CN103001504A - Module power supply circuit suitable for relay control - Google Patents
Module power supply circuit suitable for relay control Download PDFInfo
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- CN103001504A CN103001504A CN 201210580175 CN201210580175A CN103001504A CN 103001504 A CN103001504 A CN 103001504A CN 201210580175 CN201210580175 CN 201210580175 CN 201210580175 A CN201210580175 A CN 201210580175A CN 103001504 A CN103001504 A CN 103001504A
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- power supply
- transformer
- supply circuit
- relay
- power
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Abstract
The invention relates to a module power supply circuit suitable for relay control. The module power supply circuit is composed of a transformer coupling parallel-connection type switching power supply circuit and comprises a rectifier bridge Qb, a mains supply filter capacitor Cb, a switch transformer Tb, a power switch tube Gb, a high-frequency rectifying diode Db, an energy-storage capacitor C0 and a relay J. The end of a Db negative pole outputting positive voltage after the Db performs rectification is an A output end, a power supply reference electric potential negative pole is an output D end, one end of a primary coil P1 of the transformer Tb is connected with a collector electrode c of the power switch tube Gb, the other end of the transformer Tb is connected with the positive power output end of a rectifier bridge Q1, and a base electrode and an emitter of the power switch tube Gb are respectively connected with a converter contact J2 and a normally-opened contact J2-2 of the relay J. The module power supply circuit suitable for optical coupler control is suitable for various intelligent electrical devices and is small in volume, low in cost, simple in structure, advanced in process and convenient to install and use.
Description
Technical field
The present invention relates to electronic device field, concrete relate to a kind of module power supply circuit that is applicable to Control.
Background technology
Present colour TV and similar products (such as VCD, DVD), readiness control circuit is divided into direct current Opportunity awaiting control for linear mode and exchanges the Opportunity awaiting control for linear mode.The circuit because type is different and different, does not have unified method and standard.Direct current Opportunity awaiting control for linear mode is main flow now, has :+B r, row energization management and control mode processed, switching tube interrupted oscillation mode, switching tube failure of oscillation control mode.Its operation principle is: control complete machine main power consumption circuit quits work when standby, and main power source or accessory power supply and control circuit are still in underloading work, and therefore, stand-by power consumption is large; Exchanging the Opportunity awaiting control for linear mode is a kind of method of controlling the Alternating Current Power Supply break-make, disperses because auxiliary power circuit and control circuit components and parts distribute, and exists therefore that to take the mainboard spatial area large, the shortcoming that circuit is complicated, cost is high.Because accessory power supply does not adopt the energy-saving design scheme, idling consumption is still larger again; After desktop computer (PC) adopts the ATX power supply, bring convenience to the user increase function in, also have the defective of " only otherwise pull out attaching plug, 8 watts the stand-by power consumption of still having an appointment ", this is a kind of waste of inaction for the PC that usually arranges under the state.For " breaking through the standby power performance ", internationally famous enterprise ONNN (ON) is released " power controller spare ", has realized the good effect of " power consumption is no more than 150 milliwatts under 240V ac high-voltage and zero load ".But in actual applications, because standby is not equal to zero load.
Summary of the invention
The purpose of this invention is to provide a kind of module power supply circuit that is applicable to Control, simple in structure, cost is low.
The present invention realizes in the following way: a kind of module power supply circuit that is applicable to Control, consisted of by transformer coupled parallel connection type switching power circuit, it is characterized in that comprising rectifier bridge Qb, civil power filter capacitor Cb, switch transformer Tb, power switch pipe Gb, high-frequency rectification diode Db, storage capacitor C0 and relay; Through the Db rectification, exporting positive voltage terminal from the Db negative pole is the A output, power supply zero reference potential negative pole is output D end, the end of the primary coil P1 of transformer Tb is connected with the collector electrode c of power switch pipe Gb, another termination rectifier bridge Q1 positive supply output of Tb, the base of switching tube Gb, emitter-base bandgap grading are connected to respectively relay change over contact J2 and normally opened contact J2-2 thereof.
Module power supply circuit of the present invention, G, the S utmost point of base, emitter-base bandgap grading or MOSEET pipe that can be by short circuit binode type NPN power switch pipe Gb be realized the switching tube failure of oscillation, thereby are made Switching Power Supply no-output, idle.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, a kind of module power supply circuit that is applicable to Control, consisted of by transformer coupled parallel connection type switching power circuit, it is characterized in that comprising rectifier bridge Qb, civil power filter capacitor Cb, switch transformer Tb, power switch pipe Gb, high-frequency rectification diode Db, storage capacitor C0 and relay J; Through the Db rectification, exporting positive voltage terminal from the Db negative pole is the A output, power supply zero reference potential negative pole is output D end, the end of the primary coil P1 of transformer Tb is connected with the collector electrode c of power switch pipe Gb, another termination rectifier bridge Q1 positive supply output of Tb, the base of switching tube Gb, emitter-base bandgap grading are connected to respectively relay J change over contact J2 and normally opened contact J2-2 thereof.
During concrete the use, as the logical 220V(50-60 of L, N termination) alternating current of Hz, be transformed into corresponding dc pulse moving voltage through rectifier bridge Qb, c, the e utmost point through switch transformer Tb primary coil P1 and power switch pipe Gb form the loop, under the effect of the pulsewidth high level of Gb base stage b, electric current in the loop produces just lower negative electromotive force at the P1 winding, this moment is because Tb utmost point winding P2 induced electromotive force is upper just bearing down, rectifying tube Db cut-off is so that electric energy is stored in switch transformer Tb with the form of magnetic energy is inner.When excitation pulsewidth voltage is low level, switching tube Gb cut-off, the On current that flows through the P1 winding disappears, so the P1 winding produces lower just upper negative electromotive force by self-induction, to stop the decline of electric current.This moment, the P2 winding produced just lower negative pulse voltage, and this voltage, powers to the load from A, the output of D two ends to capacitor C 0 charging through diode Db rectification.Switching Power Supply is exactly the power conversion that quick like this (high frequency) finishes electricity-magnetic-electricity.Because electricity-magnetic-electricity is with the high frequency formal transformation, so switch transformer Tb volume is very little; Because this modular power source power output≤1W, therefore special the adaptation, adopted magnetic integrated planar technology, is beneficial to integrated.Because power switch pipe Gb works on off state: pressure drop approaches zero during conducting, and electric current is zero during cut-off, so power consumption is very low, and efficient is very high.Obviously power switch pipe Gb is power conversion " engine ".In the energising situation, G, the S utmost point of base, emitter-base bandgap grading or MOSFET pipe that can be by short circuit bipolar switch pipe (NPN) Gb reach control switch pipe Gb failure of oscillation, thereby make Switching Power Supply no-output, idle, otherwise, the cancellation short circuit, Switching Power Supply is recovered again normal operating conditions.
Claims (1)
1. a module power supply circuit that is applicable to Control is made of transformer coupled parallel connection type switching power circuit, it is characterized in that comprising rectifier bridge Qb, civil power filter capacitor Cb, switch transformer Tb, power switch pipe Gb, high-frequency rectification diode Db, storage capacitor C0 and relay J; Through the Db rectification, exporting positive voltage terminal from the Db negative pole is the A output, power supply zero reference potential negative pole is output D end, the end of the primary coil P1 of transformer Tb is connected with the collector electrode c of power switch pipe Gb, another termination rectifier bridge Q1 positive supply output of Tb, the base of switching tube Gb, emitter-base bandgap grading are connected to respectively relay J change over contact J2 and normally opened contact J2-2 thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210580175 CN103001504A (en) | 2012-12-28 | 2012-12-28 | Module power supply circuit suitable for relay control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210580175 CN103001504A (en) | 2012-12-28 | 2012-12-28 | Module power supply circuit suitable for relay control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103001504A true CN103001504A (en) | 2013-03-27 |
Family
ID=47929738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210580175 Pending CN103001504A (en) | 2012-12-28 | 2012-12-28 | Module power supply circuit suitable for relay control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103001504A (en) |
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2012
- 2012-12-28 CN CN 201210580175 patent/CN103001504A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130327 |