CN205610497U - Aperiodicity switching power supply controller - Google Patents
Aperiodicity switching power supply controller Download PDFInfo
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- CN205610497U CN205610497U CN201620341599.XU CN201620341599U CN205610497U CN 205610497 U CN205610497 U CN 205610497U CN 201620341599 U CN201620341599 U CN 201620341599U CN 205610497 U CN205610497 U CN 205610497U
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Abstract
The utility model discloses an aperiodicity switching power supply controller, including rectifier bridge Q, resistance R2, transformer T, electric capacity C1, triode Q1 and three terminal regulator U1, 220V alternating current both ends are connected respectively with rectifier bridge Q pin 3 to rectifier bridge Q pin 1, and electric capacity C1, resistance R2 and transformer T coil L1 are connected respectively to rectifier bridge Q pin 2, and triode Q1 collecting electrode is connected to the transformer T coil L1 other end, triode Q1 emitter ground, and triode Q1 base is the connecting resistance R2 other end, electric capacity C4 and diode D1 negative pole respectively. The utility model discloses aperiodicity switching power supply controller adopts triode cooperation transformer to control, and circuit structure is very simple, and is with low costs, small, does not adopt any chip element moreover, and the interference killing feature is strong.
Description
Technical field
This utility model relates to a kind of power supply, specifically a kind of aperiodicity switch power controller.
Background technology
Currently, most of switching mode power supply transformers (no matter auto-excitation type or independent-excited circuit) are the mu balanced circuit that PWM system controls.In this kind of switching mode power supply transformer, switching power tube always periodic ON/OFF, PWM controller simply changes the pulse width in each cycle.Because PWM controller is operated in linear zone, it will not saturated also will not end, and the pulsewidth that will not make some cycle is zero, also will not out of control and that naturally set close to blocking oscillator maximum pulse width.Therefore, it can be said that this control is continuous print, only changes " measuring " and do not change " matter ".
Aperiodicity switching mode power supply transformer is the most different, its Pulse Width Control process is not linear continuous variation, and only have " 0 " and " 1 " two states: when switching mode power supply transformer output voltage overrate, impulse controller enters saturation conduction state, and switching power tube stops oscillation；When switching mode power supply transformer output voltage is less than rated value, impulse controller turns off cut-off, and switching power tube starts vibration.Therefore, impulse controller only has " 0 " and " 1 " two states, and its vibration is discontinuous acyclic.And the time ratio that switching power tube is between " 0 " and " 1 " two states depends on load.When the electric current that load equipment consumes reduces, because filter capacitor extends discharge time, switching mode power supply transformer output voltage will not quickly reduce, and switching power tube is at ending off state, until output voltage drops to below rated value, switch power turns on the most again.The deadline of switching power tube depends on the size of load current.This type of switching mode power supply transformer, the ON/OFF of switching power tube is not to be controlled by PWM system, but by level switch by output voltage sampling rate is controlled more afterwards.The most this periodic switch mains transformer is highly suitable to be applied for carrying out power supply to the equipment that load discontinuity or load change greatly and powers.
After aperiodicity Switching Power Supply is widely used in household electrical appliance, a lot of aperiodicity Switching Power Supplies all use chip component to be controlled, although simplifying design, but improve cost, and the general capacity of resisting disturbance of chip is more weak.
Utility model content
The purpose of this utility model is to provide a kind of aperiodicity switch power controller, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the following technical scheme of this utility model offer:
nullA kind of aperiodicity switch power controller，Including rectifier bridge Q、Resistance R2、Transformator T、Electric capacity C1、Audion Q1 and three terminal regulator U1，Described rectifier bridge Q pin 1 and rectifier bridge Q pin 3 connect 220V alternating current two ends respectively，Rectifier bridge Q pin 2 connects electric capacity C1 respectively、Resistance R2 and transformator T coil L1，Transformator T coil L1 other end connecting triode Q1 colelctor electrode，Audion Q1 grounded emitter，Audion Q1 base stage connects the resistance R2 other end respectively、Electric capacity C4 and diode D1 negative pole，The electric capacity C4 other end connects resistance R5，Resistance R5 other end connection transformer T coil L3，Transformator T coil L3 other end connection transformer T coil L4 respectively、Electric capacity C5、The electric capacity C1 other end and rectifier bridge Q pin 4，The transformator T coil L4 other end connects diode D2 negative pole，Diode D2 positive pole connects the electric capacity C5 other end respectively、Diode D1 positive pole and electric capacity C1，Electric capacity C1 other end connection transformer T coil L2 respectively、Electric capacity C2、Diode D7 positive pole、Three terminal regulator U1 earth terminal and electric capacity C3，The electric capacity C3 other end connects outfan V1 and three terminal regulator U1 outfan respectively，Three terminal regulator U1 input connects diode D7 negative pole respectively、The electric capacity C2 other end and diode D4 negative pole，The diode D4 positive pole connection transformer T coil L2 other end.
As this utility model further scheme: described three terminal regulator U1 uses 7805.
Compared with prior art, the beneficial effects of the utility model are: this utility model aperiodicity switch power controller uses audion to coordinate transformator to be controlled, and circuit structure is the simplest, low cost, volume is little, and does not use any chip component, and capacity of resisting disturbance is strong.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of aperiodicity switch power controller.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
nullRefer to Fig. 1，In this utility model embodiment，A kind of aperiodicity switch power controller，Including rectifier bridge Q、Resistance R2、Transformator T、Electric capacity C1、Audion Q1 and three terminal regulator U1，Described rectifier bridge Q pin 1 and rectifier bridge Q pin 3 connect 220V alternating current two ends respectively，Rectifier bridge Q pin 2 connects electric capacity C1 respectively、Resistance R2 and transformator T coil L1，Transformator T coil L1 other end connecting triode Q1 colelctor electrode，Audion Q1 grounded emitter，Audion Q1 base stage connects the resistance R2 other end respectively、Electric capacity C4 and diode D1 negative pole，The electric capacity C4 other end connects resistance R5，Resistance R5 other end connection transformer T coil L3，Transformator T coil L3 other end connection transformer T coil L4 respectively、Electric capacity C5、The electric capacity C1 other end and rectifier bridge Q pin 4，The transformator T coil L4 other end connects diode D2 negative pole，Diode D2 positive pole connects the electric capacity C5 other end respectively、Diode D1 positive pole and electric capacity C1，Electric capacity C1 other end connection transformer T coil L2 respectively、Electric capacity C2、Diode D7 positive pole、Three terminal regulator U1 earth terminal and electric capacity C3，The electric capacity C3 other end connects outfan V1 and three terminal regulator U1 outfan respectively，Three terminal regulator U1 input connects diode D7 negative pole respectively、The electric capacity C2 other end and diode D4 negative pole，The diode D4 positive pole connection transformer T coil L2 other end；Described three terminal regulator U1 uses 7805.
Operation principle of the present utility model is: refer to the intermittent oscillation circuit that Fig. 1, audion Q1 and pulse transformer T composition is common, and R2 is for starting resistance, and C4, C5 are positive feedback capacitor element.After circuit start vibration, transformator T secondary induction pulse is through commutation diode D4 rectification, then electric capacity C2 filters the load equipment offer running voltage of backward output end vo after filtering.
nullDiode D2、The rectification circuit of electric capacity C5 composition，The coil L4 pulse voltage of pulse transformer T is carried out rectification，The ON/OFF of switching power tube Q1 is controlled by zener diode D1，During switching power tube Q1 turns on，In transformator T, the energy of storage increases，The commutating voltage of D2 all uprises with switch power source output voltage，When the charging voltage on electric capacity C5 is more than stabilivolt D,1 breakdown voltage time，Stabilivolt D1 punctures，The positive feedback current of Q1 base stage is cancelled，Q1 will stop oscillation，Now the storage energy of pulse transformer T can discharge，After diode D4 rectification，It is powered to load equipment，Along with T energy release process，Voltage and electric capacity C5 both end voltage in load decline the most simultaneously，When C5 voltage is less than the breakdown voltage of stabilivolt D1，Circuit starts again vibration，If load increases，The speed that releases energy is by too fast，The switching tube Q1 failure of oscillation time shortens，If load reduces，Then switching tube Q1 failure of oscillation time lengthening，This conversion process is different from PWM pulse-width modulation switching power supply.
It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and in the case of without departing substantially from spirit or essential attributes of the present utility model, it is possible to realize this utility model in other specific forms.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims rather than described above, it is intended that all changes fallen in the implication of equivalency and scope of claim included in this utility model.Should not be considered as limiting involved claim by any reference in claim.
In addition, it is to be understood that, although this specification is been described by according to embodiment, but the most each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should can also be formed, through appropriately combined, other embodiments that it will be appreciated by those skilled in the art that as an entirety, the technical scheme in each embodiment by those skilled in the art.
Claims (2)
- null1. an aperiodicity switch power controller，Including rectifier bridge Q、Resistance R2、Transformator T、Electric capacity C1、Audion Q1 and three terminal regulator U1，It is characterized in that，Described rectifier bridge Q pin 1 and rectifier bridge Q pin 3 connect 220V alternating current two ends respectively，Rectifier bridge Q pin 2 connects electric capacity C1 respectively、Resistance R2 and transformator T coil L1，Transformator T coil L1 other end connecting triode Q1 colelctor electrode，Audion Q1 grounded emitter，Audion Q1 base stage connects the resistance R2 other end respectively、Electric capacity C4 and diode D1 negative pole，The electric capacity C4 other end connects resistance R5，Resistance R5 other end connection transformer T coil L3，Transformator T coil L3 other end connection transformer T coil L4 respectively、Electric capacity C5、The electric capacity C1 other end and rectifier bridge Q pin 4，The transformator T coil L4 other end connects diode D2 negative pole，Diode D2 positive pole connects the electric capacity C5 other end respectively、Diode D1 positive pole and electric capacity C1，Electric capacity C1 other end connection transformer T coil L2 respectively、Electric capacity C2、Diode D7 positive pole、Three terminal regulator U1 earth terminal and electric capacity C3，The electric capacity C3 other end connects outfan V1 and three terminal regulator U1 outfan respectively，Three terminal regulator U1 input connects diode D7 negative pole respectively、The electric capacity C2 other end and diode D4 negative pole，The diode D4 positive pole connection transformer T coil L2 other end.
- Aperiodicity switch power controller the most according to claim 1, it is characterised in that described three terminal regulator U1 uses 7805.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620341599.XU CN205610497U (en) | 2016-04-21 | 2016-04-21 | Aperiodicity switching power supply controller |
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| CN201620341599.XU CN205610497U (en) | 2016-04-21 | 2016-04-21 | Aperiodicity switching power supply controller |
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| CN205610497U true CN205610497U (en) | 2016-09-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107293111A (en) * | 2017-07-26 | 2017-10-24 | 武汉市政工程设计研究院有限责任公司 | A kind of intelligent sidewalk for visually impaired people acoustic control system for prompting and method |
| CN108809110A (en) * | 2018-06-13 | 2018-11-13 | 湖南图强科技开发有限公司 | A kind of power supply system of adjustable frequency |
-
2016
- 2016-04-21 CN CN201620341599.XU patent/CN205610497U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107293111A (en) * | 2017-07-26 | 2017-10-24 | 武汉市政工程设计研究院有限责任公司 | A kind of intelligent sidewalk for visually impaired people acoustic control system for prompting and method |
| CN108809110A (en) * | 2018-06-13 | 2018-11-13 | 湖南图强科技开发有限公司 | A kind of power supply system of adjustable frequency |
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Effective date of registration: 20161010 Address after: 516000 Guangdong city of Huizhou province Huizhou Longshan Dayawan West Xiangshuihe Road seven Patentee after: HUIZHOU SINHUIYUAN TECHNOLOGY CO.,LTD. Address before: Tianhe District Tong East Road Guangzhou city Guangdong province 510665 B-101 No. 5, room B-118 Patentee before: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Effective date of registration: 20161010 Address after: Tianhe District Tong East Road Guangzhou city Guangdong province 510665 B-101 No. 5, room B-118 Patentee after: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Address before: 315700 Ningbo, Xiangshan province Dan Road West Park Road, No. 112 Patentee before: XIANGSHAN JIEERDE INTELLIGENT SCIENCE AND TECHNOLOGY Co.,Ltd. |