CN202004656U - Electronic bridge oscillating transformer with DC low voltage power supply - Google Patents
Electronic bridge oscillating transformer with DC low voltage power supply Download PDFInfo
- Publication number
- CN202004656U CN202004656U CN2011201106274U CN201120110627U CN202004656U CN 202004656 U CN202004656 U CN 202004656U CN 2011201106274 U CN2011201106274 U CN 2011201106274U CN 201120110627 U CN201120110627 U CN 201120110627U CN 202004656 U CN202004656 U CN 202004656U
- Authority
- CN
- China
- Prior art keywords
- power
- power supply
- bridge
- effect transistor
- field effect
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Dc-Dc Converters (AREA)
- Inverter Devices (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
The utility model relates to the technical field of electronics, and discloses an electronic bridge oscillating transformer with a DC low voltage power supply. The transformer consists of a bridge oscillator, a high-power metal oxide semiconductor (MOS) field effect transistor full-wave rectification circuit, an overload detection protection circuit and the DC low voltage power supply, wherein the output of the bridge oscillator is connected to the high-power MOS field effect transistor full-wave rectification circuit to provide a load for DC voltage. The transformer has a unique circuit and high efficiency, and is widely used for occasions without AC commercial power or with the inconvenience of power supply such as automobiles, trains and ships and particularly suitable for driving light emitting diode (LED) array lamps or other DC electrical appliances.
Description
Technical field
The utility model relates to electronic technology field, specifically is a kind of Dc low voltage power supply bridge-type oscillating electron transformer.
Background technology
Can supply or the open-air inconvenient occasion of leisure power supply of encamping at automobile, train and not have electric main of ship, adopting storage battery Dc low voltage power supply LED light emitting diode matrix lamp can produce bright light penetrates, the photoelectric conversion efficiency height, light is soft pleasant, easy to use, life-span is long, is widely used in view and advertisement.Yet, it is big to drive large-power light-emitting diodes led array lamp inverter current, require vibration output high-power, electric current just must increase when operating voltage was low, and therefore, big current oscillation triode power consumption temperature rise causes that the pipe electric current and voltage changes, heavy current warming also makes coil magnetic permeability decline inductance value reduce simultaneously, serious generation saturation inductors becomes very little, and then influences light tube electric voltage and electric current change, lamp luminescence brightness instability.Very easily burn out device.
Summary of the invention
The purpose of this utility model provides the Dc low voltage power supply power supply, drags a kind of Dc low voltage power supply bridge-type oscillating electron transformer of high power load.
The utility model technical solution is: by bridge-type oscillator, high-power MOS field effect transistor full-wave rectifying circuit, overload detection protective circuit and Dc low voltage power supply are formed, bridge-type oscillator is a resonant tank by ferrimagnetism primary inductance shunt capacitance, the resonant tank two ends respectively and connect two high-power oscillating tube collector electrodes of PNP and two high-power oscillating tube collector electrodes of NPN, two high-power oscillating tube emitters of PNP connect the Dc low voltage power supply positive pole, two high-power oscillating tube grounded emitters of NPN, complementary series feed power supply, fast extensive diode in parallel between four high-power oscillating tube collector electrodes and the emitter, resonant tank two ends cross-couplings also in parallel is to pipe base resistance quiescent biasing and electric capacity positive feedback are constituted bridge-type oscillator, two high-power oscillating tube base stages of NPN also connect control signal mouthpiece collector electrode, mouthpiece base stage and collector electrode connect voltage negative feedback biasing resistor, grounded emitter, the bridge-type oscillator power output inserts high-power MOS field effect transistor full-wave rectifying circuit by ferrimagnetism transformer secondary output inductance, output dc voltage is for load, the overload detection protective circuit through magnet ring inductance induced potential diode detection, detects voltage access interface management and control system oscillating tube by load current;
Wherein, high-power MOS field effect transistor full-wave rectifying circuit is made of two high-power MOS field effect transistor, switching diode and resistance, two high-power MOS field effect transistor source electrodes connect the two ends of ferrimagnetism transformer secondary output inductance respectively, secondary inductance centre cap ground connection, two high-power MOS field effect transistor gate bias resistance are connected on grid, leak two ends, grid is by the two ends of switching diode parallel resistance intersection access ferrimagnetism transformer secondary output inductance, and two pipe drain electrodes also are connected into the full-wave rectification output dc voltage for load.
The utility model produces useful good effect: the complementary series feed power supply of Dc low voltage power supply power supply bridge-type oscillator, and the high electric current of supply voltage is little, and it is very strong to vibrate, and power consumption significantly reduces, and power output is two times of push-pull oscillator.Capacitance-resistance cross-couplings bridge-type hunting power is synthetic not only efficient, and opposite three rank of collector current phase place and high-order odd harmonic are zero, and even-order harmonic is cancelled out each other, and is output as pure sine wave.The full-wave rectification of high-power MOS field effect transistor is without electrochemical capacitor filtering, and internal resistance is low, and response is fast.Be widely used in the occasion DC-DC conversion that does not have electric main or power supply inconvenience, especially be fit to drive large-power light-emitting diodes LEC array lamp.
Description of drawings
Fig. 1 technical solutions of the utility model functional-block diagram
Fig. 2 bridge-type oscillator circuit
Field effect transistor full-wave rectification of Fig. 3 high-power MOS and overload detection protective circuit
Specific implementation method
With reference to Fig. 1; 2; the utility model specific implementation method and embodiment: by bridge-type oscillator 4; high-power MOS field effect transistor full-wave rectifying circuit 3; overload detection protective circuit 2 and Dc low voltage power supply 1 are formed; bridge-type oscillator 4 is a resonant tank by ferrimagnetism transformer T1 primary inductance L1 shunt capacitance C0; the resonant tank two ends respectively and meet two high-power oscillating tube Q1 of PNP; Q2 collector electrode and two high-power oscillating tube Q3 of NPN; the Q4 collector electrode; two high-power oscillating tube Q1 of PNP; the Q2 emitter connects Dc low voltage power supply 1 positive pole; two high-power oscillating tube Q3 of NPN; the Q4 grounded emitter; complementary series feed power supply; four high-power oscillating tube Q1; Q2 and Q3; fast extensive diode VD1 in parallel between Q4 collector electrode and the emitter; VD2 and VD3; VD4; resonant tank two ends cross-couplings also in parallel arrives pipe base resistance R1; R2 and R3; R4 quiescent biasing and capacitor C 1; C2 and C3; the C4 positive feedback constitutes bridge-type oscillator; two high-power oscillating tube Q3 of NPN; the Q4 base stage also meets control signal mouthpiece Q5; the Q6 collector electrode; mouthpiece Q5; Q6 base stage and collector electrode meet voltage negative feedback biasing resistor R5; R6; grounded emitter; bridge-type oscillator 4 power outputs insert high-power MOS field effect transistor full-wave rectifying circuit 3 by ferrimagnetism transformer T1 secondary inductance L2, and output dc voltage is for load.
Bridge-type oscillator is by PNP, the push-pull oscillator of two symmetrical capacitance-resistance cross-couplings of complementation of NPN triode intercouples and forms, the push-pull oscillator of capacitance-resistance cross-couplings is actual to be the directly continuous two-stage LC frequency selective amplifier of output input, high-power oscillating tube Q1, Q2 and Q3, the Q4 angle of flow is 90 degree alternations, it is very strong to vibrate, output current is half cosine wave pulse, through resonant tank decay harmonic wave, opposite three rank of collector current phase place and high-order odd harmonic are zero, even-order harmonic is cancelled out each other, and is output as pure sine wave in load, and is not only efficient, complementary series feed power supply, the high electric current of supply voltage is little, and power output low in energy consumption is big, is two times of pusb pull oscilator.
Fig. 3, high-power MOS field effect transistor full-wave rectifying circuit is by two high-power MOS field effect transistor Q7, Q8 full-wave rectification output dc voltage, Q7, the Q8 source electrode inserts the two ends of ferrimagnetism transformer T1 secondary inductance L2 respectively, L2 centre cap ground connection, Q7, the Q8 grid is by switching diode VD5, VD6 parallel resistance R12, the R14 intersection inserts the two ends of ferrimagnetism transformer T1 secondary inductance L2, with resistance R 11, R13 provides gate bias, switching diode VD5, VD6 makes grid quicken upset, Q7, Q8 two pipe drain electrodes also are connected into full-wave rectification output dc voltage supply load, rectification circuit is without electrochemical capacitor filtering, it is fast to have the internal resistance low-response, and overload capacity is strong.This electronic transformer output dc voltage, power are determined by bridge-type oscillator and the elementary L1 of ferrimagnetism transformer T1, secondary L2 inductance ratio and supply voltage, electric current.
Overload detection protective circuit 2 through the 3 induced potential diode VD7 detections of magnet ring inductance L, detects voltage through capacitor C 5 filtering by load current, resistance R 7, R8 current limliting access interface pipe Q5, Q6 control oscillating tube Q3, Q4 and Q1, Q2.When load short circuits or loose contact produce big electric current, overload detection voltage makes Q5, Q6 saturation conduction, and Q3, Q4 and Q1, Q2 shield immediately by failure of oscillation.
Embodiment Dc low voltage power supply voltage 48V, bridge-type oscillator electric current 1.2A, frequency 47KHZ, output dc voltage 12V, electric current 4.1A, available power 50W, efficient 85%, the oscillating tube radiator temperature is limited in about 40 ℃.Be suitable for driving large-power light-emitting diodes led array lamp or drive other dc electric apparatus.
Claims (2)
1. Dc low voltage power supply bridge-type oscillating electron transformer; it is characterized in that: by bridge-type oscillator; high-power MOS field effect transistor full-wave rectifying circuit; overload detection protective circuit and Dc low voltage power supply are formed; bridge-type oscillator is a resonant tank by ferrimagnetism primary inductance shunt capacitance; the resonant tank two ends respectively and connect two high-power oscillating tube collector electrodes of PNP and two high-power oscillating tube collector electrodes of NPN; two high-power oscillating tube emitters of PNP connect the Dc low voltage power supply positive pole; two high-power oscillating tube grounded emitters of NPN; complementary series feed power supply; fast extensive diode in parallel between four high-power oscillating tube collector electrodes and the emitter; resonant tank two ends cross-couplings also in parallel is to pipe base resistance quiescent biasing and electric capacity positive feedback are constituted bridge-type oscillator; two high-power oscillating tube base stages of NPN also connect control signal mouthpiece collector electrode; mouthpiece base stage and collector electrode connect voltage negative feedback biasing resistor; grounded emitter; the bridge-type oscillator power output inserts high-power MOS field effect transistor full-wave rectifying circuit by ferrimagnetism transformer secondary output inductance; output dc voltage is for load; the overload detection protective circuit through magnet ring inductance induced potential diode detection, detects voltage access interface management and control system oscillating tube by load current.
2. Dc low voltage power supply bridge-type oscillating electron transformer according to claim 1, it is characterized in that: high-power MOS field effect transistor full-wave rectifying circuit is by two high-power MOS field effect transistor, switching diode and resistance constitute, two high-power MOS field effect transistor source electrodes connect the two ends of ferrimagnetism transformer secondary output inductance respectively, secondary inductance centre cap ground connection, two high-power MOS field effect transistor gate bias resistance are connected on grid, leak two ends, grid is by the two ends of switching diode parallel resistance intersection access ferrimagnetism transformer secondary output inductance, and two pipe drain electrodes also are connected into the full-wave rectification output dc voltage for load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201106274U CN202004656U (en) | 2011-04-03 | 2011-04-03 | Electronic bridge oscillating transformer with DC low voltage power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201106274U CN202004656U (en) | 2011-04-03 | 2011-04-03 | Electronic bridge oscillating transformer with DC low voltage power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202004656U true CN202004656U (en) | 2011-10-05 |
Family
ID=44707382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201106274U Expired - Fee Related CN202004656U (en) | 2011-04-03 | 2011-04-03 | Electronic bridge oscillating transformer with DC low voltage power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202004656U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013181986A1 (en) * | 2012-06-04 | 2013-12-12 | 杭州展顺科技有限公司 | Three-terminal led and drive circuit thereof |
-
2011
- 2011-04-03 CN CN2011201106274U patent/CN202004656U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013181986A1 (en) * | 2012-06-04 | 2013-12-12 | 杭州展顺科技有限公司 | Three-terminal led and drive circuit thereof |
| US9271359B2 (en) | 2012-06-04 | 2016-02-23 | Hangzhou Zhanshun Technology Co., Ltd | Three-terminal LED and drive circuit thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201956907U (en) | Dual-bridge oscillation electronic transformer with DC low voltage power supply | |
| CN202068653U (en) | Double push-pull oscillation power synthesis electroless lamp utilizing direct-current low-voltage power supply | |
| CN201976007U (en) | Solar power supply double-push-pull oscillator electronic transformer | |
| CN109661072A (en) | LLC resonant converter, LED drive circuit and its control method | |
| CN201957316U (en) | High-pressure sodium lamp with direct-current low-voltage power supply and double push -pull oscillators | |
| CN201957323U (en) | Direct current low voltage power double push-pull oscillation metal halide lamp | |
| CN202004656U (en) | Electronic bridge oscillating transformer with DC low voltage power supply | |
| CN202068640U (en) | Double bridge oscillation power synthesis fluorescent lamp with direct current low voltage power supply | |
| CN201975998U (en) | Solar power supply four-push-pull oscillator electronic transformer | |
| CN202103581U (en) | Four-bridge oscillation electronic transformer | |
| CN201976006U (en) | Electronic transformer with solar power supply and push-pull oscillator | |
| CN201994854U (en) | Four-bridge oscillation electronic transformer of solar power supply | |
| CN201976003U (en) | Eight-bridge oscillating electronic transformer with direct-current low-voltage power supply | |
| CN201976001U (en) | Electronic transformer with solar power supply and bridge type oscillator | |
| CN206650872U (en) | Intelligent dimming power circuit | |
| CN201975999U (en) | Electronic transformer with eight push-pull oscillators for DC low-voltage power supply | |
| CN201976333U (en) | Full-bridge oscillating electrodeless lamp with solar power supply | |
| CN201976005U (en) | Push-pull oscillation electronic transformer | |
| CN202004654U (en) | Double-push-pull oscillatory power synthetic electronic transformer | |
| CN201976000U (en) | Electronic transformer with solar power supply and eight push-pull oscillators | |
| CN201976004U (en) | Eight-bridge oscillation electronic transformer for solar energy power supply | |
| CN202068331U (en) | Electronic transformer with four push-pull oscillators | |
| CN202068639U (en) | Bridge type oscillation fluorescent lamp with direct current low voltage power supply | |
| CN201976325U (en) | Four-bridge oscillation power synthesis electrodeless lamp of direct-current low-voltage power supply | |
| CN201976002U (en) | Solar energy power double-bridge oscillation electronic transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20130403 |