CN109100557B - Electronic active photoelectric current transformer - Google Patents
Electronic active photoelectric current transformer Download PDFInfo
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- CN109100557B CN109100557B CN201810888541.0A CN201810888541A CN109100557B CN 109100557 B CN109100557 B CN 109100557B CN 201810888541 A CN201810888541 A CN 201810888541A CN 109100557 B CN109100557 B CN 109100557B
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- 238000001514 detection method Methods 0.000 abstract description 14
- 238000004804 winding Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- 230000001681 protective effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/24—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices
- G01R15/241—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices using electro-optical modulators, e.g. electro-absorption
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
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Abstract
The invention discloses an electronic active photoelectric current transformer, which is characterized in that: the circuit comprises an A end and a B end of a 220V power supply end, rectifier diodes D1-D4, a diode D5, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, an adjustable resistor W1, a photoelectric coupler IC1, a voltage comparator IC2, an output end OUT1, an output end OUT2, and a positive electrode A1 and a negative electrode A2 of a 5V direct-current power supply; the invention provides an electronic active photoelectric current transformer which can be used for designing a power detection circuit of a zero-power-consumption standby circuit in an electric appliance to achieve current detection of the electronic appliance during direct-current shutdown zero-power-consumption standby.
Description
The technical field is as follows:
the invention relates to the field of current transformers, in particular to an electronic active photoelectric current transformer.
Background art:
the current transformer plays a wide role in the power system, and is one of the most basic detection devices for power system automation. The current transformer is an instrument for measuring by converting a large primary side current into a small secondary side current according to the electromagnetic induction principle. The current transformer is composed of a closed iron core and a winding. The primary winding of the device has few turns and is connected in a circuit of the current to be measured in series, and the current is converted according to the proportion. The transformer has the function of converting large current into standard small current in proportion so as to realize standardization and miniaturization of measuring instruments, protective equipment and automatic control equipment. The transformer may also be used to isolate high voltage systems to ensure personal and equipment safety. The conventional current transformer is mainly applied to measuring equipment of a high-voltage power system, and along with the development of electronic appliances, an electronic active photoelectric current transformer used in a power detection circuit for designing a zero-power-consumption standby circuit in the electric appliances is in urgent need.
The invention content is as follows:
the invention aims to provide an electronic active photoelectric current transformer which is reasonable in circuit structure and novel and simple in design.
The technical problem to be solved by the invention is realized by adopting the following technical scheme: electronic active photoelectric current transformer, its characterized in that: the circuit comprises an A end and a B end of a 220V power supply end, rectifier diodes D1-D4, a diode D5, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, an adjustable resistor W1, a photoelectric coupler IC1, a voltage comparator IC2, an output end OUT1, an output end OUT2, and a positive electrode A1 and a negative electrode A2 of a 5V direct-current power supply;
the A end of the 220V power supply end is respectively connected to the anode of a diode D1 in rectifying diodes D1-D4, the cathode of a diode D4 and the input 1 pin of the light-sensing coupler through a resistor R1, the B end of the 220V power supply end is respectively connected to the cathode of a diode D2 in rectifying diodes D1-D4, the anode of a diode D3 and the output 2 pin of the light-sensing coupler IC1, the cathodes of diodes D1 in rectifying diodes D1-D4 are respectively connected to the anode of a diode D1, the anode of a diode D1 and the cathode of a diode D1, the anodes of diodes D1 in rectifying diodes D1-D1 are respectively connected to the cathode of a diode D1 and the anode of a diode D1, the cathodes of diodes D1 in rectifying diodes D1-D1 are connected to the anode of a diode D1, the input 4 pin of the light-sensing coupler IC1 is respectively connected to the anode of a resistor R1, the DC power supply voltage comparator IC 365 and the DC power supply pin 1, an output pin 3 of the light sensing coupler IC1 is respectively connected to an anode of a diode D5, a pin 3 of a voltage comparator IC2 and one end of an adjustable resistor W1 through a resistor R2, a cathode of the diode D5 is connected to an output terminal OUT1, a cathode A2 of a 5V direct-current power supply is respectively connected to the other end of the adjustable resistor W1, the other end of the resistor R4 and a pin 4 of the voltage comparator IC2 through a resistor R3, a pin 2 of the voltage comparator IC2 is connected to a connecting line of the resistor R3 and the resistor R4, and a pin 1 is connected to an output terminal OUT2 through a resistor R5.
The invention has the beneficial effects that: the invention provides an electronic active photoelectric current transformer which can be used for designing a power detection circuit of a zero-power-consumption standby circuit in an electric appliance to achieve current detection of the electronic appliance during direct-current shutdown zero-power-consumption standby.
Description of the drawings:
FIG. 1 is a circuit diagram of the present invention;
the specific implementation mode is as follows:
in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
As shown in fig. 1, the electronic active photoelectric current transformer is characterized in that: the circuit comprises an A end and a B end of a 220V power supply end, rectifier diodes D1-D4, a diode D5, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, an adjustable resistor W1, a photoelectric coupler IC1, a voltage comparator IC2, an output end OUT1, an output end OUT2, and a positive electrode A1 and a negative electrode A2 of a 5V direct-current power supply;
the A ends are respectively connected to the anode of a diode D1, the cathode of a diode D4 and an input 1 pin of the light-sensitive coupler through a resistor R1 in rectifier diodes D1-D4, the B ends are respectively connected to the cathode of a diode D4, the anode of a diode D4 and the output 2 pin of the light-sensitive coupler IC 4 in rectifier diodes D1-D4, the cathode of a diode D4 in rectifier diodes D4-D4 is respectively connected to the anode of the diode D4, the anode of the diode D4 and the cathode of the diode D4, the anode of the diode D4 in rectifier diodes D4-D4 is respectively connected to the cathode of the diode D4 and the anode of the diode D4, the cathode of the diode D4 in rectifier diodes D4-D4 is connected to the anode of the diode D4, the input 4 pin of the light-sensitive coupler IC 4 is respectively connected to one end of the resistor R4, the anode of a voltage comparator IC 72 and the anode of a power supply IC 72V 3 pin of the light-sensitive coupler IC 4, and the output pin of the light-D4 is respectively connected to the output 3 pin of the light-D36, The voltage comparator IC2 is connected to a pin 3 of the voltage comparator IC2 and one end of the adjustable resistor W1 through a resistor R2, a cathode of the diode D5 is connected to the output end OUT1, a cathode A2 of the 5V direct-current power supply is connected to the other end of the adjustable resistor W1, the other end of the resistor R4 and a pin 4 of the voltage comparator IC2 through a resistor R3, a pin 2 of the voltage comparator IC2 is connected to a connecting line of the resistor R3 and the resistor R4, and a pin 1 is connected to the output end OUT2 through a resistor R5.
The working principle of the invention is as follows: the electronic active photoelectric current transformer is used in various circuits for load measurement together, load detection protection of various electronic appliances, zero-power-consumption standby turn-off detection of the electronic appliances and the like.
Firstly, the A end and the B end are connected in series in a power supply input circuit of a connected electronic appliance, the power supply of the connected electronic appliance is connected to 220V voltage, then the A1 end and the A2 end are connected to a +5V direct current power supply, at the moment, after the power is supplied to equipment of the connected electronic appliance, about 1.5-2V voltage is generated at the A end and the B end, the higher the power of the connected electronic appliance is, the higher the voltage is generated at the A end and the B end, at the moment, the voltage generated by a current detection circuit consisting of D1-D4 diodes at the A end and the B end is about 1.5-2V, the voltage is reduced and connected to a pin 1 of an IC1 light-sensitive coupler through an R1 resistor, a light emitting tube inside the IC1 light-sensitive coupler PC817 emits light, a light sensitive triode inside the IC1 light-sensitive coupler is conducted, about 1-3V voltage is output at a pin 4, and the output voltage of the 1-5V voltage is determined according to the power of the electronic appliance, the power of the connected electric appliance is high, 1-5V voltage output by a pin PC8173 of an IC1 light-sensitive coupler is divided into two paths, one path of voltage is output by a D5 diode and can be used for power detection of the connected electric appliance and overload detection of the connected circuit by a connection test instrument, after 0.1V voltage is set by a resistor R2 and a W1 adjustable resistor for 5-10V voltage output by the pin PC8173 of an IC1 light-sensitive coupler, the IC2 is a voltage comparator LM393, 2 pin voltage of the IC2 voltage comparator is divided by the resistor R4 and the resistor R3 to set the voltage to be 0.25V, the 3 pin voltage of the IC2 voltage comparator is higher than the 2 pin voltage of the IC2 voltage comparator, the 1 pin of the IC2 voltage comparator outputs high level and outputs OUT2 by the resistor R5, the zero power consumption electronic appliance can be used for zero standby detection of electronic appliances in a designed circuit, for example, when the connected electronic appliances are connected with left and right standby power of 3-15W, after the voltage generated at two ends of D1-D4 diodes at two ends of A and B is lower than 0.25V, the current generated at two ends of A and B is very small, so that an internal luminous tube of an IC1 photoelectric coupler can not emit light, the voltage output by a pin 3 of the IC1 photoelectric coupler is extremely low, the pin 3 voltage of the IC2 voltage comparator is lower than 2 pin voltage, and a pin 1 of the IC2 voltage comparator outputs low level, so that the circuit can be used in a power detection circuit of a zero-power standby circuit in an electrical appliance, and the current detection of the electronic appliance during the direct-current shutdown zero-power standby is achieved.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. Electronic active photoelectric current transformer, its characterized in that: the circuit comprises an A end and a B end of a 220V power supply end, rectifier diodes D1-D4, a diode D5, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, an adjustable resistor W1, a photoelectric coupler PC8173 IC1, a voltage comparator LM393 IC2, an output end OUT1, an output end OUT2, and a positive electrode A1 and a negative electrode A2 of a 5V direct-current power supply;
the A end of the 220V power supply end is respectively connected to the anode of a diode D1 in rectifier diodes D1-D4, the cathode of a diode D4 and the input 1 pin of a photocoupler PC8173 IC1 through a resistor R1, the B end of the 220V power supply end is respectively connected to the cathode of a diode D2 in rectifier diodes D1-D4, the anode of a diode D3 and the output 2 pin of the photocoupler PC8173 IC 3, the cathodes of diodes D3 in rectifier diodes D3-D3 are respectively connected to the anode of the diode D3, the anode of the diode D3 and the cathode of the diode D3, the anodes of the diode D3 in rectifier diodes D3-D3 are respectively connected to the cathode of the diode D3 and the anode of the diode D3, the cathodes of the input pin IC 4 in the photocoupler PC 3 are respectively connected to the anode of the diode D3 and the DC pin LM 365 of the power supply IC 393 through a resistor R393, the output 3 pins of the photocoupler PC8173 IC1 are respectively connected to the anode of the diode D5, the 3 pins of the voltage comparator LM393 IC2 and one end of the adjustable resistor W1 through the resistor R2, the cathode of the diode D5 is connected to the output end OUT1, the cathode A2 of the 5V direct-current power supply is respectively connected to the other end of the adjustable resistor W1, the other end of the resistor R4 and the 4 pins of the voltage comparator LM393 IC2 through the resistor R3, the 2 pin of the voltage comparator LM393 IC2 is connected to the connecting line of the resistor R3 and the resistor R4, and the 1 pin is connected to the output end OUT2 through the resistor R5.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810888541.0A CN109100557B (en) | 2018-08-07 | 2018-08-07 | Electronic active photoelectric current transformer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810888541.0A CN109100557B (en) | 2018-08-07 | 2018-08-07 | Electronic active photoelectric current transformer |
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| CN109100557A CN109100557A (en) | 2018-12-28 |
| CN109100557B true CN109100557B (en) | 2020-11-20 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008064539A (en) * | 2006-09-06 | 2008-03-21 | Mitsubishi Electric Corp | Electronic ammeter |
| CN101635547A (en) * | 2009-08-21 | 2010-01-27 | 常熟市天银机电有限公司 | Single-phase electric motor power consumption-free starter combined with overloading protector |
| CN202453405U (en) * | 2011-12-13 | 2012-09-26 | 合肥工业大学 | Alternating current detection circuit and automatic power-off circuit with power-off zero power consumption |
| CN202837873U (en) * | 2012-09-25 | 2013-03-27 | 美的集团股份有限公司 | Zero power standby circuit and corresponding electronic product |
| CN103675424A (en) * | 2012-08-30 | 2014-03-26 | 海尔集团公司 | Zero-crossing and standby zero consumption key detection circuit and washing machine |
| CN203595750U (en) * | 2013-11-18 | 2014-05-14 | 深圳麦格米特电气股份有限公司 | Zero-cross detection circuit for alternating-current power supply of gas water heater |
| CN106981784A (en) * | 2017-04-06 | 2017-07-25 | 六安市同心畅能电子科技有限公司 | A kind of energy-saving Zero-power-consumption standby Socket for computor circuit |
-
2018
- 2018-08-07 CN CN201810888541.0A patent/CN109100557B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008064539A (en) * | 2006-09-06 | 2008-03-21 | Mitsubishi Electric Corp | Electronic ammeter |
| CN101635547A (en) * | 2009-08-21 | 2010-01-27 | 常熟市天银机电有限公司 | Single-phase electric motor power consumption-free starter combined with overloading protector |
| CN202453405U (en) * | 2011-12-13 | 2012-09-26 | 合肥工业大学 | Alternating current detection circuit and automatic power-off circuit with power-off zero power consumption |
| CN103675424A (en) * | 2012-08-30 | 2014-03-26 | 海尔集团公司 | Zero-crossing and standby zero consumption key detection circuit and washing machine |
| CN202837873U (en) * | 2012-09-25 | 2013-03-27 | 美的集团股份有限公司 | Zero power standby circuit and corresponding electronic product |
| CN203595750U (en) * | 2013-11-18 | 2014-05-14 | 深圳麦格米特电气股份有限公司 | Zero-cross detection circuit for alternating-current power supply of gas water heater |
| CN106981784A (en) * | 2017-04-06 | 2017-07-25 | 六安市同心畅能电子科技有限公司 | A kind of energy-saving Zero-power-consumption standby Socket for computor circuit |
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| CN109100557A (en) | 2018-12-28 |
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Effective date of registration: 20240725 Address after: 052300 No. 0369 Fangbei East Street, Xinji City, Shijiazhuang City, Hebei Province Patentee after: HEBEI SHENKE ELECTRIC POWER CO.,LTD. Country or region after: China Address before: 237000 east side of jingsan Road, economic development zone, Lu'an City, Anhui Province (Science and Technology Innovation Center) Patentee before: LU'AN CITY TONGXINCHANGNENG ELECTRONIC TECHNOLOGY Co.,Ltd. Country or region before: China |
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