CN202042894U - Thermistor short-circuit circuit for limiting inrush current of relay - Google Patents
Thermistor short-circuit circuit for limiting inrush current of relay Download PDFInfo
- Publication number
- CN202042894U CN202042894U CN2011201552824U CN201120155282U CN202042894U CN 202042894 U CN202042894 U CN 202042894U CN 2011201552824 U CN2011201552824 U CN 2011201552824U CN 201120155282 U CN201120155282 U CN 201120155282U CN 202042894 U CN202042894 U CN 202042894U
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Abstract
The utility model discloses a thermistor short-circuit circuit for limiting inrush current of a relay, which is applied to a power supply provided with a rectification circuit and a thermistor connected with the rectification circuit. The short-circuit circuit comprises a PFC (Power Factor Correction) control circuit and a relay module, the input end of the PFC control circuit is connected with the rectification circuit, the output end of the PFC control circuit is connected with the control end of the relay module, the input end of the relay module is connected with the rectification circuit, and the output end of the relay module is connected with the thermistor and can enable the short-circuit or the recovery of the thermistor under the control of the PFC control circuit. The relay module in the utility model enables the short circuit of the thermistor, and can reduce the work loss of the thermistor when no inrush current exists, so as to improve the power supply efficiency effectively.
Description
Technical field
The utility model relates to the thermistor short circuit current of relay to the inrush current restriction, promotes the circuit of Switching Power Supply whole efficiency in particular by the short circuit thermistor.
Background technology
Along with the development of electric appliance and electronic technology, household electronic products is popularized day by day and is electronic, and radio and television, post and telecommunications and computer network are also flourishing day by day.The also huge day by day and deterioration of electric energy loss simultaneously makes electronic product efficient be subjected to the pay attention to day by day of national governments and manufacturing enterprise.The efficient of electric equipment products (efficiency) is a very important technical indicator, and for our low-carbon (LC) life, power-efficient has been an enforceable technical problem.
Power-efficient is meant the complete machine utilization rate of electrical of power supply, just from outside absorbed power and to load power output ratio between the two.This numerical value and power supply designed lines have confidential relation, and high efficiency power supply can improve the service efficiency of electric energy, can reduce the oneself power consumption and the caloric value of power supply to a certain extent.
Power-efficient requires more and more higher at present, the part power supply all requires to reach the requirement of Energy Star now, in order effectively to promote the operating efficiency of power supply, the improvement of material aspect has optimization on the one hand, to such an extent as to we will consider also that more the framework of circuit reduces the loss of energy in all its bearings on the other hand.
In view of this, the inventor has this case to produce at the existing purpose further investigation of constantly pursuing power-efficient then.
The utility model content
The purpose of this utility model is to provide the thermistor short circuit current of a kind of relay to the inrush current restriction, and it can carry out short circuit to thermistor when inrush current not occurring, to reduce the loss of energy.
In order to reach above-mentioned purpose, solution of the present utility model is:
A kind of relay is applied in the power supply thermistor that this power supply has rectification circuit and links to each other with rectification circuit to the thermistor short circuit current of inrush current restriction; Wherein, this short circuit current comprises PFC control circuit and relay module, this PFC control circuit input links to each other with rectification circuit, this PFC control circuit output links to each other with the control end of relay module, the input of this relay module links to each other with rectification circuit, and this relay module output links to each other with thermistor and can allow thermistor short circuit or resume work under the control of PFC control circuit.
Further, this PFC control circuit adopts the control chip of independent PFC control.
Further, this PFC control circuit adopts the control chip that has PFC and PWM controlled function concurrently.
Further, this short circuit current also comprises output transformer, rectifier diode, voltage stabilizing didoe, this output transformer links to each other with rectification circuit, the input of this rectifier diode links to each other with the output of output transformer, the output of this rectifier diode links to each other with the PFC control circuit, and this voltage stabilizing didoe then is arranged in parallel with the PFC control circuit.
Further, this output transformer adopts EE19 or EEL19 transformer.
After adopting said structure, a kind of relay that the utility model relates to is to the thermistor short circuit current of inrush current restriction, under the situation that inrush current do not occur, the voltage that this rectification circuit produces can be injected into relay module, make relay module can allow the thermistor short circuit thus, thereby can reduce the working loss of thermistor, and then improve power-efficient effectively; And when inrush current occurring; this PFC control circuit can be responded to rapidly and the control relay module; treat that the also rapid later secondary coupling of control relay of inrush current to the thermistor short circuit, makes thermistor can play the effect of restriction inrush current, can protect follow-up power consumption equipment.
Description of drawings
Fig. 1 thermistor short circuit current preferred embodiment that a kind of relay limits inrush current for the utility model relates to is applied in the structured flowchart in the power supply;
Fig. 2 is physical circuit figure of the present utility model.
Among the figure:
Short circuit current 100
PFC control circuit 3 relay module 4
Output transformer 5.
Embodiment
In order further to explain the technical solution of the utility model, the utility model is elaborated below by specific embodiment.
As shown in Figure 1, thermistor 2 short circuit currents 100 that its a kind of relay that relates to for the utility model limits inrush current, it is applied in the power supply, and this power supply has rectification circuit 1 and thermistor 2, and this thermistor 2 links to each other with rectification circuit 1.
This short circuit current 100 comprises PFC control circuit 3 and relay module 4, this PFC control circuit input links to each other with rectification circuit 1, this PFC control circuit output links to each other with the control end of relay module 4, the input of this relay module 4 links to each other with rectification circuit 1, these relay module 4 outputs link to each other with thermistor 2, under the control of PFC control circuit, this relay module 4 can allow thermistor 2 short circuits or resume work.Concrete, this PFC control circuit 3 can adopt the control chip of independent PFC control, can also adopt the control chip that has PFC and PWM controlled function concurrently.
Preferably, this short circuit current 100 also comprises output transformer 5, rectifier diode, voltage stabilizing didoe, this output transformer 5 links to each other with rectification circuit 1, and play the effect of step-down, the input of this rectifier diode links to each other with the output of output transformer 5, and voltage carried out rectification, and the output of this rectifier diode links to each other with PFC control circuit 3, and this voltage stabilizing didoe then is arranged in parallel with PFC control circuit 3.This output transformer 5 specifically then adopts EE19 or EEL19 transformer.4 preferred high-tension relays of the big electric current of anti-DC that adopt of this relay module.
Like this, the utility model is under the situation that inrush current do not occur, and the voltage that this rectification circuit 1 produces can be injected into relay module 4, makes relay module 4 can allow thermistor 2 short circuits thus, thereby can reduce the working loss of thermistor 2, and then improve power-efficient effectively; When inrush current occurring; this PFC control circuit 3 can be responded to rapidly and control relay module 4; treat that the also rapid later secondary coupling of control relay of inrush current is to the thermistor short circuit; make thermistor 2 can play the effect of restriction inrush current, can play the effect of protecting follow-up power consumption equipment.
As shown in Figure 2, it is the physical circuit figure of the utility model preferred embodiment, and it shows that workflow of the present utility model is:
After the civil power AC input, at first by the rectification circuit rectification, its direct current that obtains is the electricity supply and use equipment use by thermistor RT1 on the one hand, on the other hand by output transformer T1, and through after rectifier diode D4 rectification and the filter capacitor C1 filtering, carrying out voltage stabilizing through voltage stabilizing didoe ZD1, direct voltage one tunnel after the voltage stabilizing offers the power supply of PFC control circuit, another road offers relay R L1, because relay R L1 has electric current and passes through, then can be thermistor RT1 short circuit, thereby reduce the loss of energy.
The foregoing description and graphic and non-limiting product form of the present utility model and style, any person of an ordinary skill in the technical field all should be considered as not breaking away from patent category of the present utility model to its suitable variation or modification of doing.
Claims (5)
1. a relay is applied in the power supply thermistor that this power supply has rectification circuit and links to each other with rectification circuit to the thermistor short circuit current that inrush current limits; It is characterized in that, this short circuit current comprises PFC control circuit and relay module, this PFC control circuit input links to each other with rectification circuit, this PFC control circuit output links to each other with the control end of relay module, the input of this relay module links to each other with rectification circuit, and this relay module output links to each other with thermistor and can allow thermistor short circuit or resume work under the control of PFC control circuit.
2. a kind of relay as claimed in claim 1 is characterized in that to the thermistor short circuit current of inrush current restriction this PFC control circuit adopts the control chip of independent PFC control.
3. a kind of relay as claimed in claim 1 is characterized in that to the thermistor short circuit current of inrush current restriction this PFC control circuit adopts the control chip that has PFC and PWM controlled function concurrently.
4. a kind of relay as claimed in claim 1 is to the thermistor short circuit current of inrush current restriction, it is characterized in that, this short circuit current also comprises output transformer, rectifier diode, voltage stabilizing didoe, this output transformer links to each other with rectification circuit, the input of this rectifier diode links to each other with the output of output transformer, the output of this rectifier diode links to each other with the PFC control circuit, and this voltage stabilizing didoe then is arranged in parallel with the PFC control circuit.
5. a kind of relay as claimed in claim 4 is characterized in that to the thermistor short circuit current of inrush current restriction this output transformer adopts EE19 or EEL19 transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201552824U CN202042894U (en) | 2011-05-16 | 2011-05-16 | Thermistor short-circuit circuit for limiting inrush current of relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201552824U CN202042894U (en) | 2011-05-16 | 2011-05-16 | Thermistor short-circuit circuit for limiting inrush current of relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202042894U true CN202042894U (en) | 2011-11-16 |
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ID=44970319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201552824U Expired - Fee Related CN202042894U (en) | 2011-05-16 | 2011-05-16 | Thermistor short-circuit circuit for limiting inrush current of relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202042894U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023293A (en) * | 2012-09-07 | 2013-04-03 | 苏州达方电子有限公司 | Surge current suppression circuit of converter and operation method thereof |
| CN106455204A (en) * | 2016-09-28 | 2017-02-22 | 惠州市华阳光电技术有限公司 | LED drive power supply circuit for suppressing inrush current |
-
2011
- 2011-05-16 CN CN2011201552824U patent/CN202042894U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023293A (en) * | 2012-09-07 | 2013-04-03 | 苏州达方电子有限公司 | Surge current suppression circuit of converter and operation method thereof |
| CN106455204A (en) * | 2016-09-28 | 2017-02-22 | 惠州市华阳光电技术有限公司 | LED drive power supply circuit for suppressing inrush current |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20160516 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |