation module comprises a first triode unit, a second triode unit and a transformer unit, wherein the first triode unit and the second triode unit are both electrically connected with the transformer unit, a first power supply conducts the first triode unit, and then the second triode unit is charged or discharged to form a PWM signal through the change of the current directions of the first triode unit and the transformer unit.
Preferably, the first triode unit comprises a first triode Q1, a first resistor R1 and a second resistor R2, the second triode unit comprises a second triode Q2, a first capacitor C1 and a third resistor R3, the transformer unit comprises a transformer T1, a base of the first triode Q1 is connected in parallel with one end of the first resistor R1 and one end of the second resistor R2, the first power supply is connected in parallel with the other end of the second resistor R2, an emitter of the first triode Q1 and a first pin of the transformer T1, and a second pin of the transformer T1 is connected with a collector of the first triode Q1; a fourth pin of the transformer T1 is connected to a collector of a second triode Q2, a base of the second triode Q2 is connected in parallel to one end of a third resistor R3 and one end of a first capacitor C1, the other end of the third resistor R3 is connected to a third pin of the transformer T1, and an emitter of the second triode Q2 and the other end of the first capacitor C1 are both grounded.
Preferably, the full-wave rectification module includes a fifth diode D5, a sixth diode D6, a seventh diode D7 and an eighth diode D8, an anode of the fifth diode D5 is connected in parallel with a fifth pin of the transformer T1 and a cathode of the sixth diode D6, a cathode of the fifth diode D5 is connected in parallel with a cathode of the seventh diode D7, one end of a third capacitor C3 and a voltage output port, an anode of the seventh diode D7 is connected in parallel with one end of a second capacitor C2, the other end of the third capacitor C3, a cathode of the eighth diode D8 and a seventh pin of the transformer T1, and an anode of the sixth diode D6, an anode of the eighth diode D8 and the other end of the second capacitor C2 are all grounded.
Preferably, the negative feedback amplifying module includes an operational amplifier L1 and a third transistor Q3, a third pin of the operational amplifier L1 is connected in parallel with one end of a fourth resistor R4 and one end of a fifth resistor R5, an eighth pin of the operational amplifier L1 is connected in parallel with the other end of a fifth resistor R5 and one end of a solenoid valve B1, a first pin of the operational amplifier L1 is connected in parallel with one end of a third capacitor C3 and one end of a sixth resistor R6, the other end of the third capacitor C3 is connected in series with a seventh resistor R7 and then connected in parallel with a second pin of the operational amplifier L1, one end of a fourth capacitor C4 and one end of an eighth resistor R8, the other end of the sixth resistor R6 is connected to a base of a third transistor Q3, a collector of the third transistor Q3 is connected to the other end of a solenoid valve B1, an emitter of the third transistor Q3 is connected in parallel with the other end of the eighth resistor R8 and one end of the ninth resistor R9, the eighth pin of the operational amplifier L1, the common connection end of the fifth resistor R5 and the solenoid valve B1 are connected to the voltage output port of the full-wave rectification module, and the other end of the fourth resistor R4, the other end of the fourth capacitor C4, the other end of the ninth resistor R9, and the fourth pin of the operational amplifier L1 are all grounded.
Preferably, the voltage of the first power supply is 3V.
Preferably, the seventh diode D7 and the eighth diode D8 are both zener diodes.
Preferably, the first transistor Q1 is a PNP transistor, and the second transistor Q2 is an NPN transistor.
Preferably, the third transistor Q3 is an NPN transistor.
The utility model discloses a another technical scheme is realized like this:
a gas stove comprises the self-oscillation voltage-multiplying and constant-current control electromagnetic valve circuit.
Compared with the prior art, the utility model discloses a self-excited oscillation voltage doubling and constant current control solenoid valve's circuit, at first produce the PWM signal by the self-excited oscillation module, then through the PWM signal output voltage doubling drive voltage of full wave rectifier module according to the self-excited oscillation module, amplify the module through the negative feedback and according to the voltage doubling drive voltage negative feedback constant current output control solenoid valve of full wave rectifier module at last, thereby adopt the self-excited oscillation voltage doubling + the steady output of constant current control's mode realization solenoid valve, the switching power supply chip control of abandoning, reduce peripheral components and parts, reduce the hardware cost in the design process, and then realize the gas stable injection of gas-cooker, and simultaneously, improve developer's development efficiency, shorten development cycle, establish very big basis for improving product reliability.
Drawings
Fig. 1 is a circuit diagram of a circuit of a self-oscillation voltage-multiplying and constant-current control solenoid valve provided in embodiment 1 of the present invention.
Description of the reference numerals
The circuit comprises a 1-self-oscillation module, 11-a first triode unit, 12-a second triode unit, 13-a transformer unit, a 2-full-wave rectification module and a 3-negative feedback amplification module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The embodiment of the utility model provides a circuit of self-excited oscillation voltage doubling and constant current control solenoid valve, as shown in fig. 1, amplify module 3 including self-excited oscillation module 1, full-wave rectification module 2 and negative feedback, full-wave rectification module 2 is connected to self-excited oscillation module 1 electricity, negative feedback amplification module 3 is connected to full-wave rectification module 2 electricity, self-excited oscillation module 1 is used for producing the PWM signal, full-wave rectification module 2 is used for the PWM signal output voltage doubling drive voltage according to self-excited oscillation module 1 production, negative feedback amplification module 3 is used for the voltage doubling drive voltage negative feedback constant current output control solenoid valve according to full-wave rectification module 2.
Therefore, firstly, the self-oscillation module 1 generates a PWM signal, then the full-wave rectification module 2 outputs a voltage-multiplying driving voltage according to the PWM signal of the self-oscillation module 1, and finally the negative feedback amplification module 3 controls the electromagnetic valve according to the negative feedback constant current output of the voltage-multiplying driving voltage of the full-wave rectification module 2, so that the electromagnetic valve is stably output by adopting a self-oscillation voltage-multiplying and constant current control mode, the control of a switching power supply chip is abandoned, peripheral components are reduced, the hardware cost in the design process is reduced, and further the stable gas injection of the gas stove is realized.
PWM signal, known as Pulse Width Modulation, is an abbreviation of Pulse Width Modulation, and is obtained by modulating the Width of a series of pulses to obtain a desired waveform (including shape and amplitude), and digitally encoding the level of an analog signal, that is, adjusting the change of a duty ratio to adjust the change of signal, energy, and the like, where the duty ratio refers to the percentage of time that a signal is at a high level in a period of the entire signal period, for example, the duty ratio of a square wave is 50%.
The self-oscillation module 1 comprises a first triode unit 11, a second triode unit 12 and a transformer unit 13, wherein the first triode unit 11 and the second triode unit 12 are electrically connected with the transformer unit 13, a first power supply enables the first triode unit 11 to be conducted, and then the second triode unit 12 is charged or discharged to form a PWM signal through the change of the current directions of the first triode unit 11 and the transformer unit 13.
In this way, the first transistor unit 11 is turned on by the first power supply, and then the second transistor unit 12 is continuously charged or discharged by the turning on of the first transistor unit 11 and the change of the current direction of the transformer unit 13, thereby forming a PWM signal output.
The first triode unit 11 comprises a first triode Q1, a first resistor R1 and a second resistor R2, the second triode unit 12 comprises a second triode Q2, a first capacitor C1 and a third resistor R3, the transformer unit 13 comprises a transformer T1, the base of the first triode Q1 is connected in parallel with one end of the first resistor R1 and one end of the second resistor R2, the first power supply is connected in parallel with the other end of the second resistor R2, the emitter of the first triode Q1 and the first pin of the transformer T1, and the second pin of the transformer T1 is connected with the collector of the first triode Q1; a fourth pin of the transformer T1 is connected to a collector of a second triode Q2, a base of the second triode Q2 is connected in parallel to one end of a third resistor R3 and one end of a first capacitor C1, the other end of the third resistor R3 is connected to a third pin of the transformer T1, and an emitter of the second triode Q2 and the other end of the first capacitor C1 are both grounded. The other end of the first resistor R1 is connected to a converter voltage Vboost _ c, the voltage of the first power supply is 3V, the first triode Q1 is a PNP triode, and the second triode Q2 is an NPN triode.
Thus, the method specifically comprises the following steps:
s11, a steady-state bias working point of a first triode Q1 is formed by a first resistor R1 and a second resistor R2, when a first power supply is powered by 3V, the first triode Q1 is conducted to charge a first capacitor C1 through a transformer T1(2-3) and a third resistor R3, and the voltage of the transformer T1(2-3) is positive at the moment and negative at the moment; when the first capacitor C1 is charged to reach the conducting voltage Vbe _ Q2 of the second triode Q2 to be 0.7V, the second triode Q2 is in saturated conduction, the voltage of the transformer T1(1-4) is positive, negative, and positive, the voltage of the transformer T1(2-3) is coupled by the transformer at this time, so that positive feedback is formed to increase the charging of the first capacitor C1, the voltage of the first capacitor C1 rises again sharply, and the process is a forward conduction process;
s12, when Ibe _ Q2 rises sharply, the current Ice _ Q2 of the second triode Q2 rises sharply synchronously and enters a saturated conducting state instantly, the transformer T1(1-4) is saturated by the core of the sharp rise of Ice _ Q2, and when the transformer is saturated magnetically, the current of T1(1-4) does not change any more and the voltage of the transformer is 0 instantly. Since the transformer current cannot change abruptly, T1(1-4) will generate lower positive and upper negative compensation voltage/current. The voltage is instantaneously more positive, negative and positive through the transformer coupling relation T1(2-3), positive is that the polarity change of the voltage causes the Ibe _ Q2 to sharply decrease (the first capacitor C1 also synchronously discharges to the second triode Q2), at this time, the current Ice _ Q2 of the second triode Q2 also sharply decreases synchronously until the second triode Q2 is cut off, and the process is a reverse cut-off process;
s13, and circulating S11-S12 in this way, thereby realizing the storage and release of T1(1-4) self-oscillation PWM energy.
The full-wave rectification module 2 comprises a fifth diode D5, a sixth diode D6, a seventh diode D7 and an eighth diode D8, wherein the anode of the fifth diode D5 is connected in parallel with the fifth pin of the transformer T1 and the cathode of the sixth diode D6, the cathode of the fifth diode D5 is connected in parallel with the cathode of the seventh diode D7, one end of a third capacitor C3 and a voltage output port, the anode of the seventh diode D7 is connected in parallel with one end of a second capacitor C2, the other end of the third capacitor C3, the cathode of the eighth diode D8 and the seventh pin of the transformer T1, and the anode of the sixth diode D6, the anode of the eighth diode D8 and the other end of the second capacitor C2 are all grounded. Wherein the seventh diode D7 and the eighth diode D8 are both zener diodes.
Thus, the method specifically comprises the following steps:
s21, when the current is circulated to S11, the second transistor Q2 is in saturation conduction, Vce _ Q2 is 0V, the power supply 3V excites the transformer T1(1-4) to store energy, at this time, the voltage is positive, negative, and positive, negative according to the voltage of the transformer T1(1-4), the voltage is positive, negative, and negative according to the homonymy end coupling relationship T1(5-7) between the transformer T1(1-4) and the transformer T1(5-7), the voltage is positive, negative, and positive, negative, the energy of the power supply 3V charges the third capacitor C3 through the transformer T1(5-7) and the fifth diode D5, and the output voltage Vc3 is 6V due to the action of the regulator (seventh diode D7, the regulated voltage value of which is 6V), at this time, the sixth diode D6 is reversely turned off;
s22, when the cycle is to S12, since the second transistor Q2 is turned off, the voltage of the transformer T1(1-4) is negative, positive, negative, and according to the same-name end coupling relationship between the transformer T1(1-4) and the transformer T1(5-7), the voltage of the transformer T1(5-7) is also negative, positive, and negative, the energy of the power supply 3V is charged to the second capacitor C2 through the T1(5-7) and the sixth diode D6, and due to the effect of the regulator tube (i.e., the eighth diode D8, the regulated voltage value of which is 6V), the output voltage Vc2 is 6V, and at this time, the fifth diode D5 is turned off in the reverse direction;
and S23, circulating S21-S22, realizing the full-wave rectification voltage-doubling output VOUT (Vc 3+ Vc 2) of the transformer T1(1-4) to 12V, and providing a working power supply for the direct-current electromagnetic valve of the gas stove.
The negative feedback amplifying module 3 comprises an operational amplifier L1 and a third triode Q3, a third pin of the operational amplifier L1 is connected with one end of a fourth resistor R4 and one end of a fifth resistor R5 in parallel, an eighth pin of the operational amplifier L1 is connected with the other end of a fifth resistor R5 and one end of a solenoid valve B1 in parallel, a first pin of the operational amplifier L1 is connected with one end of a third capacitor C3 and one end of a sixth resistor R6 in parallel, the other end of the third capacitor C3 is connected with a seventh resistor R7 in series and then connected with a second pin of the operational amplifier L1, one end of a fourth capacitor C4 and one end of an eighth resistor R8 in parallel, the other end of the sixth resistor R6 is connected with a base of a third triode Q3, a collector of the third triode Q3 is connected with the other end of a solenoid valve B1, an emitter of the third triode Q3 is connected with the other end of an eighth resistor R8 and one end of a ninth resistor R9 in parallel, the eighth pin of the operational amplifier L1, the common connection end of the fifth resistor R5 and the solenoid valve B1 are connected to the voltage output port of the full-wave rectification module 2, and the other end of the fourth resistor R4, the other end of the fourth capacitor C4, the other end of the ninth resistor R9, and the fourth pin of the operational amplifier L1 are all grounded. The third transistor Q3 is an NPN transistor.
In this way, a negative feedback variable is introduced by sampling the current of the solenoid valve B1, the base current of the third transistor Q3 is driven through the output end of the operational amplifier L1 (model LM2904), and the current of the solenoid valve B1 is stably controlled by controlling the collector current of the third transistor Q3 (I _ B1 is IC _ Q3). The method comprises the following steps:
s31, a resistor divider is formed by the fourth resistor R4 and the fifth resistor R5, and the voltage value of the input of the non-inverting terminal of IC2A of the operational amplifier L1 (i.e. the eighth pin of the operational amplifier) is: v + _ IC2A ═ V VOUT R4)/(R5+ R4;
s32, known by the operational amplifier virtual short break principle, V + _ IC2A ≈ V- _ IC2A ≈ VR9 (actually, V + _ IC2A is greater than V- _ IC2A by millivolt or microvolt voltage), and then according to the current calculation formula: i _ R9 ═ VR9/R9, the analytical circuit knows IE _ Q3 ≈ IC _ Q3 ≈ I _ R9 ≈ I _ B1, so the current I _ B1 of the solenoid valve is established;
s33, realizing negative feedback constant current output through the following change control process, and assuming that VOUT voltage fluctuation rises:
the utility model discloses a self-excited oscillation voltage doubling and constant current control solenoid's circuit, at first produce the PWM signal by the self-excited oscillation module, then through the PWM signal output voltage doubling drive voltage of full wave rectifier module according to the self-excited oscillation module, amplify the module through the negative feedback at last according to full wave rectifier module's voltage doubling drive voltage negative feedback constant current output control solenoid, thereby adopt the self-excited oscillation voltage doubling + the mode of constant current control to realize the solenoid valve steady output, abandon switching power supply chip control, reduce peripheral components and parts, reduce the hardware cost in the design process, and then realize the gas stable injection of gas-cooker, and simultaneously, improve developer's development efficiency, shorten development cycle, establish very big basis for improving product reliability.
Example 2
The embodiment 2 of the utility model provides a gas stove, it includes the circuit of self-excited oscillation voltage-multiplying and constant current control solenoid valve.
The utility model discloses a gas-cooker, at first produce the PWM signal by the self-excited oscillation module, then through the PWM signal output voltage-multiplying drive voltage of full wave rectifier module according to the self-excited oscillation module, amplify the module through the negative feedback at last according to the voltage-multiplying drive voltage negative feedback constant current output control solenoid valve of full wave rectifier module, thereby adopt the mode realization solenoid valve of self-excited oscillation voltage-multiplying + constant current control to stabilize the output, abandon switching power supply chip control, reduce peripheral components and parts, reduce the hardware cost in the design process, realize that the gas of gas-cooker stably sprays.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The circuit for controlling the electromagnetic valve through self-excited oscillation voltage doubling and constant current is characterized by comprising a self-excited oscillation module (1), a full-wave rectification module (2) and a negative feedback amplification module (3), wherein the self-excited oscillation module (1) is electrically connected with the full-wave rectification module (2), the full-wave rectification module (2) is electrically connected with the negative feedback amplification module (3), the self-excited oscillation module (1) is used for generating PWM signals, the full-wave rectification module (2) is used for outputting voltage doubling driving voltage according to the PWM signals generated by the self-excited oscillation module (1), and the negative feedback amplification module (3) is used for outputting the control electromagnetic valve through negative feedback constant current according to the voltage doubling driving voltage of the full-wave rectification module (2).
2. The circuit of the self-oscillation voltage-multiplying and constant-current control electromagnetic valve according to claim 1, wherein the self-oscillation module (1) comprises a first triode unit (11), a second triode unit (12) and a transformer unit (13), the first triode unit (11) and the second triode unit (12) are electrically connected with the transformer unit (13), a first power supply conducts the first triode unit (11), and then the second triode unit (12) is charged or discharged to form a PWM signal through the change of the current directions of the first triode unit (11) and the transformer unit (13).
3. A self-oscillating voltage-multiplying and constant-current control solenoid valve circuit according to claim 2, wherein the first triode unit (11) comprises a first triode Q1, a first resistor R1 and a second resistor R2, the second triode unit (12) comprises a second triode Q2, a first capacitor C1 and a third resistor R3, the transformer unit (13) comprises a transformer T1, a base of the first triode Q1 is connected in parallel with one end of the first resistor R1 and one end of the second resistor R2, the first power supply is connected in parallel with the other end of the second resistor R2, an emitter of the first triode Q1 and a first pin of the transformer T1, and a second pin of the transformer T1 is connected with a collector of the first triode Q1; a fourth pin of the transformer T1 is connected to a collector of a second triode Q2, a base of the second triode Q2 is connected in parallel to one end of a third resistor R3 and one end of a first capacitor C1, the other end of the third resistor R3 is connected to a third pin of the transformer T1, and an emitter of the second triode Q2 and the other end of the first capacitor C1 are both grounded.
4. A self-oscillating voltage-multiplying and constant-current control solenoid valve circuit according to claim 3, wherein the full-wave rectification module (2) comprises a fifth diode D5, a sixth diode D6, a seventh diode D7 and an eighth diode D8, wherein an anode of the fifth diode D5 is connected in parallel with a fifth pin of the transformer T1 and a cathode of the sixth diode D6, a cathode of the fifth diode D5 is connected in parallel with a cathode of the seventh diode D7, one end of a third capacitor C3 and a voltage output port, an anode of the seventh diode D7 is connected in parallel with one end of a second capacitor C2, the other end of the third capacitor C3, a cathode of the eighth diode D8 and a seventh pin of the transformer T1, and an anode of the sixth diode D6, an anode of the eighth diode D8 and the other end of the second capacitor C2 are all grounded.
5. A self-oscillation voltage-multiplying and constant-current control solenoid valve circuit as claimed in any one of claims 1 to 4, wherein said negative feedback amplifying module (3) comprises an operational amplifier L1 and a third transistor Q3, a third pin of said operational amplifier L1 is connected in parallel with one end of a fourth resistor R4 and one end of a fifth resistor R5, an eighth pin of said operational amplifier L1 is connected in parallel with the other end of a fifth resistor R5 and one end of a solenoid valve B1, a first pin of said operational amplifier L1 is connected in parallel with one end of a third capacitor C3 and one end of a sixth resistor R6, the other end of said third capacitor C3 is connected in series with a seventh resistor R7 and then connected in parallel with a second pin of said operational amplifier L1, one end of a fourth capacitor C4 and one end of an eighth resistor R8, the other end of said sixth resistor R6 is connected with a base of a third transistor Q3, and a collector of said third transistor Q3 is connected with the other end of a solenoid valve B1, an emitter of the third triode Q3 is connected in parallel with the other end of the eighth resistor R8 and one end of the ninth resistor R9, a common connection end of an eighth pin of the operational amplifier L1, the fifth resistor R5 and the solenoid valve B1 is connected to a voltage output port of the full-wave rectification module (2), and the other end of the fourth resistor R4, the other end of the fourth capacitor C4, the other end of the ninth resistor R9 and a fourth pin of the operational amplifier L1 are all grounded.
6. A self-oscillation voltage-multiplying and constant-current control electromagnetic valve circuit as defined in claim 3 or 4, wherein the voltage of the first power supply is 3V.
7. A self-oscillation voltage-multiplying and constant-current control solenoid valve circuit as claimed in claim 4, wherein said seventh diode D7 and eighth diode D8 are both zener diodes.
8. A self-oscillation voltage-multiplying and constant-current control electromagnetic valve circuit as defined in claim 3 or 4, wherein the first transistor Q1 is a PNP transistor, and the second transistor Q2 is an NPN transistor.
9. A self-oscillation voltage-multiplying and constant-current control electromagnetic valve circuit as defined in claim 5, wherein the third transistor Q3 is an NPN transistor.
10. A gas range, characterized in that it comprises a circuit of a self-oscillating voltage-multiplying and constant-current control solenoid valve according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022267704.9U CN213659286U (en) | 2020-10-13 | 2020-10-13 | Circuit for controlling electromagnetic valve by self-excited oscillation voltage doubling and constant current and gas stove using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022267704.9U CN213659286U (en) | 2020-10-13 | 2020-10-13 | Circuit for controlling electromagnetic valve by self-excited oscillation voltage doubling and constant current and gas stove using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213659286U true CN213659286U (en) | 2021-07-09 |
Family
ID=76700570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022267704.9U Active CN213659286U (en) | 2020-10-13 | 2020-10-13 | Circuit for controlling electromagnetic valve by self-excited oscillation voltage doubling and constant current and gas stove using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213659286U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112198919A (en) * | 2020-10-13 | 2021-01-08 | 华帝股份有限公司 | Circuit for controlling electromagnetic valve by self-excited oscillation voltage doubling and constant current and gas stove using same |
-
2020
- 2020-10-13 CN CN202022267704.9U patent/CN213659286U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112198919A (en) * | 2020-10-13 | 2021-01-08 | 华帝股份有限公司 | Circuit for controlling electromagnetic valve by self-excited oscillation voltage doubling and constant current and gas stove using same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100414825C (en) | Switching power supply circuit and electronic apparatus provided therewith | |
| CN103051184A (en) | Boosted circuit | |
| CN101588131A (en) | Isolated form instead swashs the former limit feedback closed-loop control circuit of current transformer | |
| CN102790434A (en) | Automatic energy-extraction circuit of current transformer | |
| CN213659286U (en) | Circuit for controlling electromagnetic valve by self-excited oscillation voltage doubling and constant current and gas stove using same | |
| CN104052279B (en) | A kind of self-excitation Sepic converter based on MOSFET | |
| KR101648145B1 (en) | Low voltage power supply | |
| CN213661455U (en) | Self-excited oscillation booster circuit | |
| CN211701859U (en) | Negative voltage input and negative voltage output switch type voltage reduction conversion circuit | |
| CN210123712U (en) | Electron gun injector | |
| CN117240115A (en) | Switching tube rectifier bridge, PFC circuit and control method thereof | |
| CN112198919A (en) | Circuit for controlling electromagnetic valve by self-excited oscillation voltage doubling and constant current and gas stove using same | |
| WO2023098199A1 (en) | High-power-density auxiliary power supply based on self-excited buck converter | |
| CN203775499U (en) | LED (light-emitting diode) pulse drive circuit | |
| CN102403896A (en) | Self excited Boost converter based on MOSFET (Metal-Oxide-Semiconductor Field Effect Transistor) | |
| CN110943616B (en) | Buck/Boost circuit soft switch PWM-PFM control system and control method | |
| CN112198922B (en) | Bluetooth chip | |
| CN115528916A (en) | Control circuit and control method of four-switch buck-boost converter | |
| CN218678841U (en) | Pulse width modulation type energy-saving driving system and control module | |
| CN210745021U (en) | Aperiodic BUCK switching power supply circuit | |
| CN102510216A (en) | MOSFET-based auto-excitation type Cuk converter | |
| CN112532026A (en) | Magnetic isolation feedback circuit of space power supply | |
| CN220527893U (en) | Circuit capable of being externally connected with level signal and used for controlling power supply output | |
| CN102522892B (en) | Auto-excitation-type Buck converter based on metal oxide semiconductor field effect transistor (MOSFET) | |
| CN213661459U (en) | Self-oscillation voltage-multiplying circuit and kitchen appliance using same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |