CN2137831Y - Telecontrol fully-automatic protection device for switch-off of domestic electric appliance - Google Patents
Telecontrol fully-automatic protection device for switch-off of domestic electric appliance Download PDFInfo
- Publication number
- CN2137831Y CN2137831Y CN 92238791 CN92238791U CN2137831Y CN 2137831 Y CN2137831 Y CN 2137831Y CN 92238791 CN92238791 CN 92238791 CN 92238791 U CN92238791 U CN 92238791U CN 2137831 Y CN2137831 Y CN 2137831Y
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- CN
- China
- Prior art keywords
- circuit
- shutdown
- protective circuit
- switch
- socket
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- Expired - Fee Related
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Abstract
The utility model relates to a telecontrol fully-automatic protection device for switch-off of domestic electric appliance, comprising a socket CZ, a push-button switch a which is connected with the socket CZ in series and a control circuit board which is arranged in the socket. The control circuit comprises a control power supply circuit, an outer power supply voltage sampling circuit, a load current sampling circuit, an over voltage shutdown protective circuit, an over current shutdown protective circuit, a shutdown signal detecting circuit, a time delay switch off circuit, a reference voltage circuit and a relay switching circuit. The utility model is not only capable of determining whether power cut to shut down the domestic electric appliance through detecting the size of the load current, but also additionally provided with the over voltage shutdown protective circuit and the over current shutdown protective circuit, and the power consumption by self is minimal. In addition, when the utility model is at static, the telecontrol fully-automatic protection device for switch-off of domestic electric appliance has no power consumption.
Description
The utility model relates to a kind of remote control household electrical appliances and automatically closes motor protector, belongs to a kind of protective device of home appliance.
Along with progress of science and technology, the remote control household electrical appliances are increasing, as remote control colour TV set, remote control video tape recorder, remote control air conditioner etc., particularly remote control colour TV set has arrived the degree of popularizing especially, but remote control household electrical appliances major part not really shutdown when remote controller makes it be in " shutdown " state nowadays, but be in " time-out " state, control circuit is still in work, not only waste electric energy for a long time in the past, and can influence the life-span of colour TV.At this problem; more existing technical solutions; but all also have such or such defective: if any need infrared receiver; that have even need infrared transmitter; although what have is to judge whether colour TV shuts down and determine whether cut off the electricity supply by detecting the load current size; but circuit is too complicated, and does not have extra overvoltage, overcurrent shutdown protection defencive function mostly.
The purpose of this utility model provides a kind of remote control household electrical appliances with overvoltage, overcurrent shutdown protection automatically to close motor protector for the defective that overcomes above-mentioned prior art to society with regard to being.
The utility model is achieved in that the remote control household electrical appliances automatically close motor protector and are made up of socket CZ, the push-button switch AN that is connected in series with socket CZ and the control circuit board that is installed in the socket, it is characterized in that described control circuit is made up of control power circuit, external power voltage sample circuit, load current sample circuit, overvoltage shutdown protective circuit, overcurrent shutdown protective circuit, off signal testing circuit, time-delay shutdown circuit, reference voltage circuit and relay switching circuit; The input termination switch AN of control power circuit, output take over and press shutdown protective circuit, overcurrent shutdown protective circuit, off signal testing circuit, time-delay shutdown circuit, relay switching circuit and reference voltage circuit, for they provide working power; External power voltage sampling circuit input termination switch AN, output take over and press shut down the comparison input of protective circuit and the benchmark input end of off signal testing circuit; Load current sample circuit input combination hub, output are taken over the comparison input of stream shutdown protective circuit and off signal testing circuit; The comparison input of the output termination time-delay shutdown circuit of off signal testing circuit; The benchmark input end of overvoltage shutdown protective circuit, overcurrent shutdown protective circuit, time-delay shutdown circuit connects reference voltage circuit, and three's output is with succeeding appliance switch circuit; Relay switching circuit is connected in series with reference voltage circuit.
The utility model compared with prior art; not only determine whether cutting off the electricity supply and shut down by detection load current size; it is an independently outer relay part; (socket type) easy to use, but also increased overvoltage, overcurrent shutdown protective circuit, more perfect function; and oneself power consumption is minimum; and after load power source was cut off in shutdown, the working power of self was also cut off fully, accomplishes static state not power consumption fully.
Description of drawings.
Fig. 1 is the utility model operation principle conceptual scheme.
Fig. 2 is the utility model operation principle circuit diagram.
Embodiment is described in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 1, the remote control household electrical appliances automatically close motor protector comprise push-button switch AN, socket CN, control power circuit 1., the external power voltage sample circuit 2., the load current sample circuit 3., overvoltage shutdown protective circuit 4., overcurrent shutdown protective circuit 5., the off signal testing circuit 6., time-delay shutdown circuit 7., reference voltage circuit 8. with relay switching circuit 9..
As shown in Figure 2, the control power circuit is 1. by decompression capacitor C
1, rectifier diode D
3, D
4, filter capacitor C
3And shutdown discharge resistance R
3Form, civil power passes through capacitor C
1Step-down, diode D
3, D
4Halfwave rectifier and capacitor C
3Filtering provide working power to thereafter circuit at different levels; Resistance R
3When the civil power negative half period, be D on the one hand
4The loop is provided, and main is to be capacitor C after shutdown
1Discharge loop is provided.
The external power voltage sample circuit is 2. by rectifier diode D
1, dropping resistor R
4And filter capacitor C
4Form, its input termination switch AN, it obtains civil power through D from external power
1Rectification, R
4Step-down, C
4Filtering export to overvoltage shutdown protective circuit 4. make comparisons input signal, 7. make the benchmark input voltage to time-delay shutdown circuit.
The load current sample circuit is 3. by sample resistance R
1, rectifier diode D
2, dropping resistor R
2, filter capacitor C
2And reverse short-circuit protection diode D
0Form.At the positive half cycle of civil power, load current is at R
1D is passed through in last formation pressure drop
2Rectification, R
2Step-down, C
2The overcurrent shutdown protective circuit that the back is exported in filtering 5. with the off signal testing circuit input signal of 6. making comparisons; At civil power negative half period, D
0Short circuit R
1Make R
1Unlikely continuous energising is because positive half cycle C
2Charge, so the time D
2Partially anti-, output voltage is by C
2Discharge is kept and is provided.
Overvoltage shutdown protective circuit 4. by with the 2. voltage sampling potentiometer W that joins of output of external power voltage sample circuit
2, amplifier A
2Form, during operate as normal, A
2Relatively terminal voltage is W
2The voltage of taking a sample and getting, less than reference edge voltage, A
2Keep the output high level, in case overvoltage signal, W are arranged
2On the voltage obtained greater than reference voltage, A
2Be output low level, cause the relay switching circuit of back to disconnect, shut down.
Overcurrent shutdown protective circuit 5. by with load current sample circuit 3. output and the current sampling electricity value device W that connects
1, amplifier A
3Form, during operate as normal, A
3Relatively terminal voltage is W
1The sampling and voltage less than reference edge voltage, A
3Keep the output high level, in case over-current signal is arranged, W
1On the voltage obtained greater than reference voltage, A
2Be output low level, cause next two relay switching circuits to disconnect, shut down.
The off signal testing circuit is by resistance R
5, amplifier A
1Form resistance R
5Pass through W
2Join the size of reflection external power voltage with external power voltage sample circuit output 2..A
1Comparison termination load current sample circuit output 3., reference edge passes through R
5Ground connection, A during loaded work piece
1The comparison terminal voltage all the time greater than reference edge voltage, output low level, the R of back
5Timing circuit is failure to actuate, in case and load is shut down, A
1The comparison terminal voltage descend A
1The output high level, the output of power control circuit is through R
6To C
57. charging begins to start time-delay shutdown circuit.
Time-delay shutdown circuit is 7. by resistance R
6, capacitor C
5And amplifier A
4Form R
6With C
5Serial connection is delay circuit, A
2Comparison termination C
5, benchmark termination reference voltage circuit, as mentioned above, when 6. the off signal testing circuit detects off signal and by A
1The output high level, the output 1. of control power circuit is through R
6To C
5Charging, trigger is worked as C
5Voltage be charged to and be higher than A
4Reference edge voltage the time, A
4Output low level causes the relay switching circuit of back to disconnect, shuts down.
Reference voltage circuit is 8. by triode Q
1Serial connection light-emitting diode D
6Back ground connection is formed, light-emitting diode double as relay indicating light wherein, Q
1Base stage both with A
2, A
3, A
4Output by dropping resistor R
8Join, again with A
2, A
3, A
4Benchmark input end join, constitute the positive feedback hysteresis comparator circuit, making the shutdown action rapider, like this A
2, A
3, A
4Reference edge voltage be Q
1Pressure drop of be knot and the addition of light-emitting diode forward voltage drop be about 2.8V.
Relay switching circuit is 9. by relay J and meet discharge prevention diode D
5After be connected in series triode Q again
1Form, and relay J and push-button switch AN and be connected into latching circuit, during operate as normal, Q
1Be in conducting state, J is in closure state, in case shutdown, because Q
1Base voltage descend Q
1Disconnect Q by, J
1Go up surplus electric charge and pass through D
5Back discharge, thereby the power supply of cut-out socket and The whole control circuit.
General assembly of the present utility model is a socket type, and the The whole control circuit board is installed in the socket CZ, and push-button switch AN is installed in (figure slightly) on the socket panel.During use,, plug load (as colour TV, video tape recorder) etc. on the socket, click push-button switch AN as long as connect with the mains, the relay J self-locking, control circuit is promptly started working, and this moment is because of the load work of also not starting shooting, so A
1Because of comparing input is that low level is exported high level, and 7. time-delay shutdown circuit begins to start, and opens load in delay period, then A
1Because of comparing input is the high level output low level, and 7. time-delay shutdown circuit quits work, and entire circuit is in normal operating conditions; In case external power voltage or electric current are too high, then overvoltage shutdown protective circuit 4. or overcurrent shutdown protective circuit 5. promptly be activated, relay J disconnects, the shutdown of cutting off the electricity supply; In case load shutdown, 7. 6. the off signal testing circuit promptly start time-delay shutdown circuit, as not start again of load between time delay, time-delay finishes promptly to shut down, cut off the power supply of load and The whole control circuit, repeats said process until pressing the button switch AN once more.In addition,, in delay period, in time do not open load or socket CZ does not connect load, then also can after time-delay finishes, in time cut off the electricity supply, so unloaded the and waste electric energy of reason not if after pressing the button switch AN.
Among the utility model embodiment, amplifier A
1, A
2, A
3, A
4Employing also can be other similar integrated with integrated LM399 of a slice four high guaily unit.
Claims (6)
1, a kind of remote control household electrical appliances automatically close motor protector, form by socket CZ, the push-button switch AN that is connected in series with socket CZ and the control circuit board that is installed in the socket, it is characterized in that described control circuit by the control power circuit 1., the external power voltage sample circuit 2., the load current sample circuit 3., overvoltage shutdown protective circuit 4., overcurrent shutdown protective circuit 5., the off signal testing circuit 6., time-delay shutdown circuit 7., 9. 8. reference voltage circuit form with relay switching circuit; Control power circuit input termination switch AN 1., output take over press the shutdown protective circuit 4., overcurrent shutdown protective circuit 5., the off signal testing circuit 6., time-delay shutdown circuit 7., reference voltage circuit 8. with relay switching circuit 9., for they provide working power; The external power voltage sample circuit is input termination switch AN 2., and output is taken over and pressed shutdown protective circuit comparison input and off signal testing circuit benchmark input end 6. 4.; The load current sample circuit is the input combination hub 3., output take over stream shutdown protective circuit 5. with off signal testing circuit comparison input 6.; Off signal testing circuit output termination time-delay shutdown circuit comparison input 7. 6.; Overvoltage shutdown protective circuit 4., overcurrent shutdown protective circuit 5., 8. time-delay shutdown circuit benchmark input end 7. connect reference voltage circuit, three's output is with succeeding appliance switch circuit 9.; 8. 9. relay switching circuit be connected in series with reference voltage circuit.
2, remote control household electrical appliances as claimed in claim 1 automatically close motor protector, it is characterized in that overvoltage shutdown protective circuit 4., overcurrent shutdown protective circuit 5., the off signal testing circuit 6. with 7. four amplifier A1, A2 of time-delay shutdown circuit, A3, A4 for integrated of a slice four high guaily unit.
3, remote control household electrical appliances as claimed in claim 1 automatically close motor protector; it is characterized in that overvoltage shutdown protective circuit 4., overcurrent shutdown protective circuit 5. with time-delay shutdown circuit three amplifier A2, A3 7., the output tieback benchmark input end separately of A4, constitute the positive feedback hysteresis comparator circuit.
4, remote control household electrical appliances as claimed in claim 1 automatically close motor protector, it is characterized in that reference voltage circuit is 8. by triode Q
1Serial connection light-emitting diode D
6Back ground connection is formed, wherein D
6The double as relay indicating light.
5, remote control household electrical appliances as claimed in claim 1 automatically close motor protector, it is characterized in that controlling power circuit 1. by decompression capacitor C
1, rectifier diode D
3, D
4, filter capacitor C
3And shutdown discharge resistance R
3Form.
6, remote control household electrical appliances as claimed in claim 1 automatically close motor protector, it is characterized in that the load current sample circuit is 3. by sample resistance R
1, rectifier diode D
2, dropping resistor R
2, filter capacitor C
2And reverse short-circuit protection diode D
0Form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92238791 CN2137831Y (en) | 1992-10-28 | 1992-10-28 | Telecontrol fully-automatic protection device for switch-off of domestic electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92238791 CN2137831Y (en) | 1992-10-28 | 1992-10-28 | Telecontrol fully-automatic protection device for switch-off of domestic electric appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2137831Y true CN2137831Y (en) | 1993-07-07 |
Family
ID=33779695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92238791 Expired - Fee Related CN2137831Y (en) | 1992-10-28 | 1992-10-28 | Telecontrol fully-automatic protection device for switch-off of domestic electric appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2137831Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113054637A (en) * | 2021-03-22 | 2021-06-29 | 上海空间电源研究所 | High-voltage discharge protection circuit for energy storage capacitor after shutdown of satellite load power supply |
-
1992
- 1992-10-28 CN CN 92238791 patent/CN2137831Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113054637A (en) * | 2021-03-22 | 2021-06-29 | 上海空间电源研究所 | High-voltage discharge protection circuit for energy storage capacitor after shutdown of satellite load power supply |
| CN113054637B (en) * | 2021-03-22 | 2022-12-13 | 上海空间电源研究所 | High-voltage discharge protection circuit for energy storage capacitor after shutdown of satellite load power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |