CN219594788U - Control circuit of unhairing equipment - Google Patents
Control circuit of unhairing equipment Download PDFInfo
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- CN219594788U CN219594788U CN202223082361.4U CN202223082361U CN219594788U CN 219594788 U CN219594788 U CN 219594788U CN 202223082361 U CN202223082361 U CN 202223082361U CN 219594788 U CN219594788 U CN 219594788U
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- 238000004804 winding Methods 0.000 claims abstract description 57
- 238000005070 sampling Methods 0.000 claims abstract description 35
- 230000001105 regulatory effect Effects 0.000 claims abstract description 17
- 230000001276 controlling effect Effects 0.000 claims abstract description 9
- 230000005669 field effect Effects 0.000 claims description 21
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 13
- 229910052710 silicon Inorganic materials 0.000 claims description 13
- 239000010703 silicon Substances 0.000 claims description 13
- 230000035617 depilation Effects 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 230000033228 biological regulation Effects 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 5
- 230000003071 parasitic effect Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000035772 mutation Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of control circuits of dehairing devices, and discloses a control circuit of a dehairing device with higher reliability and stable operation, which comprises the following components: the driving circuit (120) is used for receiving the PWM pulse signal output by the master controller; a first transformer (TR 1) for acquiring a current signal, the other end of the primary winding being connected to one end of the drive circuit (120); the sampling circuit (130) is used for acquiring a sampling signal, the other end of the sampling circuit (130) is connected with a sampling feedback end of the Master Controller (MCU), and the sampling signal is fed back to the Master Controller (MCU); the dehairing circuit (140) is used for receiving a current signal for driving the dehairing circuit to work, and the negative electrode of the dehairing circuit is connected with the common terminal; and one end of the regulating circuit (150) is connected with the boosting end of the unhairing circuit (140), and the regulating circuit (150) is used for controlling the working power of the unhairing circuit (140).
Description
Technical Field
The utility model relates to the technical field of control circuits of dehairing devices, in particular to a control circuit of a dehairing device.
Background
At present, when the unhairing equipment is used for treating different parts of a human body, different treatment heads are required to be replaced to realize the switching of different spot sizes, so that one equipment has a plurality of treatment handles, the cost is increased, and the convenience of clinical treatment is reduced.
Therefore, in this context, a laser dehairing optical treatment head is designed to realize two kinds of switchable light spots, one is a continuous switchable light spot laser optical treatment head; one is a rotating step-change spot laser optical treatment head. The design of the two switchable light spot laser dehairing treatment heads respectively comprises the selection of the semiconductor laser light source and the design of the light spot switching method, so that the goal that the same treatment head can switch and output different types of uniform light spots is realized.
However, when the control circuit works on the three different types of uniform light spots output by the different treatment heads, the power tube of the control circuit may be broken down due to possible mutation of working current, so that the stability of the epilator is affected.
Disclosure of Invention
The utility model aims to solve the technical problem that when the control circuit in the prior art works on different treatment heads to output three different types of uniform light spots, the power tube of the control circuit can be broken down due to the fact that working current can be suddenly changed, and provides a control circuit of the depilating equipment with high reliability and stable working.
The technical scheme adopted for solving the technical problems is as follows: a control circuit for an epilation device is configured, comprising:
the driving circuit is configured in the control circuit and is used for receiving the PWM pulse signal output by the master controller;
one end of a primary winding of the first transformer is connected with a power supply output end and used for acquiring a current signal, and the other end of the primary winding is connected with one end of the driving circuit;
a sampling circuit, one end of which is connected with one end of the secondary winding of the first transformer and is used for obtaining a sampling signal,
the other end of the sampling circuit is connected with a sampling feedback end of the master controller, and the sampling signal is fed back to the master controller;
the positive electrode of the unhairing circuit is connected with one end of the secondary winding of the first transformer and is used for receiving the current signal for driving the unhairing circuit to work, and the negative electrode of the unhairing circuit is connected with the common end;
and one end of the regulating circuit is connected with the boosting end of the unhairing circuit, and the regulating circuit is used for controlling the working power of the unhairing circuit.
In some embodiments, the driving circuit includes a first transistor, a second transistor, a third transistor, and a field effect transistor,
and the base electrode of the first triode is connected with the PWM signal end of the master controller and is used for receiving the PWM pulse signal.
The base electrode of the second triode is connected with the collector electrode of the first triode, the emitter electrode of the second triode is connected with the power supply end,
the base electrode of the third triode is connected with the collector electrode of the second triode,
the grid electrode of the field effect transistor is connected with the collector electrode of the third triode,
the drain electrode of the field effect transistor is connected with the other end of the primary winding,
and the source electrode of the field effect transistor is connected with the common end.
In some embodiments, the first transistor is an NPN transistor,
the second triode and the third triode are PNP type triodes,
the field effect transistor is an N-channel enhanced MOS transistor.
In some implementations, the sampling circuit includes a seventh resistor, an eighth resistor, a ninth resistor, and a tenth resistor connected in series,
one end of the seventh resistor is coupled to one end of the secondary winding of the first transformer,
and the connecting ends of the ninth resistor and the tenth resistor are connected with the sampling feedback end of the master controller.
In some embodiments, the regulation circuit comprises a second transformer and a thyristor,
one end of the primary winding of the second transformer is connected with one end of the secondary winding of the first transformer, one end of the primary winding of the second transformer is also connected with the anode of the silicon controlled rectifier, the cathode of the silicon controlled rectifier is connected with the common end,
one end of the secondary winding of the second transformer is connected with the boosting end of the dehairing circuit.
In some embodiments, a trigger circuit is also included,
one end of the trigger circuit is connected with the signal output end of the master controller,
the other end of the trigger circuit is connected with the control end of the controllable silicon.
In some embodiments, the trigger circuit includes a fourth transistor,
the base electrode of the fourth triode is coupled with the signal output end of the master controller,
the collector electrode of the fourth triode is connected with the power supply end,
the emitter of the fourth triode is connected with the control end of the controllable silicon,
and the anode of the controllable silicon is connected with one end of the primary winding of the second transformer.
In some embodiments, a peak-absorbing circuit is also included,
one end of the peak absorption circuit is connected with one end of the primary winding of the first transformer,
the other end of the peak absorption circuit is connected with the other end of the primary winding of the first transformer.
The control circuit of the unhairing device comprises a driving circuit, a first transformer, a sampling circuit, a unhairing circuit and a regulating circuit, wherein the driving circuit is used for receiving PWM pulse signals output by a main controller; the dehairing circuit is used for receiving a current signal for driving the dehairing circuit to work, the negative electrode of the dehairing circuit is connected with the common terminal, and the regulating circuit is used for controlling the working power of the dehairing circuit. Compared with the prior art, through the cooperation of drive circuit, master controller and regulation and control circuit, drive circuit is used for triggering the unhairing circuit work, and master controller is used for controlling the power of unhairing circuit output facula according to the drive duty cycle of drive circuit's operating current adjustment of unhairing circuit, can effectively solve the control circuit work when the even facula of three different grade type is exported to different treatment heads, because operating current probably takes place the mutation, leads to control circuit's power tube probably to be broken down.
Drawings
The utility model will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a circuit schematic of an embodiment of the control circuit of the depilation device provided by the utility model.
Detailed Description
For a clearer understanding of technical features, objects and effects of the present utility model, a detailed description of embodiments of the present utility model will be made with reference to the accompanying drawings.
As shown in fig. 1, in a first embodiment of the control circuit of the depilating device of the present utility model, the control circuit 10 of the depilating device comprises a master MCU, a peak-pull circuit 110, a driving circuit 120, a sampling circuit 130, a depilating circuit 140, a regulating circuit 150 and a trigger circuit 160.
The master controller MCU is provided with a plurality of preset values, such as a load works at low power, medium power and high power.
The method has the functions of calculating, outputting PWM pulse signals, comparing signals and outputting level signals.
The peak absorbing circuit 110 is used for absorbing a parasitic current signal on the primary side of the first transformer TR1 when the load is stopped.
The driving circuit 120 is used to control the on/off state of the first transformer TR 1.
The sampling circuit 130 is configured to obtain a current signal when the load works, and feed back the obtained current signal to the master control MCU.
The epilation circuit 140 is used to generate and output a uniform spot of light for epilation.
The regulating circuit 150 is used for regulating the current or voltage output by the depilating circuit 140 to control the power of its operation.
The trigger circuit 160 is used for controlling the operation state of the regulating circuit 150.
Specifically, the driving circuit 120 is disposed in the control circuit, and an input end of the driving circuit is connected to a pulse signal output end (corresponding to the MCU-PWM end) of the master MCU, and is configured to receive a PWM pulse signal output by the master MCU, and control an on/off state of the first transformer TR1 through the PWM pulse signal.
One end of the primary winding (corresponding to N1) of the first transformer TR1 is connected to a power output terminal (for the DC-IN terminal) for receiving a current signal output from the power output terminal (for the DC-IN terminal), and the other end of the primary winding (corresponding to N1) is connected to one end of the driving circuit 120.
When the driving circuit 120 is turned on, a current loop is formed on the primary winding (corresponding to N1) side of the first transformer TR1, so that a coupling current is output on the secondary winding (corresponding to N2) side of the first transformer TR 1.
One end of the sampling circuit 130 is connected to one end of the secondary winding (corresponding to N2) of the first transformer TR1, and is configured to obtain a sampling signal output from the secondary winding (corresponding to N2) side of the first transformer TR 1.
The other end of the sampling circuit 130 is connected to a sampling feedback end (corresponding to the MCU-ADC end) of the master MCU, and feeds back a sampling signal to the master MCU.
When the load outputs the medium power, the master controller MCU compares the sampling signal with a preset value according to the feedback, and when the sampling signal is larger than the preset value, the master controller MCU outputs a PWM pulse signal for controlling the driving circuit 120 to reduce the driving duty ratio or stops outputting the PWM pulse signal according to the comparison result, so that the safety and the reliability of the load work are ensured.
It should be noted that, when the load output is in a low-power or high-power state, the master controller MCU compares the feedback sampling signal with the corresponding preset value, and then controls the on/off of the driving circuit 120 or controls the driving duty ratio thereof according to the comparison result so as to control the working state thereof.
Further, the positive pole of the dehairing circuit 140 is connected to one end of the secondary winding (corresponding to N2) of the first transformer TR1 for receiving a current signal for driving the dehairing circuit to work, the negative pole of the dehairing circuit 140 is connected to the common terminal, and the dehairing circuit 140 is triggered to work by the current signal input from the secondary winding (corresponding to N2) of the first transformer TR 1.
One end of the regulating circuit 150 is connected to the boost end of the depilating circuit 140, and the regulating circuit 150 is used for controlling the working power of the depilating circuit 140.
For example, when the depilating operation is required on the face, the depilating circuit 140 controls the load output to be in a low power (e.g. 0.2A) state, and the regulation circuit 150 is not interposed, and the driving circuit 120 controls the first transformer TR1 to output the working current;
when the dehairing operation on the arm or leg row is required, the dehairing circuit 140 controls the load output to be in a medium power (for example, the working is 0.4A), at this time, the regulation circuit 150 is not intervened, and the driving circuit 120 controls the first transformer TR1 to output working current;
when the armpit is required to be dehaired, the dehairing circuit 140 controls the load output to be in a high-power (for example, working is 0.7A), at the moment, the regulating circuit 150 is interposed, and the driving circuit 120 is matched with the regulating circuit 150, so that the working current of the dehairing circuit 140 is increased, on one hand, two treatment heads are controlled to output three different types of uniform light spots, so that one head is multipurpose, and the convenience of medical use is enhanced;
on the other hand, the sampling circuit 130 detects a current signal when the load works, and feeds the obtained current signal back to the main controller MCU, and the main controller MCU outputs a PWM pulse signal for controlling the driving circuit 120 to reduce the driving duty ratio or stops outputting the PWM pulse signal according to a comparison result of the sampling signal and a preset value, so that the reliability of the working state of the load is ensured, and the problem that the power tube of the control circuit is possibly broken down due to possible abrupt change of working current can be effectively solved, and the stability of the epilator is further influenced.
In some embodiments, in order to ensure the reliability of the load operation, a first transistor VT101, a second transistor VT102, a third transistor VT103, and a field effect transistor VT104 may be disposed in the driving circuit 120, where the switching transistors have a switching function.
The first transistor VT101 is an NPN transistor,
the second transistor VT102 and the third transistor VT103 are PNP transistors,
the field effect transistor VT104 is an N-channel enhancement MOS transistor.
Specifically, the base electrode of the first triode VT101 is connected to a PWM signal end (corresponding to the MCU-PWM end) of the master MCU through a second resistor R102, and is configured to receive a PWM pulse signal.
The base of the second triode VT102 is connected with the collector of the first triode VT101, the base of the second triode VT102 is connected with a power supply end (corresponding to an ACC12V end) through a third resistor R103 and a fourth resistor R104 which are connected in series, and the emitter of the second triode VT102 is connected with the power supply end (corresponding to the ACC12V end).
The base of the third transistor VT103 is connected to the collector of the second transistor VT102,
the grid electrode of the field effect tube VT104 is connected with the collector electrode of the third triode VT103, the grid electrode of the field effect tube VT104 is connected with the cathode of the second diode D102, the anode of the second diode D102 is connected with the collector electrode of the second triode VT102, the drain electrode of the field effect tube VT104 is connected with the other end of the primary winding, and the source electrode of the field effect tube VT104 is connected with the public end.
Specifically, when the PWM pulse signal output by the master controller MCU is at a high level, the first transistor VT101 is turned on, the base potential of the second transistor VT102 is pulled down, so that the second transistor VT102 is turned on, the gate of the field effect transistor VT104 is at a high level, so that the field effect transistor VT104 is turned on, the current signal forms a current loop on the primary winding (corresponding to N1) side of the first transformer TR1, and further, the current signal is output on the secondary winding (corresponding to N2) side of the first transformer TR1, so as to control the dehairing circuit 140 to operate in a low power or medium power state;
when the load outputs low/medium power, the sampling signal is greater than a preset value, the master controller MCU outputs a control drive circuit 120 according to a comparison result to stop outputting PWM pulse signals, the first triode VT101 is switched from on to off, the base potential of the second triode VT102 is high level, the second triode VT102 is switched from on to off, the base potential of the third triode VT103 is low level, the third triode VT103 is conducted, the grid level of the field effect transistor VT104 is pulled down, the field effect transistor VT104 is further controlled to be cut off, the primary winding (corresponding to N1) of the first transformer TR1 is switched from a channel to off, and no current signal is output on the secondary winding (corresponding to N2) side of the first transformer TR 1.
In some embodiments, in order to improve the reliability of the operation of the control circuit, a seventh resistor R107, an eighth resistor R108, a ninth resistor R109, and a tenth resistor R110 may be disposed in the sampling circuit 130, and are used to obtain a current signal on the secondary winding (corresponding to N2) side of the first transformer TR 1.
The seventh resistor R107, the eighth resistor R108, the ninth resistor R109 and the tenth resistor R110 are connected in series, one end of the seventh resistor R107 is coupled to one end of the secondary winding (corresponding to N2) of the first transformer TR1, the connection ends of the ninth resistor R109 and the tenth resistor R110 are connected with the sampling feedback end (corresponding to the MCU-ADC end) of the master MCU, and the obtained current signal is fed back to the master MCU, and the other end of the tenth resistor R110 is connected with the common end.
In some embodiments, in order to improve the performance of the control circuit, a second transformer TR2 and a thyristor VS101 may be disposed in the regulation circuit 150, where the thyristor VS101 has a switching function.
Specifically, one end of the primary winding (corresponding to the N1 end) of the second transformer TR2 is connected to one end of the secondary winding (corresponding to the N2 end) of the first transformer TR1, one end of the primary winding (corresponding to the N1 end) of the second transformer TR2 is also connected to the anode of the thyristor VS101, the cathode of the thyristor VS101 is connected to the common terminal,
one end of the secondary winding of the second transformer TR2 is connected to the boost terminal of the depilating circuit 140.
In some embodiments, trigger circuit 160 is also included,
one end of the trigger circuit 160 is connected with the signal output end of the master control unit MCU,
the other end of the trigger circuit 160 is connected to the control terminal of the thyristor VS 101.
In some embodiments, to improve the performance of the control circuit, a trigger circuit 160 may be provided in the control circuit and includes a fourth transistor VT105, where the fourth transistor VT105 has a switching function and is an NPN transistor.
Specifically, the base of the fourth triode VT105 is connected to a signal output end (corresponding to the Trigger-output end) of the master MCU through a sixteenth resistor R116, and is configured to receive a level signal output by the master MCU.
The collector of the fourth transistor VT105 is connected to a power supply terminal (corresponding to ACC 12V) through a seventeenth resistor R117 for receiving a driving current signal.
The emitter of the fourth transistor VT105 is connected to the control terminal of the thyristor VS101,
the anode of the thyristor VS101 is connected to one end of the primary winding of the second transformer TR 2.
Specifically, when the load needs to be lifted to a high-power working state, the level signal output by the signal output end (corresponding to the Trigger-Puise end) of the main controller MCU is at a low level, the fourth triode VT105 is cut off, the primary winding (corresponding to the N1 end) of the second transformer TR2, to which the current signal output by the secondary winding (corresponding to the N2 end) of the first transformer TR1 is input, is subjected to the boosting treatment of the second transformer TR2, and then is input to the boosting end of the dehairing circuit 140 to increase the working current of the dehairing circuit 140;
when the load is required to be controlled in a low/medium power working state, a level signal output by a signal output end (corresponding to a Trigger-Puise end) of the master controller MCU is high level, the fourth triode VT105 is switched from off to on state, the control end of the controlled silicon VS101 is high level, the controlled silicon VS101 is enabled to work in the on state, the potential of a primary winding (corresponding to an N1 end) of the second transformer TR2 is pulled down, no induction current is caused on a secondary winding side of the second transformer TR2, and the load is controlled to work in the low/medium power state.
In some embodiments, in order to ensure the safety of the load operation, a peak-suction circuit 110 may be provided in the circuit, wherein one end of the peak-suction circuit 110 is connected to one end of the primary winding (corresponding to N1) of the first transformer TR1, and the other end of the peak-suction circuit 110 is connected to the other end of the primary winding (corresponding to N1) of the first transformer TR 1.
Specifically, the peak absorption circuit 110 includes a first diode D101, a first resistor R101, and a fourth capacitor C104, where the first resistor R101 and the fourth capacitor C104 connected in parallel are connected to one end of a primary winding (corresponding to N1) of the first transformer TR1, an anode of the first diode D101 is connected to the other end of the primary winding (corresponding to N1) of the first transformer TR1, and a cathode of the first diode D101 is connected to the other ends of the first resistor R101 and the fourth capacitor C104.
When the load suddenly stops, a relatively large parasitic current is formed on the primary winding (corresponding to N1) side of the first transformer TR1, and in order to avoid breakdown of the field effect transistor VT104 or other switching transistors, the parasitic current of the primary winding (corresponding to N1) of the first transformer TR1 is input into the first resistor R101 and the fourth capacitor C104 through the first diode D101, and the parasitic current is consumed through the first resistor R101 and the fourth capacitor C104, so that the safety and reliability of the circuit are further ensured.
The embodiments of the present utility model have been described above with reference to the accompanying drawings, but the present utility model is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present utility model and the scope of the claims, which are to be protected by the present utility model.
Claims (8)
1. A control circuit for an epilation device, comprising:
the driving circuit is configured in the control circuit and is used for receiving the PWM pulse signal output by the master controller;
one end of a primary winding of the first transformer is connected with a power supply output end and used for acquiring a current signal, and the other end of the primary winding is connected with one end of the driving circuit;
a sampling circuit, one end of which is connected with one end of the secondary winding of the first transformer and is used for obtaining a sampling signal,
the other end of the sampling circuit is connected with a sampling feedback end of the master controller, and the sampling signal is fed back to the master controller;
the positive electrode of the unhairing circuit is connected with one end of the secondary winding of the first transformer and is used for receiving the current signal for driving the unhairing circuit to work, and the negative electrode of the unhairing circuit is connected with the common end;
and one end of the regulating circuit is connected with the boosting end of the unhairing circuit, and the regulating circuit is used for controlling the working power of the unhairing circuit.
2. Control circuit of a depilation device as claimed in claim 1, characterized in that,
the driving circuit comprises a first triode, a second triode, a third triode and a field effect transistor,
the base electrode of the first triode is connected with the PWM signal end of the master controller and is used for receiving the PWM pulse signal,
the base electrode of the second triode is connected with the collector electrode of the first triode, the emitter electrode of the second triode is connected with the power supply end,
the base electrode of the third triode is connected with the collector electrode of the second triode,
the grid electrode of the field effect transistor is connected with the collector electrode of the third triode,
the drain electrode of the field effect transistor is connected with the other end of the primary winding,
and the source electrode of the field effect transistor is connected with the common end.
3. Control circuit of a depilation device as claimed in claim 2, characterized in that,
the first triode is an NPN triode,
the second triode and the third triode are PNP type triodes,
the field effect transistor is an N-channel enhanced MOS transistor.
4. Control circuit of a depilation device as claimed in claim 1, characterized in that,
the sampling circuit comprises a seventh resistor, an eighth resistor, a ninth resistor and a tenth resistor which are connected in series,
one end of the seventh resistor is coupled to one end of the secondary winding of the first transformer,
and the connecting ends of the ninth resistor and the tenth resistor are connected with the sampling feedback end of the master controller.
5. Control circuit of a depilation device as claimed in claim 1, characterized in that,
the regulating circuit comprises a second transformer and a controllable silicon,
one end of the primary winding of the second transformer is connected with one end of the secondary winding of the first transformer, one end of the primary winding of the second transformer is also connected with the anode of the silicon controlled rectifier,
the cathode of the controllable silicon is connected with the common terminal,
one end of the secondary winding of the second transformer is connected with the boosting end of the dehairing circuit.
6. Control circuit of a depilation device as claimed in claim 5, characterized in that,
also comprises a trigger circuit, wherein the trigger circuit is connected with the control circuit,
one end of the trigger circuit is connected with the signal output end of the master controller,
the other end of the trigger circuit is connected with the control end of the controllable silicon.
7. Control circuit of a depilation device as claimed in claim 6, characterized in that,
the trigger circuit comprises a fourth triode which,
the base electrode of the fourth triode is coupled with the signal output end of the master controller,
the collector electrode of the fourth triode is connected with the power supply end,
the emitter of the fourth triode is connected with the control end of the controllable silicon,
and the anode of the controllable silicon is connected with one end of the primary winding of the second transformer.
8. Control circuit of a depilation device as claimed in any of the claims 1 to 7, characterized in that,
also comprises a peak-absorbing circuit, wherein the peak-absorbing circuit is connected with the peak-absorbing circuit,
one end of the peak absorption circuit is connected with one end of the primary winding of the first transformer,
the other end of the peak absorption circuit is connected with the other end of the primary winding of the first transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223082361.4U CN219594788U (en) | 2022-11-21 | 2022-11-21 | Control circuit of unhairing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223082361.4U CN219594788U (en) | 2022-11-21 | 2022-11-21 | Control circuit of unhairing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219594788U true CN219594788U (en) | 2023-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223082361.4U Active CN219594788U (en) | 2022-11-21 | 2022-11-21 | Control circuit of unhairing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219594788U (en) |
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- 2022-11-21 CN CN202223082361.4U patent/CN219594788U/en active Active
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