CN206270864U - A kind of reset circuit - Google Patents
A kind of reset circuit Download PDFInfo
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- CN206270864U CN206270864U CN201621137738.3U CN201621137738U CN206270864U CN 206270864 U CN206270864 U CN 206270864U CN 201621137738 U CN201621137738 U CN 201621137738U CN 206270864 U CN206270864 U CN 206270864U
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Abstract
The utility model is related to a kind of reset circuit, including voltage comparator circuit, the first input end of the voltage comparator circuit and the second input receive the first input voltage and reference voltage respectively, first input voltage is obtained according to the supply voltage, the voltage comparator circuit is used to compare first input voltage and the size of the reference voltage, and comparison voltage is exported with the output end of the voltage comparator circuit；On-off circuit, is connected between the output end of the voltage comparator circuit, supply voltage, earth terminal and reseting controling signal end, for controlling the reseting controling signal end to be coupled to the supply voltage or being coupled to the earth terminal according to the comparison voltage.The utility model proposes reset circuit can effectively ensure that micro-control unit have abundance time carry out reset operation, it is prevented effectively from the problem that the micro-control unit causes to crash because resetting time is too short, it is widely used in various electronic, with good practicality.
Description
Technical field
The utility model is related to field of circuit technology, more particularly to a kind of reset circuit.
Background technology
Reset circuit is a kind of important circuit in circuit field.Common, the basic functional principle of reset circuit is
The characteristic that the characteristic that can not be mutated using inductive current can not be mutated come the current-rising-rate of suppression device, using capacitance voltage come
The voltage build-up rate of suppression device, so as to realize entering electric current and voltage the effect of row buffering regulation.
Reset circuit is widely applied in many electronic and electrical equipments in recent years due to its unique advantage.Example
Such as, in air-conditioning in actual use, due to there may be the voltage wave of misoperation (such as high-speed switch machine) or power network
Dynamic larger problem, this will cause the electricity of power end not discharge and carries out the problem of quick charge.Namely the electricity on reset pin
Pressure is not discharged and starts power up again, and this will cause the resetting time of the reset pin too short, thus with the reset pin phase
Micro-control unit (MCU) resetting time it is also too short, cause the micro-control unit (MCU) crash, have impact on to air conditioner
Normal control, to the normal using inconvenience is brought of user, reduce the overall experience of user.
Utility model content
Based on this, the purpose of this utility model is to provide one kind and can effectively protect micro-control unit, is prevented effectively from this micro-
Control unit causes the reset circuit of deadlock problem because resetting time is too short.
The utility model proposes a kind of reset circuit, the reset circuit includes：
Voltage comparator circuit, connects supply voltage, the first input end of the voltage comparator circuit and the second input point
The first input voltage and reference voltage are not received, and first input voltage is obtained according to the supply voltage, the voltage
Comparison circuit is used to compare first input voltage and the size of the reference voltage, with the defeated of the voltage comparator circuit
Go out end output comparison voltage；
On-off circuit, is connected to output end, supply voltage, earth terminal and the control letter that resets of the voltage comparator circuit
Between number end, for controlling the reseting controling signal end to be coupled to the supply voltage or be coupled to according to the comparison voltage
The earth terminal.
The reset circuit, wherein, the on-off circuit includes first switch circuit and second switch circuit, wherein institute
The first control end, first end and the second end for stating first switch circuit connect the output of the voltage comparator circuit respectively
End, the supply voltage and the reseting controling signal end, the second control end of the second switch circuit, first end and
Second end connects the output end, the reseting controling signal end and the earth terminal of the voltage comparator circuit respectively；
When first input voltage is more than the reference voltage, the voltage comparator circuit exports the first level, control
The first switch circuit turn-on and the second switch circuit is made to disconnect so that the reseting controling signal end be coupled to it is described
Supply voltage；
When first input voltage is less than the reference voltage, the voltage comparator circuit exports second electrical level, control
The second switch circuit turn-on and affiliated first switch circuit is made to disconnect so that the reseting controling signal end be coupled to it is described
Earth terminal.
The reset circuit, wherein, connect an electric capacity between the reseting controling signal end and the earth terminal.
The reset circuit, wherein, the voltage comparator circuit includes a comparator, and described the first of the comparator is defeated
Enter end and second input receives first input voltage and the reference voltage respectively.
The reset circuit, wherein, the first switch circuit and the second switch circuit are triode, described
First switch circuit is the first triode, and the second switch circuit is the second triode.
The reset circuit, wherein, first triode includes the first colelctor electrode, the first emitter stage and described first
Control end, first control end is connected with the output end of the voltage comparator circuit, first colelctor electrode with it is described
Supply voltage is connected, and first emitter stage is connected with the reseting controling signal end.
The reset circuit, wherein, second triode includes the second colelctor electrode, the second emitter stage and the second control
End, second control end is connected with the output end of the voltage comparator circuit, second colelctor electrode and the ground connection
End is connected, and second emitter stage is connected with the reseting controling signal end.
The reset circuit, wherein, the reset circuit also includes：
Bleeder circuit, connects the supply voltage, and the bleeder circuit includes first resistor and second resistance, and described the
One end of one resistance and the second resistance is connected with the supply voltage, the other end of the first resistor and the electricity
The first input end of comparison circuit is pressed to be connected, described the of the other end of the second resistance and the voltage comparator circuit
Two inputs are connected.
The reset circuit, wherein, the voltage comparator circuit also includes：
Bi-directional voltage stabilizing diode, the bi-directional voltage stabilizing diode A ends ground connection, the K ends of the bi-directional voltage stabilizing diode with
Second input in the voltage comparator circuit is connected, for providing the reference voltage；
3rd resistor, one end ground connection of the 3rd resistor, the other end of the 3rd resistor is more electric with the voltage ratio
The first input end in road is connected, and the partial pressure in the 3rd resistor is first input voltage.
The reset circuit, wherein, the reseting controling signal end connects an electronic component, and the electronic component includes single
Piece machine.
The utility model proposes reset circuit can effectively ensure that micro-control unit have abundance time carry out reset behaviour
Make, be prevented effectively from the problem that the micro-control unit causes to crash because resetting time is too short, can be widely applied for various electricity
In sub- device element, with good practicality.
Brief description of the drawings
Fig. 1 is the module diagram of the reset circuit that the utility model first embodiment is proposed；
Fig. 2 is the module diagram of the reset circuit that the utility model second embodiment is proposed；
Fig. 3 is the overall structure diagram of the reset circuit that the utility model second embodiment is proposed；
Fig. 4 is the schematic enlarged-scale view of bleeder circuit in the reset circuit that the utility model second embodiment is proposed；
Fig. 5 is the schematic enlarged-scale view of voltage comparator circuit in the reset circuit that the utility model second embodiment is proposed；
Fig. 6 is the schematic enlarged-scale view of the reset circuit breaker in middle circuit that the utility model second embodiment is proposed.
Specific embodiment
For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings
State.First-selected embodiment of the present utility model is given in accompanying drawing.But, the utility model can come real in many different forms
It is existing, however it is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments is made to public affairs of the present utility model
Open content more thorough comprehensive.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with technology of the present utility model is belonged to
The implication that the technical staff in domain is generally understood that is identical.It is herein to be in term used in the description of the present utility model
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " include
The arbitrary and all of combination of one or more related Listed Items.
Fig. 1 is referred to, Fig. 1 is the module diagram of the reset circuit that the utility model first embodiment is proposed, this practicality
A kind of new reset circuit of offer, the reset circuit includes voltage comparator circuit 20 and on-off circuit 30, the voltage ratio
It is mainly used in the size by comparing the first input voltage and reference voltage compared with circuit 20, with the voltage comparator circuit 20
Output end 201 exports comparison voltage, and the on-off circuit 30 is used for according to the comparison voltage control control letter that resets
Number end is coupled to the supply voltage or is coupled to the earth terminal.
Fig. 2 to Fig. 6 is referred to, Fig. 2 is the module diagram of the reset circuit that the utility model second embodiment is proposed, figure
3 is the overall structure diagram of the reset circuit that the utility model second embodiment is proposed, Fig. 4 is implemented for the utility model second
The schematic enlarged-scale view of bleeder circuit in the reset circuit that example is proposed, Fig. 5 is the reset electricity that the utility model second embodiment is proposed
The schematic enlarged-scale view of voltage comparator circuit in road, Fig. 6 is the reset circuit breaker in middle electricity that the utility model second embodiment is proposed
The schematic enlarged-scale view on road, the reset circuit includes bleeder circuit 10, voltage comparator circuit 20 and on-off circuit 30, wherein institute
State voltage comparator circuit 20 to be connected with the bleeder circuit 10 and the on-off circuit 30 respectively, specifically, actually used
During, due to the voltage comparator circuit 20 include a comparator 21, the comparator 21 include first input end 211 and
Second input 212, because the first input end 211 is joined directly together with one end of 3rd resistor R3, and 3rd resistor R3
Other end ground connection, therefore input voltage at the first input end 211 of the comparator 21 is the 3rd resistor R3
On partial pressure, herein we the partial pressure on the 3rd resistor R3 is designated as the first input voltage.Additionally, the institute of the comparator 21
The second input 212 is stated to be joined directly together with the K ends of bi-directional voltage stabilizing diode Z1, and the A ends of bi-directional voltage stabilizing diode Z1 are grounded,
Therefore the input voltage on second input 212 of the comparator 21 is the voltage of bi-directional voltage stabilizing diode Z1.By
In the exclusive characteristics of bi-directional voltage stabilizing diode Z1, the magnitude of voltage on bi-directional voltage stabilizing diode Z1 remains constant,
Therefore the partial pressure on bi-directional voltage stabilizing diode Z1 can be designated as reference voltage by us.In actual applications, the voltage ratio
Be mainly the size by the comparator 21 come the first input voltage described in comparing and the reference voltage compared with circuit 20, with
Comparison voltage is exported at the output end 201 of the voltage comparator circuit 20.
Further, since the institute in the comparison voltage input 301 of the on-off circuit 30 and the voltage comparator circuit 20
State output end 201 to be connected, the voltage comparator circuit 20 is exported comparison voltage to the switch electricity by the output end 201
The comparison voltage input 301 on road 30.In the present embodiment, the on-off circuit 30 is mainly used according to the institute for receiving
Comparison voltage is stated to control the reseting controling signal end to be coupled to the supply voltage or be coupled to the earth terminal, it is and described
What reseting controling signal end was connected is an electronic component, when the reseting controling signal end is coupled to the supply voltage, should
Electronic component normal work under the supply of the supply voltage；When the reseting controling signal end is coupled to the earth terminal
When, the electronic component is stopped.At the same time, an electric capacity is connected between the reseting controling signal end and the earth terminal
C, when the reseting controling signal end is coupled to the supply voltage, because one end of electric capacity C is grounded, therefore the now electricity
Hold and be loaded with a voltage on C, now electric capacity C carries out charging operation；When the reseting controling signal end is coupled to the ground connection
During end, because one end of electric capacity C is similarly grounded, now no on-load voltage on electric capacity C, now electric capacity C can be with profit
With the electric energy for being stored before for the electronic component is powered, used as stand-by power supply, be further ensured that the electronics
The normal work of element.Herein it should be noted that in the present embodiment, the electronic component can be single-chip microcomputer.
At the same time, in order to further improve the resistance to overturning of the reset circuit and preferably protect the reset
Circuit, for the present embodiment, is also provided with a bleeder circuit 10 in the reset circuit, and the bleeder circuit 10 includes
One end of first resistor R1 and second resistance R2, the first resistor R1 and the second resistance R2 are electric with the power supply
Pressure VCC is connected, and the supply voltage VCC is responsible for whole reset circuit and provides electric energy.Additionally, the first resistor R1's is another
End is connected with the first input end 211 of the comparator 21, the other end and the comparator 21 of the second resistance R2
Second input 212 be connected.It is apparent that the first resistor R1 mainly coordinates the bi-directional voltage stabilizing diode Z1 to carry out
Partial pressure, the second resistance R2 mainly coordinates the 3rd resistor R3 to carry out partial pressure.
In the present embodiment, the on-off circuit 30 includes first switch circuit and second switch circuit, wherein described
First control end of first switch circuit, first end and the second end connect the output of the voltage comparator circuit 20 respectively
The end 201, supply voltage and the reseting controling signal end, the second control end, the first end of the second switch circuit
And second end connect the output end 201, the reseting controling signal end and the institute of the voltage comparator circuit 20 respectively
Earth terminal is stated, the first switch circuit is the first triode Q1, the first triode Q1 includes that the first base stage B1 is (described
First control end), (described first opens for the first colelctor electrode C1 (first end of the first switch circuit) and the first emitter E 1
Second end on powered-down road)；The second switch circuit is the second triode Q2, the second triode Q2 includes the second base stage
B2 (second control end), the second colelctor electrode C2 (the second end of the second switch circuit) and (institute of the second emitter E 2
State the first end of second switch circuit).Specifically, the first base stage B1 connection voltage ratios of the first triode Q1 are more electric
The output end 201 on road 20, the first colelctor electrode C1 of the first triode Q1 is connected with the supply voltage, and described first
First emitter E 1 of triode Q1 is connected with the reseting controling signal end.The second base stage B2 of the second triode Q2
(namely second control end) connects the output end 201 of the voltage comparator circuit 20, the second colelctor electrode C2 with it is described
Earth terminal is connected, and second emitter E 2 is connected with the reseting controling signal end.Herein it should be noted that in this implementation
In example, the first triode Q1 is common triode with the second triode Q2, wherein the first triode Q1 is
NPN type triode, the second triode Q2 is PNP type triode, as what is expanded, according to actual conditions needs, and described the
One triode Q1 can also be PNP type triode, and the second triode Q2 can also be NPN type triode.
By the comparison voltage that the comparison voltage input 301 of the on-off circuit 30 is received is by the electricity
Pressure comparison circuit 20 compares the voltage exported after treatment.Wherein, for the voltage comparison circuit 20, institute is worked as
The first input voltage (voltage on 3rd resistor R3) is stated more than the reference voltage (voltage on bi-directional voltage stabilizing diode Z1)
When, first triode is now controlled by the first base stage B1 (namely first control end) of the first triode Q1
Q1 is turned on and is controlled the reseting controling signal end to be coupled to the supply voltage VCC, now with the reseting controling signal end phase
Electronic component (single-chip microcomputer) even resets successfully normal work again；When the first input voltage (electricity on 3rd resistor R3
Pressure) less than the reference voltage (voltage on bi-directional voltage stabilizing diode Z1) when, now by the institute of the second triode Q2
The second base stage B2 (the second control end) is stated to control the second triode Q2 to turn on and control the reseting controling signal end to couple
To the earth terminal, the electronic component (single-chip microcomputer) being now connected with the reseting controling signal end resets successfully in closing shape
State.
The operation principle of the reset circuit is described in greater detail below in conjunction with a specific example.Example
Such as, during the use of air-conditioning, because voltage can produce rapid fluctuations sometimes, or sometimes due to some of user are incorrect
Operation (such as rapid switching on and shutting down), easily cause the micro-control unit (MCU) being arranged in air-conditioning circuit and do not fallen electricity and fast
Speed charges, and the resetting time of micro-control unit not enough, easily causes the problem of MCU deadlocks.The utility model proposes one kind answer
Position circuit, the reset circuit includes voltage comparator circuit 20 and on-off circuit 30, in practical work process, when air-conditioning is opened
When, on the supply voltage electricity, in the present embodiment, if during normal work the supply voltage rated value be 5V, now by
In electricity on supply voltage, the voltage on the 3rd resistor R3 in the voltage comparator circuit 20 gradually increases, and institute
The voltages keep constant on bi-directional voltage stabilizing diode Z1 is stated, in the present embodiment, if being carried in the bi-directional voltage stabilizing diode Z1
On voltage constant be 3.5V, when the voltage on the 3rd resistor R3 is risen to more than 3.5V by 0V (for example, 3.6V), this
When due to first input voltage (voltage on the 3rd resistor R3) be more than the reference voltage (bi-directional voltage stabilizing two
Voltage on pole pipe Z1), the comparison voltage of the now output of the comparator 21 is the first level, and first level is height
Level voltage, now the first triode Q1 conducting, the second triode Q2 is closed, the reseting controling signal end (
That is RESET ends) the supply voltage VCC is coupled to, the MCU being connected with the reseting controling signal end resets successfully, accesses
The normal working voltage of 5.0V restarts work.
When air-conditioning is closed, the supply voltage is powered off, now the described 3rd in the voltage comparator circuit 20
Voltage on resistance R3 is gradually reduced, the voltages keep constant on bi-directional voltage stabilizing diode Z1 described in two.Likewise, due to loading
Voltage constant on the bi-directional voltage stabilizing diode Z1 is 3.5V, when the voltage on the 3rd resistor R3 is by more than 3.5V's
When value gradually decreases to the value less than 3.5V, now because first input voltage (voltage on the 3rd resistor R3) is small
In the reference voltage (voltage on the bi-directional voltage stabilizing diode Z1), the comparing of the now output of the comparator 21 is electric
It is second electrical level to press, and the second electrical level is low level voltage, and now the first triode Q1 is closed, second triode
Q2 is turned on, and the reseting controling signal end (namely RESET ends) is coupled to the earth terminal, with reseting controling signal end phase
MCU even resets successfully, and now the MCU does not work.
Herein it should be noted that being additionally provided with an electric capacity C, the two ends difference of the electric capacity in the outside of the on-off circuit 30
Connect the earth terminal and the reseting controling signal end.When the reset circuit the supply voltage in an ON state
When (namely air-conditioning be in normal operating condition), now due to being loaded with voltage electric capacity C on, electric capacity C is in charged state.
When the supply voltage of the reset circuit is closed (namely air-conditioning is closed).Now electric capacity C
Upper no on-load voltage, due to the electric energy that is stored with before electric capacity C, now electric capacity C can be in case of need and institute
State the connected single-chip microcomputer in reseting controling signal end and electric energy is provided, it is ensured that the normal work of single-chip microcomputer.
In sum, due to being provided with voltage comparator circuit 20 and on-off circuit 30 in the reset circuit, in practical application
Described in voltage comparator circuit 20 due to exist a voltage ratio compared with process, be required for carrying out electricity when circuit is turned on and off
Comparison voltage is just exported after the comparing of pressure, controls the reseting controling signal end to be coupled to the power supply according to the comparison voltage
Voltage or the earth terminal.The voltage comparator circuit 20 actually extends the resetting time of MCU, effectively prevent MCU because
Resetting time is too short and cause it is short-circuit the problems such as.
The utility model proposes can effectively protect micro-control unit, be prevented effectively from the micro-control unit because reset when
Between it is too short and cause the problem for crashing, in can be widely applied for various electronic device, with good practicality.
Embodiment described above only expresses several embodiments of the present utility model, and its description is more specific and detailed,
But therefore can not be interpreted as the limitation to the utility model the scope of the claims.It should be pointed out that common for this area
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of reset circuit, it is characterised in that the reset circuit includes：
Voltage comparator circuit, connects supply voltage, and the first input end of the voltage comparator circuit and the second input connect respectively
Receive the first input voltage and reference voltage, first input voltage is obtained according to the supply voltage, the voltage ratio compared with
Circuit is used to compare first input voltage and the size of the reference voltage, with the output end of the voltage comparator circuit
Output comparison voltage；
On-off circuit, is connected to output end, supply voltage, earth terminal and the reseting controling signal end of the voltage comparator circuit
Between, for being controlled the reseting controling signal end to be coupled to the supply voltage or described in being coupled to according to the comparison voltage
Earth terminal.
2. reset circuit according to claim 1, it is characterised in that the on-off circuit include first switch circuit and
Second switch circuit, wherein the first control end of the first switch circuit, first end and the second end connect the electricity respectively
The output end, the supply voltage and the reseting controling signal end of comparison circuit are pressed, the second switch circuit
Second control end, first end and the second end connect the output end of the voltage comparator circuit, reset control respectively
Signal end and the earth terminal；
When first input voltage is more than the reference voltage, the voltage comparator circuit exports the first level, controls institute
State first switch circuit turn-on and the second switch circuit disconnects, so that the reseting controling signal end is coupled to the power supply
Voltage；
When first input voltage is less than the reference voltage, the voltage comparator circuit exports second electrical level, controls institute
State second switch circuit turn-on and affiliated first switch circuit disconnects, so that the reseting controling signal end is coupled to the ground connection
End.
3. reset circuit according to claim 1, it is characterised in that the reseting controling signal end and the earth terminal it
Between connect an electric capacity.
4. reset circuit according to claim 1, it is characterised in that the voltage comparator circuit includes a comparator, institute
The first input end and second input for stating comparator receive first input voltage and the base respectively
Quasi- voltage.
5. reset circuit according to claim 2, it is characterised in that the first switch circuit and the second switch
Circuit is triode, and the first switch circuit is the first triode, and the second switch circuit is the second triode.
6. reset circuit according to claim 5, it is characterised in that first triode includes the first colelctor electrode, the
One emitter stage and first control end, first control end are connected with the output end of the voltage comparator circuit,
First colelctor electrode is connected with the supply voltage, and first emitter stage is connected with the reseting controling signal end.
7. reset circuit according to claim 5, it is characterised in that second triode includes the second colelctor electrode, the
Two emitter stages and the second control end, second control end are connected with the output end of the voltage comparator circuit, described
Second colelctor electrode is connected with the earth terminal, and second emitter stage is connected with the reseting controling signal end.
8. according to any described reset circuit of claim 6 or 7, it is characterised in that the reset circuit also includes：
Bleeder circuit, connects the supply voltage, and the bleeder circuit includes first resistor and second resistance, first electricity
Resistance and one end of the second resistance are connected with the supply voltage, the other end of the first resistor and the voltage ratio
The first input end compared with circuit is connected, and the other end of the second resistance is defeated with described the second of the voltage comparator circuit
Enter end to be connected.
9. reset circuit according to claim 8, it is characterised in that the voltage comparator circuit also includes：
Bi-directional voltage stabilizing diode, the bi-directional voltage stabilizing diode A ends ground connection, the K ends of the bi-directional voltage stabilizing diode with it is described
Second input in voltage comparator circuit is connected, for providing the reference voltage；
3rd resistor, one end ground connection of the 3rd resistor, in the other end of the 3rd resistor and the voltage comparator circuit
The first input end be connected, partial pressure in the 3rd resistor is first input voltage.
10. reset circuit according to claim 9, it is characterised in that the reseting controling signal end connects electronics unit
Part, the electronic component includes single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621137738.3U CN206270864U (en) | 2016-10-19 | 2016-10-19 | A kind of reset circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621137738.3U CN206270864U (en) | 2016-10-19 | 2016-10-19 | A kind of reset circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206270864U true CN206270864U (en) | 2017-06-20 |
Family
ID=59038242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621137738.3U Active CN206270864U (en) | 2016-10-19 | 2016-10-19 | A kind of reset circuit |
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| CN (1) | CN206270864U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332683A (en) * | 2019-08-09 | 2019-10-15 | 宁波奥克斯电气股份有限公司 | A kind of reset circuit, control circuit and air conditioner |
| CN111090566A (en) * | 2019-12-27 | 2020-05-01 | 亚瑞源科技（深圳）有限公司 | MCU operating condition monitoring circuit |
| CN111641406A (en) * | 2020-06-30 | 2020-09-08 | 湖南中车时代通信信号有限公司 | Power-off restart automatic control circuit |
-
2016
- 2016-10-19 CN CN201621137738.3U patent/CN206270864U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332683A (en) * | 2019-08-09 | 2019-10-15 | 宁波奥克斯电气股份有限公司 | A kind of reset circuit, control circuit and air conditioner |
| CN111090566A (en) * | 2019-12-27 | 2020-05-01 | 亚瑞源科技（深圳）有限公司 | MCU operating condition monitoring circuit |
| CN111090566B (en) * | 2019-12-27 | 2022-07-01 | 亚瑞源科技（深圳）有限公司 | MCU operating condition monitoring circuit |
| CN111641406A (en) * | 2020-06-30 | 2020-09-08 | 湖南中车时代通信信号有限公司 | Power-off restart automatic control circuit |
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