CN103338029A - Automatic reset device - Google Patents
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- CN103338029A CN103338029A CN2013102466603A CN201310246660A CN103338029A CN 103338029 A CN103338029 A CN 103338029A CN 2013102466603 A CN2013102466603 A CN 2013102466603A CN 201310246660 A CN201310246660 A CN 201310246660A CN 103338029 A CN103338029 A CN 103338029A
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Abstract
The invention discloses an automatic reset device. The automatic reset device comprises an on/off signal detection circuit, a time-delay circuit and a reset signal output circuit, wherein the on/off signal detection circuit is used for detecting an on signal and an off signal of electronic equipment; the time-delay circuit is connected with the on/off signal detection circuit and is used for delaying time with fixed length when the on/off signal detection circuit detects the off signal and then sending out a notification signal; the reset signal output circuit is connected with the time-delay circuit and is used for outputting a reset signal to a system chip of the electronic equipment after receiving the notification signal. The automatic reset device provided by the invention can solve the problem that the existing electronic products can reset the runaway program only by manually pressing down a mechanical reset press button.
Description
Technical field
The present invention relates to electronic product development technique field, particularly relate to a kind of automatic reset device.
Background technology
For using rechargeable battery powered electronic product, owing to can't in product, take out easily as button cell or dry cell in design.When misprogramming appears in electronic product, can't allow system reset by inserting again behind the deenergization, therefore may cause the problem that can't start shooting or shut down, make product to use.
In order to prevent the program fleet of electronic product, generally can design a mechanical type key switch, when system program is disorderly, realize the hand-reset to system.
Prior mechanical resets, design fairly simple, but for the electronic product of miniaturization, because may there be the awkward problem that does not have the position to place mechanical reset switch in the restriction of the own size of product and for the design requirement attractive in appearance of product.And, use mechanical switch to reset, need the user manually to finish; Occur when unusual in system in addition, general user may be judged as this product fault, and has ignored the operation that resets.
In sum, existing electronic product exists and can only design not enough hommization by manually pressing the problem that program that the mechanical type reset button flies race resets.
Summary of the invention
The invention provides a kind of automatic reset device, this device can solve existing electronic product can only reset the problem that can not reset automatically by manually pressing the mechanical type reset button to the program that race flies.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention discloses a kind of automatic reset device, this device comprises: the switching on and shutting down signal deteching circuit of the starting-up signal of detected electrons equipment and off signal; Be connected, and when described switching on and shutting down signal deteching circuit detects off signal give notice after the time delay circuit of signal of time-delay regular length with described switching on and shutting down signal deteching circuit; Be connected with described delay circuit, and receiving the reset signal output circuit of described notification signal to the System on Chip/SoC output reset signal of described electronic equipment.
In said apparatus, described switching on and shutting down signal deteching circuit comprises: the 3rd resistance, the 4th field effect transistor; One end of described the 3rd resistance is connected with the switching on and shutting down signal end of described electronic equipment, and the other end is connected with the grid of the 4th field effect transistor; The grounded drain of described the 4th field effect transistor, the source electrode of described the 4th field effect transistor is connected with delay circuit.
In said apparatus, described switching on and shutting down signal deteching circuit also comprises: diode and bi-directional voltage stabilizing pipe; The positive pole of described diode is connected with the drain electrode of described the 4th field effect transistor, and the negative pole of described diode is connected with the source electrode of described the 4th field effect transistor; One end of described bi-directional voltage stabilizing pipe is connected with the grid of the 4th field effect transistor, and the other end of described bi-directional voltage stabilizing pipe is connected with the drain electrode of the 4th field effect transistor.
In said apparatus, described delay circuit comprises: the 5th resistance, the 7th resistance and the 9th capacitor; One end of described the 5th resistance is connected with the internal work voltage end of described electronic equipment, and the other end of described the 5th resistance is connected with the source electrode of the 4th field effect transistor; One end of described the 7th resistance is connected with the source electrode of the 4th field effect transistor, and the other end of described the 7th resistance is connected with an end of the 9th capacitor, the other end ground connection of the 9th capacitor.
In said apparatus, described reset signal output circuit comprises: the tenth resistance, the 9th resistance, the 5th triode, first resistance and second capacitor; One end of described the tenth resistance is connected with the other end of described the 7th resistance, and the other end of the tenth resistance is connected with the base stage of the 5th triode; One end of the 9th resistance is connected with the base stage of the 5th triode, and the other end of the 9th resistance is connected with the emitter of the 5th triode; The grounded emitter of the 5th triode, the collector electrode of the 5th triode is connected with the System on Chip/SoC of electronic equipment; One end of first resistance is connected with the internal work voltage end of described electronic equipment, and the other end of first resistance is connected with the collector electrode of the 5th triode; One end ground connection of second capacitor, the other end of second capacitor is connected with the collector electrode of the 5th triode.
In said apparatus, described device also comprises: be connected with the reset signal output circuit, control the reset control circuit of output of the reset signal of described reset signal output circuit according to control signal.
In said apparatus, described reset control circuit comprises: the 8th resistance and the 6th triode; One end of described the 8th resistance is connected with the control signal input, and the other end of the 8th resistance is connected with the base stage of the 6th triode; The collector electrode of described the 6th triode is connected with the other end of the 7th resistance, the grounded emitter of the 6th triode.
In said apparatus, described the 4th field effect transistor is N channel field-effect pipe.
In said apparatus, described the 6th triode is NPN type triode.
In said apparatus, described the 5th triode is NPN type triode.
In sum, the invention provides a kind of automatic reset device, this device comprises the starting-up signal of detected electrons equipment and the switching on and shutting down signal deteching circuit of off signal; Be connected, and when described switching on and shutting down signal deteching circuit detects off signal give notice after the time delay circuit of signal of time-delay regular length with described switching on and shutting down signal deteching circuit; Be connected with described delay circuit, and receiving the reset signal output circuit of described notification signal to the System on Chip/SoC output reset signal of described electronic equipment.Technical scheme provided by the invention substitutes mechanical switch and realizes system's auto-reset function by adopting the capacitor charge and discharge principle.By adopting electronic devices and components, detect off signal automatically; Utilize the capacitor charge and discharge time-delay, after each shutdown, the time-delay fixed time realizes the system of electronic equipment is automatically reset.Can solve that existing electronic product exists can only be by manually pressing the problem that program that the mechanical type reset button flies race resets.
Description of drawings
Fig. 1 is the structural representation of the automatic reset device in an embodiment of the present invention;
Fig. 2 is the circuit diagram of the automatic reset device in an embodiment of the present invention;
Fig. 3 is the structural representation of the automatic reset device in further embodiment of this invention;
Fig. 4 is the circuit diagram of the automatic reset device in further embodiment of this invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
Automatic reset device provided by the present invention is arranged on the inside of electronic equipment, with electronics inner System on Chip/SoC is set and is connected.When electronic equipment shuts down, according to detected off signal, the time-delay regular length after the time to reset signal of the System on Chip/SoC of electronic equipment output.The System on Chip/SoC of electronic equipment is realized resetting of electronic equipment according to reset signal.Use the present equipment of automatic reset device provided by the invention not need additionally to arrange mechanical switch, automatic reset device provided by the invention adopts electronic devices and components, energy is the off signal of detected electrons equipment automatically, and setting automatically resets to electronics after time-delay a period of time after the shutdown.Can solve that existing electronic product exists can only be by manually pressing the problem that program that the mechanical type reset button flies race resets.Can prevent that the user from because the erroneous judgement electronic equipment breaks down, causing unnecessary loss and ignored reset operation.
Fig. 1 is the structural representation of the automatic reset device in an embodiment of the present invention; As shown in Figure 1, this automatic reset device comprises: the switching on and shutting down signal deteching circuit 101 of the starting-up signal of detected electrons equipment and off signal; Be connected, and when switching on and shutting down signal deteching circuit 101 detects off signal give notice after the time delay circuit 102 of signal of time-delay regular length with switching on and shutting down signal deteching circuit 101; Be connected with delay circuit 102, and at the reset signal output circuit 103 of notified signal to the System on Chip/SoC output reset signal of electronic equipment.
Because automatic reset device provided by the invention is to be connected with the System on Chip/SoC of electronic equipment, or be set directly on the System on Chip/SoC of electronic equipment.The input of switching on and shutting down signal deteching circuit 101 is connected with the power supply circuits of electronic equipment, and namely when electronic equipment start or operate as normal, switching on and shutting down signal deteching circuit 101 just can detect the high level input, namely detects starting-up signal.In electronic equipment shutdown, or during outage, the input of switching on and shutting down signal deteching circuit 101 does not have the high level signal input, namely detects off signal.In an embodiment of the present invention, starting-up signal is under the electronic equipment "on" position, the high level of input.Off signal is under the electronic equipment off-position, detected low level.
Fig. 2 is the circuit diagram of the automatic reset device in an embodiment of the present invention, is example with Fig. 2, and each circuit in the automatic reset device provided by the invention is described.As shown in Figure 2,
In the present embodiment, switching on and shutting down signal deteching circuit 101 comprises: the 3rd resistance R 3, the 4th field effect transistor Q4.Delay circuit comprises: the 5th resistance R 5, the 7th resistance R 7 and the 9th capacitor C9.The reset signal output circuit comprises: the tenth resistance R 10, the 9th resistance R 9, the 5th triode Q5, first resistance R 1 and the second capacitor C2.
Switching on and shutting down signal deteching circuit 101 is connected with delay circuit 102, and delay circuit 102 is connected with reset signal output circuit 103.
In the present embodiment, an end of the 3rd resistance R 3 is connected with the switching on and shutting down signal end of electronic equipment, is exemplified as, and is connected with the power supply circuits of electronic equipment; The other end of the 3rd resistance R 3 is connected with the grid of the 4th field effect transistor Q4.The grounded drain of the 4th field effect transistor Q4, the source electrode of the 4th field effect transistor Q4 is connected with delay circuit.
In preferred embodiment of the present invention, the 4th field effect transistor Q4 that splits in the off signal testing circuit for the unexpected start that prevents electronic equipment or shutdown impacts, preferable, the switching on and shutting down signal deteching circuit also comprises: diode D1 and bi-directional voltage stabilizing pipe D2.
Wherein, the positive pole of diode D1 is connected with the drain electrode of the 4th field effect transistor Q4, and the negative pole of diode D1 is connected with the source electrode of the 4th field effect transistor Q4; The effect of this diode D1 is that the electric current that can prevent delay circuit 102 impacts to the 4th field effect transistor Q4, opens the effect of protection the 4th field effect transistor Q4.
The end of bi-directional voltage stabilizing pipe D2 is connected with the grid of the 4th field effect transistor Q4, and the other end of bi-directional voltage stabilizing pipe D2 is connected with the drain electrode of the 4th field effect transistor Q4.The effect of this bi-directional voltage stabilizing pipe D2 is, can prevent that the electric current of electronic device power supply circuit from impacting to the 4th field effect transistor Q4, opens the effect of protection the 4th field effect transistor Q4.
In the above-described embodiments, the 4th field effect transistor Q4 is N channel field-effect pipe.
Above-described embodiment only is a kind of specific implementation of the switching on and shutting down testing circuit among the present invention, in other embodiments of the invention, the circuit that can also be made up of other electronic devices as long as can realize detecting the circuit of starting-up signal or off signal, is not given unnecessary details one by one at this.
In the present embodiment, delay circuit comprises: the 5th resistance R 5, the 7th resistance R 7 and the 9th capacitor C9;
Wherein, an end of the 5th resistance R 5 is connected with the internal work voltage end of electronic equipment, and the other end of the 5th resistance R 5 is connected with the source electrode of the 4th field effect transistor Q4.
One end of the 7th resistance R 7 is connected with the source electrode of the 4th field effect transistor Q4, and the other end of the 7th resistance R 7 is connected with the end of the 9th capacitor C9, the other end ground connection of the 9th capacitor C9.
Under the situation of not conducting between the drain electrode of the 4th field effect transistor Q4 and the source electrode, the internal work voltage end of electronic equipment can carry out charging operations to the 9th capacitor.Under the situation of conducting between the drain electrode of the 4th field effect transistor Q4 and the source electrode, the internal work voltage end of electronic equipment can not carry out charging operations to the 9th capacitor C9 because of ground connection.
In an embodiment of the present invention, because the voltage of the internal work voltage end of electronic equipment is constant, can regulate the set time of time-delay by regulating the capacitance of the 9th capacitor C9.
Above-described embodiment only is a kind of specific implementation of the delay circuit among the present invention, in other embodiments of the invention, the circuit that can also be formed by other electronic devices, as long as in the time of can being implemented in the switching on and shutting down signal deteching circuit and detecting off signal, the time-delay regular length signal of giving notice after the time gets final product, and does not give unnecessary details one by one at this.
In the present embodiment, the reset signal output circuit comprises: the tenth resistance R 10, the 9th resistance R 9, the 5th triode Q5, first resistance R 1 and the second capacitor C2; One end of the tenth resistance R 10 is connected with the other end of the 7th resistance R 7, and the other end of the tenth resistance R 10 is connected with the base stage of the 5th triode Q5; One end of the 9th resistance R 9 is connected with the base stage of the 5th triode Q5, and the other end of the 9th resistance R 9 is connected with the emitter of the 5th triode Q5; The grounded emitter of the 5th triode Q5, the collector electrode of the 5th triode Q5 is connected with the System on Chip/SoC of electronic equipment; One end of first resistance R 1 is connected with the internal work voltage end of electronic equipment, and the other end of first resistance R 1 is connected with the collector electrode of the 5th triode Q5; The end ground connection of the second capacitor C2, the other end of the second capacitor C2 is connected with the collector electrode of the 5th triode Q5.
Under the situation that the charging of the 9th capacitor is finished, the base stage of the 5th triode Q5 has the voltage input, the 5th triode Q5 conducting, the System on Chip/SoC no-voltage input of electronic equipment.
Be under the discharge condition at the 9th capacitor, under the uncompleted situation of perhaps charging, the then base stage no-voltage of the 5th triode Q5 input, the 5th not conducting of triode Q5, the System on Chip/SoC of electronic equipment has the voltage input.
Above-described embodiment only is a kind of specific implementation of the reset signal output circuit among the present invention, in other embodiments of the invention, the circuit that can also be formed by other electronic devices, receive behind the notification signal that delay circuit sends and not give unnecessary details one by one at this to the System on Chip/SoC output reset signal of electronic equipment as long as can be implemented in.
Operation principle to automatic reset device provided by the invention is elaborated below.
Because the input of switching on and shutting down signal deteching circuit 101 is connected with the switching on and shutting down signal end of electronic equipment, when electronic equipment is started shooting, perhaps under the normal operating conditions, the input of switching on and shutting down signal deteching circuit 101 namely as shown in Figure 2 the input of ON-OFF end be high level.This high level arrives the grid of the 4th field effect transistor Q4 by the 3rd resistance R 3, make the 4th field effect transistor Q4 source electrode with drain between conducting.Because the source electrode of the 4th field effect transistor Q4 is connected with the internal work voltage end of electronic equipment by the 5th resistance R 5 of delay circuit 102, and the grounded drain of the 4th field effect transistor Q4; After the 4th field effect transistor conducting, the 9th capacitor C9 is because discharge voltage is low, makes the base stage no-voltage input of the 5th triode in the reset signal output circuit 103, the 5th not conducting of triode Q5; Then the output of the RESET of this reset signal output circuit 103 end is high level, the not conduct of System on Chip/SoC of electronic equipment, and electronic equipment can not be reset.
When electronic equipment shut down, the input of switching on and shutting down signal deteching circuit 101 i.e. as shown in Figure 2 ON-OFF end did not have the voltage input, is low level.Then not conducting between the source electrode of the 4th field effect transistor Q4 and the drain electrode; The internal work voltage end of electronic equipment charges by the 5th resistance R 5 and 7 couples of the 9th capacitor C9 of the 7th resistance R, after after a while, when the 9th capacitor C9 is charged to certain voltage, makes the 5th triode Q5 conducting; Because the collector electrode of the 5th triode Q5 is connected with the internal work voltage end of electronic equipment by first resistance R 1, and the grounded emitter of the 5th triode Q5; Then after the 5th triode Q5 conducting, the second capacitor C2 is low because of discharge voltage, make that the output in the reset signal output circuit 103 is low level, the low level that the System on Chip/SoC of electronic equipment is exported according to this reset signal output circuit 103 makes the system of this electronic equipment reset.
Under some special situation, the user may not wish when shutdown electronic equipment to be automatically reset.Fig. 3 is the structural representation of the automatic reset device in further embodiment of this invention, as shown in Figure 3, this automatic reset device also comprises: be connected with reset signal output circuit 103, according to the reset control circuit 104 of the output of the reset signal of control signal control reset signal output circuit 103.
Be specially, reset control circuit 104 is controlled the output of the reset signal of reset signal output circuit 103 according to the high level signal of input; According to the low level signal of input, not the exporting of the reset signal of control reset signal output circuit 103.
Fig. 4 is the circuit diagram of the automatic reset device in further embodiment of this invention, and as shown in Figure 4, reset control circuit 104 comprises: the 8th resistance R 8 and the 6th triode Q6.
One end of the 8th resistance R 8 is connected with the input of reset control circuit 104, and the other end of the 8th resistance R 8 is connected with the base stage of the 6th triode Q6; The collector electrode of the 6th triode Q6 is connected with the delay circuit end, the grounded emitter of the 6th triode Q6.
Wherein, the input termination control signal of reset control circuit 104, wherein control signal can be high level signal or the low level signal of input.Reset control circuit 104 is controlled the conducting of the 6th triode Q6 according to the high level signal of input, and the notification signal that control delay circuit 102 sends can not normally send to reset signal output circuit 103; Control the 6th triode Q6 according to the low level signal of input and close, the notification signal that makes delay circuit 102 send can normally send to reset signal output circuit 103.
Above-described embodiment only is a kind of specific implementation of the reset control circuit among the present invention, in other embodiments of the invention, the circuit that can also be formed by other electronic devices, as long as can realize controlling according to the control signal of input the output of the reset signal of reset signal output circuit 103, not give unnecessary details one by one at this.
Referring to circuit diagram shown in Figure 3, the workflow to the automatic reset device among this embodiment describes below.
When the user wishes in shutdown, when the system of electronic equipment not being resetted, input by reset control circuit 104 i.e. high level signal of the end of CTRL shown in figure input, this high level signal arrives the base stage of the 6th triode Q6 by the 8th resistance R 8, makes conducting between the collector electrode of the 6th triode Q6 and the emitter.Then after shutdown, the high level of delay circuit 102 outputs can pass through the 6th triode Q6 and ground connection, voltage on the 9th capacitor C9 discharges by the 6th triode Q6, make the 5th not conducting of triode Q5, then reset signal output circuit 103 outputs are that the RESET end shown in Fig. 3 is high level signal, the not conduct of System on Chip/SoC of electronic equipment.Namely after the 5th not conducting of triode Q5, the internal work voltage end of electronic equipment is by 1 pair of second capacitor C2 charging of first resistance R, treat that second capacitor C2 charging is finished after, to RESET end output high level.
When the user wished in when shutdown, the system of electronic equipment is resetted, low level of input input of reset control circuit 104 makes the 6th not conducting of triode Q6; Delay circuit 102 makes conducting between the emitter of the 5th triode Q5 and the collector electrode at the high level signal of exporting after the shutdown, make the RESET end be low level signal, the System on Chip/SoC of electronic equipment resets according to the system of the low level signal of importing to electronic equipment.
In the above embodiment of the present invention, the 6th triode Q6 is NPN type triode, and the 5th triode Q5 is NPN type triode.
In sum, the invention provides a kind of automatic reset device, this device comprises the starting-up signal of detected electrons equipment and the switching on and shutting down signal deteching circuit of off signal; Be connected, and when described switching on and shutting down signal deteching circuit detects off signal give notice after the time delay circuit of signal of time-delay regular length with described switching on and shutting down signal deteching circuit; Be connected with described delay circuit, and receiving the reset signal output circuit of described notification signal to the System on Chip/SoC output reset signal of described electronic equipment.Technical scheme provided by the invention substitutes mechanical switch and realizes system's auto-reset function by adopting the capacitor charge and discharge principle.By adopting electronic devices and components, detect off signal automatically; Utilize the capacitor charge and discharge time-delay, can be after each shutdown, the time-delay fixed time realizes the system of electronic equipment is automatically reset.Need not reason and corresponding manual operation that the user judges the generation problem, design hommization more.And, use and the invention provides automatic reset device, need not increases the reset key switch at product, makes to use electronic equipment of the present invention to keep attractive in appearance and small design.
The above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention.All any modifications of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., all be included in protection scope of the present invention.
Claims (10)
1. an automatic reset device is characterized in that, comprising:
The switching on and shutting down signal deteching circuit of the starting-up signal of detected electrons equipment and off signal;
Be connected, and when described switching on and shutting down signal deteching circuit detects off signal give notice after the time delay circuit of signal of time-delay regular length with described switching on and shutting down signal deteching circuit;
Be connected with described delay circuit, and after receiving described notification signal, export the reset signal output circuit of reset signal to the System on Chip/SoC of described electronic equipment.
2. device according to claim 1 is characterized in that,
Described switching on and shutting down signal deteching circuit comprises: the 3rd resistance, the 4th field effect transistor;
One end of described the 3rd resistance is connected with the switching on and shutting down signal end of described electronic equipment, and the other end is connected with the grid of the 4th field effect transistor;
The grounded drain of described the 4th field effect transistor, the source electrode of described the 4th field effect transistor is connected with delay circuit.
3. device according to claim 2 is characterized in that, described switching on and shutting down signal deteching circuit also comprises: diode and bi-directional voltage stabilizing pipe;
The positive pole of described diode is connected with the drain electrode of described the 4th field effect transistor, and the negative pole of described diode is connected with the source electrode of described the 4th field effect transistor;
One end of described bi-directional voltage stabilizing pipe is connected with the grid of the 4th field effect transistor, and the other end of described bi-directional voltage stabilizing pipe is connected with the drain electrode of the 4th field effect transistor.
4. according to claim 2 or 3 described devices, it is characterized in that,
Described delay circuit comprises: the 5th resistance, the 7th resistance and the 9th capacitor;
One end of described the 5th resistance is connected with the internal work voltage end of described electronic equipment, and the other end of described the 5th resistance is connected with the source electrode of the 4th field effect transistor;
One end of described the 7th resistance is connected with the source electrode of the 4th field effect transistor, and the other end of described the 7th resistance is connected with an end of the 9th capacitor, the other end ground connection of the 9th capacitor.
5. device according to claim 4 is characterized in that,
Described reset signal output circuit comprises: the tenth resistance, the 9th resistance, the 5th triode, first resistance and second capacitor;
One end of described the tenth resistance is connected with the other end of described the 7th resistance, and the other end of the tenth resistance is connected with the base stage of the 5th triode;
One end of the 9th resistance is connected with the base stage of the 5th triode, and the other end of the 9th resistance is connected with the emitter of the 5th triode;
The grounded emitter of the 5th triode, the collector electrode of the 5th triode is connected with the System on Chip/SoC of electronic equipment;
One end of first resistance is connected with the internal work voltage end of described electronic equipment, and the other end of first resistance is connected with the collector electrode of the 5th triode;
One end ground connection of second capacitor, the other end of second capacitor is connected with the collector electrode of the 5th triode.
6. device according to claim 5 is characterized in that, described device also comprises:
Be connected with the reset signal output circuit, control the reset control circuit of output of the reset signal of described reset signal output circuit according to the control signal of input.
7. device according to claim 6 is characterized in that, described reset control circuit comprises: the 8th resistance and the 6th triode;
One end of described the 8th resistance is connected with the control signal input, and the other end of the 8th resistance is connected with the base stage of the 6th triode;
The collector electrode of described the 6th triode is connected with the other end of the 7th resistance, the grounded emitter of the 6th triode.
8. device according to claim 7 is characterized in that, described the 4th field effect transistor is N channel field-effect pipe.
9. device according to claim 8 is characterized in that, described the 6th triode is NPN type triode.
10. device according to claim 9 is characterized in that, described the 5th triode is NPN type triode.
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| CN104483879A (en) * | 2014-12-12 | 2015-04-01 | 福建联迪商用设备有限公司 | Device and method for controlling response time of power switch |
| CN104883164A (en) * | 2015-05-07 | 2015-09-02 | 青岛歌尔声学科技有限公司 | Reset circuit and electronic device equipped with same |
| CN108539970A (en) * | 2018-05-23 | 2018-09-14 | 杭州先临爱打印科技有限公司 | Smart electronics power switch and the 3D printer for configuring the switch |
| CN110262608A (en) * | 2019-06-27 | 2019-09-20 | 惠州市德赛西威汽车电子股份有限公司 | A kind of circuit reducing display screen quiescent current |
| CN110417260A (en) * | 2019-07-23 | 2019-11-05 | 武汉洲际电讯科技股份有限公司 | A kind of switching power circuit of detectable electric current |
| CN110888355A (en) * | 2019-11-21 | 2020-03-17 | 宁波麦度智联科技股份有限公司 | Low-power-consumption control circuit and control method for door sensor |
| CN114024529A (en) * | 2022-01-07 | 2022-02-08 | 南京易科腾信息技术有限公司 | Signal delay circuit, reset device and electronic equipment |
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