CN202034637U - Energy saving socket with overload protection - Google Patents
Energy saving socket with overload protection Download PDFInfo
- Publication number
- CN202034637U CN202034637U CN2011200842497U CN201120084249U CN202034637U CN 202034637 U CN202034637 U CN 202034637U CN 2011200842497 U CN2011200842497 U CN 2011200842497U CN 201120084249 U CN201120084249 U CN 201120084249U CN 202034637 U CN202034637 U CN 202034637U
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- circuit
- overload protection
- energy
- current
- conservation socket
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Abstract
The utility model discloses an energy saving socket with overload protection, comprising a starting circuit, a capacitance-resistance pressure reduction circuit, a rectification circuit, a breaking mechanism, an indication circuit and a power supply output jack, and also comprising a load current monitoring circuit, a signal processing circuit, a time delay circuit and an execution circuit. According to the utility model, a current transformer and a matched electronic line are used to realtimely monitor the change of the load current of electrical equipment, when the load current exceeds the upper limit setting value, the power supply is rapidly cut off, thereby protecting the safety of life and property; and when the load current exceeds the lower limit setting value, the power supply is cut off delayedly, the standby energy consumption of the electrical equipment is eliminated, thus realizing the intelligent management of the power supply of the electrical equipment.
Description
Technical field
The utility model relates to electronics, electric product technical field, relates in particular to a kind of energy-conservation socket with overload protection.
Background technology
It is the mechanical type overcurrent protection switch of core that existing in the market overload protection socket still adopts with the bimetal leaf; its operating current is big, break-time is long; performance is influenced by environmental temperature, and deenergization does not have the safeguard protection effect on the practical significance rapidly.
Existing energy-conservation socket, circuit design all more complicated, versatility is relatively poor, the layman is not easy to operate, cost is high, should not promote, and oneself power consumption is basically all greater than 2W, and correlation standard: the stand-by power consumption of LCD and LCD TV is all less than 1W, therefore, long-term use so energy-conservation socket, not only not energy-conservation, also waste a large amount of electric energy.
The utility model content
For addressing the above problem, the utility model provides the energy-conservation socket of a kind of zero-power, versatility is good, energy-saving effect is obvious, operating current is little, highly sensitive, stable and reliable for performance band overload protection.
The energy-conservation socket of band overload protection of the present utility model; comprise start-up circuit, resistance-capacitance depressurization circuit, rectification circuit, disjunction mechanism, indicating circuit and power supply output plughole, described energy-conservation socket also comprises load current supervisory circuit, signal processing circuit, delay circuit and executive circuit.
Described start-up circuit is composed in series by starting switch S1 and current-limiting resistance R7, is used to start the normal energized work of the utility model.The end of described starting switch S1 is connected to the end that phase line L goes up, the other end is connected to current-limiting resistance R7 of input ac power, and the other end of described current-limiting resistance R7 is connected to an end of described resistance-capacitance depressurization circuit and an end of rectification circuit input.
Described resistance-capacitance depressurization circuit is composed in parallel by current limiting capacitance C1 and discharge resistance R1, the end that the phase line L that an end is connected to output AC power source goes up, the other end is connected to described rectification circuit input.
Described rectification circuit is made up of rectifier diode D1～D4, voltage stabilizing didoe D5 and filter capacitor C2, and the center line N that an end of its input is connected to input ac power goes up, the other end is connected respectively on described start-up circuit and the resistance-capacitance depressurization circuit.
The output of described rectification circuit provides the operate as normal power supply for signal processing circuit, delay circuit and executive circuit.
Described disjunction mechanism is a relay, is used for disjunction or connects the AC power of load.
Described indicating circuit is used to indicate operating state of the present utility model, is composed in series by current-limiting resistance R8 and LED, and an end is connected on the phase line L of output AC power source, and the other end is connected on the center line N of output AC power source.
Described power supply output plughole is used to connect television set, video disc player, set-top box, host computer, display even load electrical equipment, for load appliance provides required AC power.
Described load current supervisory circuit is a current transformer, is used to monitor the variation of load current.The elementary winding of described current transformer is connected with phase line of power L, and secondary winding is connected on the described signal processing circuit.
Described signal processing circuit by rectifier diode D8, triode Q1 and on every side Resistor-Capacitor Unit form, be used to receive, handle the signal of telecommunication that described current transformer monitors, after comparing again, analyzing, flow to described delay circuit or executive circuit.
Described delay circuit is composed in series by current-limiting resistance R3 and delay capacitor C3, be used for electric equipment shutdown back or the utility model start the back, when electric equipment is not started shooting, the time delayed turn-off external ac power source.
Described executive circuit is made up of triode Q2, triode Q3, voltage stabilizing didoe D6, voltage stabilizing didoe D7, sustained diode 9 and current-limiting resistance R2, is used to receive the triggering signal of telecommunication that described delay circuit or signal processing circuit flow to.When receiving the triggering signal of telecommunication, executive circuit work makes disjunction mechanism action, deenergization.
The beneficial effect of the energy-conservation socket of the utility model band overload protection is: the utility model utilizes the variation of the real-time monitoring circuit apparatus of load of the electronic circuit of current transformer and coupling electric current, discerns electric equipment automatically is work or standby; when monitoring standby, automatically cutting off power source; realize the intelligent management of electric equipment power supply; oneself power consumption is zero during standby, has overload protection and the dual-use function that shuts down automatically.When the load current in the circuit loop surpasses upper limit setting value.
The utility model is cut off the electricity supply rapidly, the safety of protection electric equipment, the generation of prevention appliance fire accident; When the load current in the circuit loop surpass the lower limit setting value, when being the electric equipment standby, the utility model time delayed turn-off power supply, is realized the intelligent management of electric equipment power supply at safe, useful life of prolonging electric equipment of protection electric equipment.
Description of drawings
Fig. 1 is the functional-block diagram of band overload protection in the utility model;
Fig. 2 is the circuit theory diagrams of band overload protection in the utility model.
Embodiment
Be described further below in conjunction with the energy-conservation socket of Figure of description the utility model band overload protection.
Referring to Fig. 1 and Fig. 2; the energy-conservation socket of band overload protection of the present utility model; comprise start-up circuit, resistance-capacitance depressurization circuit, rectification circuit, disjunction mechanism, indicating circuit and power supply output plughole, also comprise load current supervisory circuit, signal processing circuit, delay circuit and executive circuit.
Described start-up circuit is composed in series by starting switch S1 and current-limiting resistance R7, the end of described starting switch S1 is connected to the end that phase line L goes up, the other end is connected to current-limiting resistance R7 of input ac power, and the other end of described current-limiting resistance R7 is connected respectively to the end of discharge resistance R1, the end of current limiting capacitance C1 and an end of described rectification circuit input.
Described resistance-capacitance depressurization circuit is made of current limiting capacitance C1 and discharge resistance R1 parallel connection, the end that the phase line L that an end is connected to output AC power source goes up, the other end is connected to described rectification circuit input.
Described rectification circuit is made up of rectifier diode D1～D4, voltage stabilizing didoe D5 and filter capacitor C2, and the center line N that an end of its input is connected to input ac power goes up, the other end is connected respectively to the end of described current-limiting resistance R7 and an end of described resistance-capacitance depressurization circuit; The positive pole of the negative pole of described voltage stabilizing didoe D5 and filter capacitor C2 all is connected on the output plus terminal of described rectification circuit, and the negative pole of the positive pole of described voltage stabilizing didoe D5 and filter capacitor C2 all is connected on the output negative terminal of described rectification circuit.
Described disjunction mechanism is a relay, is used for disjunction or connects the AC power of load.
Described indicating circuit is used to indicate operating state of the present utility model, is composed in series by current-limiting resistance R8 and LED.The end of described current-limiting resistance R8 is connected on the phase line L of output AC power source, and the other end is connected to the positive pole of described LED, and the negative pole of described LED is connected on the center line N of output AC power source.
Described power supply output plughole is used to connect television set, video disc player, set-top box, host computer, display even load electrical equipment, for load appliance provides required AC power.
Described load current supervisory circuit is a current transformer TA, is used to monitor the variation of load current.The elementary winding of described current transformer TA is connected with the phase line L of out-put supply, and positive pole, the other end that an end of secondary winding is connected to rectifier diode D8 are connected to the negative terminal that described rectification circuit is exported.
Described signal processing circuit is made up of rectifier diode D8, filter capacitor C4, current limliting adjustable resistance R4, triode Q1, divider resistance R5 and dividing potential drop adjustable resistance R6,
The positive pole of described rectifier diode D8 is connected to an end of the secondary winding of described current transformer TA, and negative pole is connected respectively to the end of described filter capacitor C4, the end of current limliting adjustable resistance R4 and the end of divider resistance R5; The other end of described filter capacitor C4 is connected to the negative terminal of described rectification circuit output; The other end of described current limliting adjustable resistance R4 is connected to the base stage of described triode Q1; The emitter of described triode Q1 is connected to the negative terminal of described rectification circuit output, and collector electrode is connected respectively to the negative pole of an end, delay capacitor C3 positive pole and the voltage stabilizing didoe D7 of current-limiting resistance R3; The other end of described divider resistance R5 is connected respectively to the end of described dividing potential drop adjustable resistance R6 and the positive pole of sustained diode 9, and the other end of described divider resistance R6 is connected to the negative terminal of described rectification circuit output.
Described delay circuit is composed in series by current-limiting resistance R3 and delay capacitor C3.The end of described current-limiting resistance R3 is connected to the anode of described rectification circuit output, and the other end is connected respectively to the collector electrode of described triode Q1, the positive pole of delay capacitor C3 and the negative pole of voltage stabilizing didoe D7; The negative pole of described delay capacitor C3 is connected to the negative terminal of described rectification circuit output.
Described executive circuit is made up of triode Q2, triode Q3, voltage stabilizing didoe D6, voltage stabilizing didoe D7, sustained diode 9 and current-limiting resistance R2.The base stage of described triode Q2 is connected respectively to the positive pole of described voltage stabilizing didoe D7 and the negative pole of sustained diode 9, emitter is connected to the negative terminal of described rectification circuit output, and collector electrode is connected respectively to the negative pole of described voltage stabilizing didoe D6 and the end of current-limiting resistance R2; The negative pole of described voltage stabilizing didoe D7 is connected respectively to the positive pole of the C3 of described delay capacitor, the end of current-limiting resistance R3 and the collector electrode of described triode Q1; The positive pole of described sustained diode 9 is connected to the end of described divider resistance R5 and the end of dividing potential drop adjustable resistance R6; The other end of described current-limiting resistance R2 is connected to the anode of described rectification circuit output; The positive pole of described voltage stabilizing didoe D6 is connected to the base stage of described triode Q3; The emitter of described triode Q3 is connected to the negative terminal of described rectification circuit output, and collector electrode is connected to an end of described relay coil; The other end of described relay coil is connected to the anode of described rectification circuit output.
Operation principle of the present utility model is as follows:
One, energized:
Under the normal situation of connecting external ac power source, click starting switch S1, rectified current rood electricity work simultaneously, executive circuit and signal processing circuit also electric work, triode Q3 conducting, relay K 1 adhesive, contacting, i.e. energized.
Two, standby is shut down automatically:
In normal working conditions, when after the load appliance shutdown or after the utility model connection, when load appliance is not started shooting, in the circuit loop load current just become very little, even be zero, surpass the lower limit setting value, this moment, the signal of telecommunication that induces of secondary winding of current transformer TA was very faint, behind current limliting adjustable resistance R4, no longer can keep triode Q1 conducting, be that triode Q1 ends, current-limiting resistance R3 gives delay capacitor C3 charging simultaneously, current potential on the collector electrode of triode Q1 becomes high potential, and raise gradually, when being elevated to the threshold value of voltage stabilizing didoe D7, voltage stabilizing didoe D7 punctures, conducting, trigger triode Q2 conducting, voltage stabilizing didoe D6 is turn-offed, triode Q3 ends, and relay K 1 discharges simultaneously, the contact disjunction, be deenergization, realize shutdown automatically.
Three, overload protection:
In normal working conditions, the part of the signal of telecommunication that the secondary winding of current transformer TA induces through current limliting adjustable resistance R4 be transported to triode Q1 base stage, keep the conducting of triode Q1, promptly keep connection work of the present utility model, a part is transported to the positive pole of dividing potential drop adjustable resistance R6 and sustained diode 9 through divider resistance R5, but can not make sustained diode 9 forward conductions.
In circuit loop load current increase; and when meeting or exceeding upper limit setting value; the signal of telecommunication that the secondary winding of current transformer TA induces; after divider resistance R5 and dividing potential drop adjustable resistance R6 dividing potential drop; make sustained diode 9 forward conductions; triode Q2 conducting simultaneously, voltage stabilizing didoe D6 turn-off, triode Q3 ends, relay K 1 discharges, the contact disconnects, i.e. deenergization, protection electrical equipment.
Above embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that the common engineers and technicians in this area make the technical solution of the utility model all should fall in the definite protection range of claims of the present utility model.
Claims (10)
1. energy-conservation socket with overload protection, comprise start-up circuit, resistance-capacitance depressurization circuit, rectification circuit, disjunction mechanism, indicating circuit and power supply output plughole, described start-up circuit is used to start the normal energized work of the utility model, and the center line N that an end of described rectification circuit input is connected to input ac power goes up, the other end of rectification circuit is connected respectively on described start-up circuit and the resistance-capacitance depressurization circuit; The output of described rectification circuit provides the operate as normal power supply for signal processing circuit, delay circuit and executive circuit; Described disjunction mechanism is used for disjunction or connects the AC power of load; It is characterized in that: described energy-conservation socket also comprises load current supervisory circuit, signal processing circuit, delay circuit and executive circuit;
Described load current supervisory circuit is used to monitor the variation of load current, and the elementary winding of described current transformer is connected with phase line of power L, and secondary winding is connected on the described signal processing circuit;
Described signal processing circuit is used to receive, handle the signal of telecommunication that described current transformer monitors, and after comparing, analyzing, flows to described delay circuit or executive circuit;
Described delay circuit is used for electric equipment shutdown back or the utility model starts the back, when electric equipment is not started shooting, the time delayed turn-off external ac power source;
Described executive circuit is used to receive the triggering signal of telecommunication that described delay circuit or signal processing circuit flow to, and when receiving when triggering the signal of telecommunication, executive circuit work makes disjunction mechanism action, deenergization.
2. the energy-conservation socket of band overload protection according to claim 1 is characterized in that: described load current supervisory circuit is a current transformer.
3. the energy-conservation socket of band overload protection according to claim 1 is characterized in that: described signal processing circuit by rectifier diode D8, triode Q1 and on every side Resistor-Capacitor Unit form.
4. the energy-conservation socket of band overload protection according to claim 1 is characterized in that: described delay circuit is composed in series by current-limiting resistance R3 and delay capacitor C3.
5. the energy-conservation socket of band overload protection according to claim 1 is characterized in that: described executive circuit is made up of triode Q2, triode Q3, voltage stabilizing didoe D6, voltage stabilizing didoe D7, sustained diode 9 and current-limiting resistance R2.
6. the energy-conservation socket of band overload protection according to claim 1 is characterized in that: the end that the phase line L that described resistance-capacitance depressurization circuit one end is connected to output AC power source goes up, the other end of resistance-capacitance depressurization circuit is connected to described rectification circuit input.
7. the energy-conservation socket of band overload protection according to claim 1; it is characterized in that: described indicating circuit is used to indicate operating state of the present utility model; one end of indicating circuit is connected on the phase line L of output AC power source, and the other end of indicating circuit is connected on the center line N of output AC power source.
8. the energy-conservation socket of band overload protection according to claim 1; it is characterized in that: described power supply output plughole is used to connect television set, video disc player, set-top box, host computer, display even load electrical equipment, for load appliance provides required AC power.
9. the energy-conservation socket of band overload protection according to claim 1 is characterized in that: described rectification circuit is made up of rectifier diode D1～D4, voltage stabilizing didoe D5 and filter capacitor C2.
10. the energy-conservation socket of band overload protection according to claim 1 is characterized in that: described disjunction mechanism is a relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200842497U CN202034637U (en) | 2011-03-25 | 2011-03-25 | Energy saving socket with overload protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200842497U CN202034637U (en) | 2011-03-25 | 2011-03-25 | Energy saving socket with overload protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202034637U true CN202034637U (en) | 2011-11-09 |
Family
ID=44896923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200842497U Expired - Fee Related CN202034637U (en) | 2011-03-25 | 2011-03-25 | Energy saving socket with overload protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202034637U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106992493A (en) * | 2016-01-21 | 2017-07-28 | 上海复旦微电子集团股份有限公司 | A kind of overload protection detects circuit |
| CN107422665A (en) * | 2017-06-08 | 2017-12-01 | 林文通 | Intelligence automatically powers off power-supply management system |
-
2011
- 2011-03-25 CN CN2011200842497U patent/CN202034637U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106992493A (en) * | 2016-01-21 | 2017-07-28 | 上海复旦微电子集团股份有限公司 | A kind of overload protection detects circuit |
| CN106992493B (en) * | 2016-01-21 | 2019-08-16 | 上海复旦微电子集团股份有限公司 | A kind of overload protection detection circuit |
| CN107422665A (en) * | 2017-06-08 | 2017-12-01 | 林文通 | Intelligence automatically powers off power-supply management system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Shenzhen USHO Electric Co., Ltd. Document name: Notification to Pay the Fees |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20120325 |