CN202794915U - Isolation-type zero standby power consumption circuit - Google Patents
Isolation-type zero standby power consumption circuit Download PDFInfo
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- CN202794915U CN202794915U CN2012202512072U CN201220251207U CN202794915U CN 202794915 U CN202794915 U CN 202794915U CN 2012202512072 U CN2012202512072 U CN 2012202512072U CN 201220251207 U CN201220251207 U CN 201220251207U CN 202794915 U CN202794915 U CN 202794915U
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- 230000002457 bidirectional effect Effects 0.000 claims abstract description 44
- 230000003287 optical effect Effects 0.000 claims abstract description 31
- 238000002955 isolation Methods 0.000 claims abstract description 26
- 238000001514 detection method Methods 0.000 claims abstract description 22
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 20
- 239000010703 silicon Substances 0.000 claims abstract description 20
- 239000003990 capacitor Substances 0.000 claims description 36
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 230000001419 dependent effect Effects 0.000 claims description 3
- 230000001052 transient effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
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Abstract
The utility model relates to an isolation-type zero standby power consumption circuit. The circuit comprises an alternating-current first input terminal and an alternating-current second input terminal; the first input terminal is connected with an input terminal of an isolation voltage-stabilized power supply circuit by a fuse; the second input terminal is connected with the other input terminal of the isolation voltage-stabilized power supply circuit by a bidirectional silicon controlled rectifier; the second input terminal is connected with a T2 electrode of the bidirectional silicon controlled rectifier and a power supply SW; a T1 electrode of the bidirectional silicon controlled rectifier is connected with an output terminal of a pulse transformer of a pulse trigger circuit; the other terminal of the power supply SW is connected with an anode of a diode of an optical coupler detection circuit by a resister R4; and a cathode of the diode of the optical coupler detection circuit is connected with a cathode of a diode of the pulse trigger circuit and connected with a control electrode of the bidirectional silicon controlled rectifier by a resistor R5. According to the utility model, a transformer and an optical coupler are used for electrical isolation of a heavy current and a light current, and the bidirectional silicon controlled rectifier is turned on and off such that an electric appliance consumes no power in a standby state, thereby achieving the purpose of energy saving. The isolation-type zero standby power consumption circuit can be widely used in the fields of household electrical appliances and industrial control.
Description
Technical Field
The utility model relates to a power control circuit, in particular to isolated standby zero-power circuit belongs to circuit technical field.
Background
Many electrical appliances are automatically shut down after the working program is finished, and are in a standby state, and wait for receiving a restart working instruction sent by the outside at any time, such as electrical appliances such as washing machines, dust collectors, coffee machines and the like, and are automatically shut down after the working program is finished, and are in a standby state, generally, the electrical appliances have certain standby power consumption in order to receive the restart working instruction sent by the outside at any time in the standby state, the standby power consumption of the current electrical appliances is generally 0.5W-3W, and European instructions require that the standby power consumption of the household electrical appliances is below 0.5W. As an improved form of a standby zero-power circuit, a zero-power circuit with a relay for controlling the on-off of an alternating current power supply is generally adopted at present, but because the relay contact is a mechanical contact, the mechanical action time is slow, the service life is short, meanwhile, alternating current strong current and weak current in an electric appliance are not electrically isolated, the influence of the alternating current strong current on the weak current is large, and the anti-interference capability of a system is not high.
Disclosure of Invention
The utility model aims to solve the technical problem that an isolated standby zero-power consumption circuit is provided, utilize bidirectional thyristor's break-make, thereby control electrical apparatus alternating current power supply's break-make, make electrical apparatus automatic shutdown after the operating procedure, zero-power consumption during the standby state, bidirectional thyristor does not have mechanical contact, the action time is fast, long service life, utilize transformer and opto-coupler simultaneously, the electrical isolation of alternating current strong current and weak current has been realized, the influence of strong current to weak current interference has been eliminated, the interference killing feature of the system has been improved.
In order to solve the technical problem, the utility model provides an isolated standby zero-power circuit, include
A first input Lin and a second input Nin of alternating current,
the first input end Lin is connected with one input end of the isolation voltage-stabilized power supply circuit through a Fuse,
the second input terminal Nin is connected with the other input terminal of the isolated voltage-stabilized power supply circuit through a bidirectional controllable silicon TR1,
the second input terminal Nin is connected with the T2 pole of the triac TR1 and one end of the power switch SW,
the T1 pole of the bidirectional controllable silicon TR1 is connected with one output end of a pulse transformer of the pulse trigger circuit,
the other end of the power switch SW is connected with the anode of a diode of the optical coupling detection circuit through a resistor R4,
the diode cathode of the optical coupling detection circuit is connected with the diode cathode of the pulse trigger circuit and is connected with the control electrode G of the bidirectional triode thyristor TR1 through a resistor R5,
an RC protection loop 2 is connected in parallel between the T2 pole and the T1 pole of the bidirectional triode thyristor TR1,
a trigger capacitor C2 is connected in parallel between the T1 pole and the control pole G of the bidirectional triode thyristor TR1,
a safety capacitor C1 and a piezoresistor RV are connected in parallel between the first input end Lin and the second input end Nin of the alternating current,
the isolated regulated power supply circuit includes an isolated DC output voltage Vcc and an analog ground GND.
Wherein,
a safety capacitor is connected in parallel between the first input end Lin of the alternating current and the second input end Nin
C1 and a varistor RV.
The RC protection loop comprises a resistor R3 and a capacitor C3 which are connected in series.
The second input end Nin is connected with the other input end of the isolation voltage-stabilized power supply circuit through a bidirectional controlled silicon TR1, the second input end Nin is connected with a T2 pole of the bidirectional controlled silicon TR1 and one end of a power switch SW, a T1 pole of the bidirectional controlled silicon TR1 is connected with one output end of a pulse transformer of a pulse trigger circuit,
the optical coupler detection circuit comprises an optical coupler IC1, a resistor R8, a resistor R9 and a filter capacitor C4, wherein a collector of the optical coupler IC1 is connected to direct-current output voltage Vcc through a resistor R8, and is connected with a first input/output port I/O1 through a resistor R9, the first input/output port I/O1 is connected with a filter capacitor C4 to a simulation ground GND at the same time, an emitter of the optical coupler IC1 is connected with the simulation ground GND, a diode anode of the optical coupler IC1 is connected to one end of a power switch SW through a resistor R4, and a diode cathode of the optical coupler IC1 is connected with a diode cathode of the pulse trigger circuit 4 and is connected with a control electrode G of the bidirectional thyristor TR1 through a resistor R5.
The pulse trigger circuit comprises an NPN triode Q1, a resistor R6, a resistor R7, a filter capacitor C4, a pulse transformer T4, a switch diode D1 and a switch diode D2, wherein the base of the NPN triode Q1 is connected with a filter capacitor C5 to an analog ground GND, and is connected with a second input/output end I/O2 through a resistor R7, the collector of the NPN triode Q1 is connected with a direct current output voltage Vcc through a resistor R6, the emitter of the NPN triode Q1 is connected with one end of a primary coil of a pulse transformer T4, the other end of the primary coil of the NPN transformer T4 is connected with the analog ground GND, a switch diode D1 is connected between two ends of the primary coil of the transformer T4 in parallel, one end of a secondary coil of the transformer T4 is connected with a diode cathode of the diode of the optocoupler IC1 after being connected with a switch diode D2 in a forward series connection, and is connected with a control electrode G of the triac TR, the other end of the secondary coil of the transformer T4 is connected with the T1 pole of the controllable silicon TR 1.
A trigger capacitor C2 is connected between the T1 pole of the bidirectional thyristor TR1 and the control pole G of the bidirectional thyristor TR 1.
The isolated regulated power supply circuit includes an isolated DC output voltage Vcc and an analog ground GND.
And a first input/output port I/O1 of the optical coupler detection circuit and a second input/output port I/O2 of the pulse trigger circuit are both connected to the MCU.
The isolation stabilized voltage supply circuit is a transformer step-down bridge type rectification stabilized voltage supply circuit or an isolation half-wave finishing stabilized voltage supply circuit.
The utility model has the advantages that:
the utility model discloses an isolated standby zero-power circuit utilizes bidirectional thyristor TR 1's break-make, thereby control electrical apparatus alternating current power supply's break-make, make electrical apparatus automatic shutdown after the working procedure, zero-power consumption during standby state reaches energy-conserving purpose, bidirectional thyristor does not have mechanical contact, the action reaction is fast, long service life utilizes transformer and opto-coupler simultaneously, the electrical isolation of alternating current strong electricity and weak current has been realized, the influence of strong current to weak current interference has been eliminated, the interference killing feature of system has been improved. The circuit has simple structure, reliable performance and low cost, and can be widely applied to the fields of household appliances, industrial control and the like.
Drawings
Fig. 1 is a schematic circuit diagram of the isolated standby zero power consumption circuit of the present invention.
Fig. 2 is the schematic diagram of the isolated standby zero-power circuit single chip microcomputer part of the present invention.
In the figure: 1. the circuit comprises an isolation voltage-stabilized power supply circuit, 2, an RC (resistor-capacitor) protection circuit, 3, an optical coupling detection circuit and 4, and a pulse trigger circuit.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Combine fig. 1 and fig. 2 to show, the utility model discloses an isolated standby zero-power consumption circuit mainly contains isolation constant voltage power supply circuit 1, ann rule electric capacity C1, piezo-resistor RV, Fuse, bidirectional thyristor TR1, RC protection return circuit 2, pulse trigger circuit 4, opto-coupler detection circuit 3, trigger electric capacity C9, resistance R4 and R5.
A safety capacitor C1 and a piezoresistor RV are connected in parallel between the first input end Lin and the second input end Nin of alternating current.
The first input end Lin and the second input end Nin of the two access ends of the isolation standby zero-power-consumption circuit are connected with alternating-current voltage, the first input end Lin is connected with one input end of the isolation voltage-stabilized power supply circuit 1 through a Fuse, and the second input end Nin is connected with the other input end of the isolation voltage-stabilized power supply circuit 1 through a bidirectional thyristor TR 1.
The second input end Nin is connected with one end of a power switch SW and a T2 pole of a bidirectional thyristor TR1, a T1 pole of the bidirectional thyristor TR1 is connected with one output end of a pulse transformer of the pulse trigger circuit 4, and the other end of the power switch SW is connected with a diode anode of the optical coupling detection circuit 3 through a resistor R4.
The optical coupler detection circuit 3 comprises an optical coupler IC1, a resistor R8, a resistor R9 and a filter capacitor C4, a collector of the optical coupler IC1 is connected to direct-current output voltage Vcc through a resistor R8, and is connected with a first input/output port I/O1 through a resistor R9, the first input/output port I/O1 is connected with a filter capacitor C4 to an analog ground GND, an emitter of the optical coupler IC1 is connected with the analog ground GND, a diode anode of the optical coupler IC1 is connected to one end of a power switch SW through a resistor R4, and a diode cathode of the optical coupler IC1 is connected with a diode cathode of the pulse trigger circuit 4 and is connected with a control electrode G of the bidirectional thyristor TR1 through a resistor R5.
The pulse trigger circuit 4 comprises an NPN triode Q1, a resistor R6, a resistor R7, a filter capacitor C4, a pulse transformer T4, a switch diode D1 and a switch diode D2, wherein the base electrode of the NPN triode Q1 is connected with the filter capacitor C5 to the analog ground GND, meanwhile, the current collector of an NPN triode Q1 is connected to a direct current output voltage Vcc through a resistor R6, the emitter of the NPN triode Q1 is connected with one end of a primary coil of a pulse transformer T4, the other end of the primary coil of the transformer T4 is connected with an analog ground GND, a switch diode D1 is connected between two ends of the primary coil of a transformer T4 in parallel, one end of a secondary coil of the transformer T4 is connected with a diode cathode of an optocoupler IC1 after being connected with a switch diode D2 in a forward series mode, is connected with a control electrode G of a bidirectional thyristor TR1 through a resistor R5, and the other end of the secondary coil of the transformer T4 is connected with a T1 electrode of the thyristor TR 1.
An RC protection circuit 2 is connected in parallel between a T2 pole and a T1 pole of the bidirectional controllable silicon TR1, and a trigger capacitor C2 is connected between a T1 pole of the bidirectional controllable silicon TR1 and a control pole G of the bidirectional controllable silicon TR 1. In the embodiment, the trigger capacitor C2 is a capacitor with the model of 0.1 muF/50V.
The isolation voltage-stabilized power supply circuit 1 is a transformer step-down bridge rectification voltage-stabilized power supply circuit consisting of a transformer T3, a bridge rectifier D, a voltage-stabilized integrated circuit IC2, a filter capacitor C6, a C7, a C8 and a C9, a direct-current output power supply Vcc and an analog ground Vss provide direct-current power supplies for a single-chip microcomputer MCU and other weak currents, and the direct-current output power supply Vcc and the analog ground Vss are electrically isolated from an alternating-current power supply because a primary side and a secondary side of the transformer T3 are electrically isolated. The isolation voltage-stabilizing power supply circuit 1 can also be an isolation rectification voltage-stabilizing circuit in other forms, such as an isolation half-wave finishing voltage-stabilizing power supply circuit (not shown in the present case). In the embodiment, the model of the bridge rectifier D is 2A/800V, the model of the voltage-stabilizing integrated circuit IC2 is 7805, the models of the electrolytic capacitor C7 and the electrolytic capacitor C9 are both 100 muF/16V, the models of the electrolytic capacitor C9 and the high-frequency filter capacitors C6 and C8 are both 0.1 muF/50V, and the direct-current output voltage is + 5V.
One end of the Fuse is connected to the first input end Lin, the other end of the Fuse.
The safety capacitor C1 is connected in parallel to two input terminals Lin and Nin of the alternating voltage after passing through the Fuse, and is mainly used for suppressing conducted Interference in Electromagnetic Interference (EMI) of the circuit, and simultaneously preventing personal safety and life from being endangered due to electric leakage of electronic equipment or electrification of a machine shell. In the embodiment, the type of the safety capacitor C1 is 0.22 muF/280 VAC.
The voltage dependent resistor RV is connected in parallel to two input ends Lin and Nin of the alternating voltage after passing through the Fuse, and mainly depends on the transient overvoltage protection function of the voltage dependent resistor RV to inhibit random and aperiodic transient surge abnormal overvoltage such as lightning overvoltage and operation overvoltage which may frequently occur at the input ends Lin and Nin, and protect the circuit from being damaged by the transient overvoltage. In this embodiment, the varistor RV is a varistor of type 14D 471.
When the electric appliance is automatically shut down after the working program is finished, is in a standby state and waits for receiving a working command of restarting sent from the outside at any time, a power switch SW in the isolated standby zero-power-consumption circuit is in an off state, the power switch SW is a key switch, namely after the power switch SW is pressed down, the switch is pressed down, and a contact is closed; when the power switch SW is released, the switch is bounced and the contacts are open. The power switch SW is in an off state, the bidirectional controllable silicon TR1 is turned off, and the power consumption of the whole circuit is zero.
When the electric appliance receives a restart working instruction sent by the outside, the voltage switch SW is pressed, the contact of the voltage switch SW is closed, due to the reverse action of a switch diode D2 of the pulse trigger circuit 4, the second input end Nin charges a trigger capacitor C2 through a resistor R4, a forward diode and a resistor R5 of the optocoupler detection circuit 3, when the charging voltage reaches the conducting voltage of a control electrode G and a T1 electrode of the bidirectional thyristor TR1, the bidirectional thyristor TR1 is conducted, a first input end Lin and a second input end Nin of alternating voltage generate direct current output voltage Vcc through an isolation voltage-stabilized power supply circuit 1 and a conducted bidirectional controllable TR1, the MCU obtains working voltage Vcc and starts to work after being reset immediately, the optocoupler detection circuit 3 is conducted due to the forward conduction of the diode of the optocoupler detection circuit 3, a collector of the optocoupler detection circuit 3 outputs a low level through an I/O1 port, and the MCU passes through a low level of an I/O1 port, when the power switch SW is pressed down, the single chip microcomputer sends out a high-level pulse signal at each ac zero crossing point (an ac zero crossing point detection circuit is not shown) through an I/O2 port, the triode of the pulse trigger circuit 4 is switched on at a high level, the pulse transformer T4 outputs the high-level pulse signal, the trigger capacitor C2 is charged through the forward switching diode D2 and the resistor R5, when the charging voltage reaches the control electrode G and T1 electrode conduction voltage of the triac TR1, the triac TR1 is continuously switched on, because the operation speed of the single chip microcomputer MCU is far higher than the release speed of the external human finger, before the voltage switch SW is bounced, the zero-crossing point trigger signal is obtained through the switching diode D2 cathode output of the pulse trigger circuit 4 between the control electrode G and T1 of the triac TR1, and the triac TR1 is still continuously switched on.
After the power switch SW is bounced, the contact of the power switch SW is disconnected, the bidirectional triode thyristor TR1 is still continuously conducted, the isolation stabilized voltage power supply circuit 1 still continuously outputs the direct-current voltage Vcc, at the moment, the diode of the optocoupler detection circuit 3 is not conducted, the triode of the optocoupler detection circuit is turned off, the I/O1 port outputs high level, the single-chip microcomputer MCU learns that the voltage switch SW is bounced, and meanwhile, the single-chip microcomputer MCU starts other complete working programs.
When the MCU finishes other working programs, the MCU is ready to automatically shut down, and when the MCU is in a standby state, the I/O2 port of the MCU outputs low level, the triode of the pulse trigger circuit 4 is cut off, the pulse transformer T4 does not output a zero-crossing point pulse trigger signal, a zero-crossing point pulse trigger circuit signal does not exist between the control electrode G of the bidirectional controllable silicon TR1 and the control electrode T1, the bidirectional controllable silicon TR1 is shut down, the isolation stabilized voltage power supply circuit 1 does not have input voltage subsequently, the DC output voltage Vcc of the isolation stabilized voltage power supply circuit is reduced to zero, the MCU stops working, the whole circuit is powered off, the electric appliance is automatically shut down, is in a standby state, consumes zero power, waits for receiving an instruction of next work restart from the outside. In the embodiment, the rectifier diode realizes electrical isolation with alternating current strong current due to the transformer T3 of the isolation voltage-stabilized power supply circuit 1, the pulse transformer T4 of the pulse trigger circuit 4 and the optical coupler IC1 of the optical coupler detection circuit 3, so that the influence of the strong current on the weak current interference is eliminated, and the anti-interference capability of the system is improved.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. In view of the numerous modifications and variations that may be made in accordance with the spirit of the invention, these modifications and variations are considered to be within the scope of the invention.
Claims (9)
1. An isolated standby zero power consumption circuit is characterized by comprising
A first input Lin and a second input Nin of alternating current,
the first input end Lin is connected with one input end of the isolation voltage-stabilized power supply circuit (1) through a fuse,
the second input end Nin is connected with the other input end of the isolation voltage-stabilized power supply circuit (1) through a bidirectional controllable silicon TR1,
the second input terminal Nin is connected with the T2 pole of the triac TR1 and one end of the power switch SW,
the T1 pole of the bidirectional controllable silicon TR1 is connected with one output end of a pulse transformer of the pulse trigger circuit (4),
the other end of the power switch SW is connected with the anode of a diode of the optical coupling detection circuit (3) through a resistor R4,
the diode cathode of the optical coupling detection circuit (3) is connected with the diode cathode of the pulse trigger circuit (4) and is connected with the control electrode G of the bidirectional triode thyristor TR1 through a resistor R5,
an RC protection loop (2) is connected in parallel between the T2 pole and the T1 pole of the bidirectional triode thyristor TR1,
a trigger capacitor C2 is connected in parallel between the T1 pole and the control pole G of the bidirectional triode thyristor TR1,
a safety capacitor C1 and a piezoresistor RV are connected in parallel between the first input end Lin and the second input end Nin of the alternating current,
the isolated regulated power supply circuit includes an isolated DC output voltage Vcc and an analog ground GND.
2. The isolated standby zero power consumption circuit as claimed in claim 1, wherein a safety capacitor C1 and a voltage dependent resistor RV are connected in parallel between the first input terminal Lin and the second input terminal Nin of the alternating current.
3. The isolated standby zero power consumption circuit according to claim 1, characterized in that the RC protection circuit (2) comprises a resistor R3 and a capacitor C3 connected in series.
4. The non-isolated standby zero power consumption circuit according to claim 1, wherein the second input terminal Nin is connected to another input terminal of the isolated regulated power supply circuit (1) through a bidirectional thyristor TR1, the second input terminal Nin is connected to the T2 pole of the bidirectional thyristor TR1 and one end of the power switch SW, the T1 pole of the bidirectional thyristor TR1 is connected to one output terminal of the pulse transformer of the pulse trigger circuit (4),
5. the isolated standby zero power consumption circuit according to claim 1, wherein the optical coupler detection circuit (3) comprises an optical coupler IC1, a resistor R8, a resistor R9 and a filter capacitor C4, a collector of the optical coupler IC1 is connected to the dc output voltage Vcc through a resistor R8, and is connected to the first input/output port I/O1 through a resistor R9, the first input/output port I/O1 is connected to a filter capacitor C4 to the analog ground GND, an emitter of the optical coupler IC1 is connected to the analog ground GND, a diode anode of the optical coupler IC1 is connected to one end of the power switch SW through a resistor R4, and a diode cathode of the optical coupler IC1 is connected to a diode cathode of the pulse trigger circuit (4) and is connected to the control electrode G of the triac TR1 through a resistor R5.
6. The isolated standby zero power consumption circuit according to claim 1, wherein the pulse trigger circuit (4) comprises an NPN transistor Q1, a resistor R6, a resistor R7, a filter capacitor C4, a pulse transformer T4, a switching diode D1 and a switching diode D2, a base of the NPN transistor Q1 is connected to a filter capacitor C5 to an analog ground GND and is connected to the second input/output port I/O2 through a resistor R7, a collector of the NPN transistor Q1 is connected to a dc output voltage Vcc through a resistor R6, an emitter of the NPN transistor Q1 is connected to one end of a primary coil of a pulse transformer T4, another end of the primary coil of the transformer T4 is connected to the analog ground GND, a switching diode D1 is connected in parallel between two ends of the primary coil of the transformer T4, and one end of a secondary coil of the transformer T4 is connected in series with a switching diode D2 and then to the diode cathode of the IC1 through an opto-resistor R5 and to the triac R2 A control pole G of the TR1 is connected, and the other end of the secondary coil of the transformer T4 is connected with a T1 pole of the controllable silicon TR 1.
7. The isolated standby zero power consumption circuit as claimed in claim 1, wherein a trigger capacitor C2 is connected between the T1 pole of the triac TR1 and the control pole G of the triac TR 1.
8. The isolated standby zero power consumption circuit according to claim 1, wherein the first input/output port I/O1 of the optical coupling detection circuit (3) and the second input/output port I/O2 of the pulse trigger circuit (4) are both connected to a single-chip MCU.
9. The isolated standby zero power consumption circuit according to claim 1, wherein the isolated regulated power supply circuit (1) is a transformer step-down bridge rectification regulated power supply circuit or an isolated half-wave finishing regulated power supply circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012202512072U CN202794915U (en) | 2012-05-31 | 2012-05-31 | Isolation-type zero standby power consumption circuit |
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| CN2012202512072U CN202794915U (en) | 2012-05-31 | 2012-05-31 | Isolation-type zero standby power consumption circuit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346754A (en) * | 2013-05-29 | 2013-10-09 | 天津罗斯诺普信息技术有限公司 | Filtering isolator |
| CN104901672A (en) * | 2015-05-26 | 2015-09-09 | 刘举柱 | Zero power consumption touch switch module circuit |
| CN107018615A (en) * | 2017-05-31 | 2017-08-04 | 田涛 | A kind of electronic switch of micro-current control |
| CN112235892A (en) * | 2020-09-27 | 2021-01-15 | 中国科学院上海光学精密机械研究所 | Multifunctional pulse xenon lamp power supply based on PLC control |
| CN113267097A (en) * | 2021-04-23 | 2021-08-17 | 安徽东风机电科技股份有限公司 | Electric fuse firing function monitoring circuit |
| CN118199416A (en) * | 2024-03-29 | 2024-06-14 | 煤炭科学技术研究院有限公司 | AC power supply parallel synchronization system, control method and device and electronic equipment |
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2012
- 2012-05-31 CN CN2012202512072U patent/CN202794915U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346754A (en) * | 2013-05-29 | 2013-10-09 | 天津罗斯诺普信息技术有限公司 | Filtering isolator |
| CN104901672A (en) * | 2015-05-26 | 2015-09-09 | 刘举柱 | Zero power consumption touch switch module circuit |
| CN104901672B (en) * | 2015-05-26 | 2017-09-29 | 六安市同心畅能电子科技有限公司 | Zero-power soft-touch control modular circuit |
| CN107018615A (en) * | 2017-05-31 | 2017-08-04 | 田涛 | A kind of electronic switch of micro-current control |
| CN107018615B (en) * | 2017-05-31 | 2024-01-30 | 惠州祺瑞电工有限公司 | Micro-current controlled electronic switch |
| CN112235892A (en) * | 2020-09-27 | 2021-01-15 | 中国科学院上海光学精密机械研究所 | Multifunctional pulse xenon lamp power supply based on PLC control |
| CN113267097A (en) * | 2021-04-23 | 2021-08-17 | 安徽东风机电科技股份有限公司 | Electric fuse firing function monitoring circuit |
| CN113267097B (en) * | 2021-04-23 | 2023-01-17 | 安徽东风机电科技股份有限公司 | Electric fuse firing function monitoring circuit |
| CN118199416A (en) * | 2024-03-29 | 2024-06-14 | 煤炭科学技术研究院有限公司 | AC power supply parallel synchronization system, control method and device and electronic equipment |
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