CN102395238A

CN102395238A - Double-Moss tube asynchronous control HID transformer frequency output apparatus

Info

Publication number: CN102395238A
Application number: CN2011103666491A
Authority: CN
Inventors: 庄景阳
Original assignee: 庄景阳
Current assignee: Rugao Lianya Electronic Devices Co. Ltd.
Priority date: 2011-11-18
Filing date: 2011-11-18
Publication date: 2012-03-28
Anticipated expiration: 2031-11-18
Also published as: CN102395238B

Abstract

The invention provides a double-Moss tube asynchronous control HID transformer frequency output apparatus which comprises a third resistor, a second triode and a second Moss tube. The apparatus is characterized in that: collector electrodes of a first Moss tube and the second Moss tube are in parallel connection with a cathode of a transformer, a discharge electrode of the second triode is connected with one end of the third resistor, the other end of the third resistor is connected with a trigger end of the second Moss tube, a trigger end of the second triode is connected with a 14th angle of a control chip, a collector electrode of the second triode is connected with an output cathode of a power supply, and a collector electrode of a first triode is connected with a power supply output anode. The apparatus of the present invention has the advantages that: functions of segmentation control of work frequency of the transformer by double Moss tubes and effective reduction of operating temperature of the Moss tubes are realized.

Description

The asynchronous control of two MOSFETs HID transformer frequencies output device

Technical field

The present invention relates to the transformer frequencies control device of a kind of motor vehicle illumination with stabilizer, is a kind of pair of asynchronous control of MOSFET HID transformer frequencies output device concretely.

Background technology

At present, the HID xenon lamp is favored by increasing consumer because of its low power consuming high brightness, and the operating current of xenon lamp is mostly at 3.5 amperes; Halogen lamp LED brightness than former car improves about 3 times, but receives the temperature limitation of MOSFET (up to 200 °) in the inside of whole stabilizer, and stabilizer is necessary for the heat radiation that aluminium shell guarantees MOSFET; And the cost that a cover aluminum hull adds heat conductive silica gel is about 8 yuan; Not only too high on cost, simultaneously, because of temperature too high; Electronic device in the stabilizer receives Influence of Temperature and causes part aging unusually, and reduce useful life.

Summary of the invention

The object of the present invention is to provide a kind of pair of asynchronous control of MOSFET HID transformer frequencies output device, make in the operating efficiency that guarantees former transformer, also to have the temperature that reduces MOSFET.

The present invention realizes with following technical scheme: its structure of the asynchronous control of this pair MOSFET HID transformer frequencies output device is made up of No. three resistors, No. two triodes and No. two MOSFETs.It is characterized in that; The collector electrode of a MOSFET and No. two MOSFETs is parallelly connected with the negative pole of transformer; The discharge electrode of No. two triodes is connected with an end of No. three resistors, and the other end of No. three resistors is connected with the trigger end of No. two MOSFETs, and the trigger end of No. two triodes is connected with 14 bugles of control chip; The collector electrode of No. two triodes is connected with the power supply output negative pole, and the collector electrode of a triode is connected with the power supply output cathode.Be connected the positive source line with the outlet of Der StandlichtScheinwerfer und Parkleuchtenschalter, the power-polar curve is connected with negative pole, and two power outlets are connected with the HID bulb; Open Der StandlichtScheinwerfer und Parkleuchtenschalter; One the road to transformer, another road reaches control chip to the power supply of 12V after filtering capacitor filtering, and ten No. three pin of control chip promote the work of a MOSFET concussion transformer; Electric current after the transformer work feeds back to triode No. one through power supply output cathode line; No. one triode quits work, and No. two MOSFETs concussions of the 14 bugles promotion transformers by control chip are able to continuous firing again, and the electric current after the transformer work feeds back to triode No. two through power supply output negative pole line; No. two triode quits work, and works so repeatedly.That is, operating current that ST75N75 bore of former cause is shared by two ME80N75, and original ST75N75 is directly promoted by control chip, and the both positive and negative polarity signal by power supply output comes switch operating now.Thereby reach the function of the working temperature of effective reduction MOSFET.

In the present invention, change original MOSFET ST75N75 high-temperature resistant model into ME80N75 conventional model, the price of a ST75N75 is at 2.4 yuan; And just 1.2 yuan of the prices of a ME80N75 increase a ME80N75, but price still are consistent with the price of a ST75N75; Only increased the expense of 3 resistors and a triode, 0.2 yuan of cost less than, but the temperature of MOSFET has but descended 85 °; The inner operational environment of stabilizer is able to promote, and the life-span of electronic component will effectively be promoted, when temperature problem is effectively controlled; Can change aluminum hull into radiating requirements that the PC plastics can satisfy stabilizer, and cost is merely about 1 yuan.

The invention has the beneficial effects as follows: realized the operating frequency of two MOSFET segmentation control transformers, thereby effectively reduced the function of the working temperature of MOSFET.

Description of drawings

Fig. 1 is the two structural maps of the asynchronous control of MOSFET HID transformer frequencies output device in stabilizer of the present invention.

1. wiring boards among the figure, 2. power supply output cathode line, 3. flame regulating capacitor, 4. filtering capacitor, 5. power supply output negative pole line, 6. positive source line; 7. power-polar curve, 8. fuse, 9. high voltage package, 10. resistor, 11. No. two MOSFETs, 12. ignition capacitors; 13. control chip, 14. No. two resistors, No. 15. MOSFETs, 16. transformers, 17. energy storage capacitors; 18. diode, 19. discharge tubes, 20. No. two triodes, No. 21. triodes, 22. No. three resistors.

Embodiment

Fig. 1 is the two structural maps of the asynchronous control of MOSFET HID transformer frequencies output device in stabilizer of the present invention, and it is constructed by No. three resistors 22, No. two triodes 20 and No. two MOSFETs 11 and forms.In Fig. 1; The collector electrode of a MOSFET 15 and No. two MOSFETs 11 is parallelly connected with the negative pole of transformer 16; The discharge electrode of No. two triodes 20 is connected with an end of No. three resistors 22, and the other end of No. three resistors 22 is connected with the trigger end of No. two MOSFETs 11, and the trigger end of No. two triodes 20 is connected with 14 bugles of control chip 13; The collector electrode of No. two triodes 20 is connected with power supply output negative pole 5, and the collector electrode of a triode 21 is connected with power supply output cathode 2.In Fig. 1, remove No. three resistors 22, No. two triodes 20 and the control circuits of No. two MOSFETs 11 for increasing, all the other are former HID stabilizer self standard configuration parts.

The resistance of described No. three resistors 22 is composed in parallel by the Chip-R of 3 0.05 Ω positive and negative 1%.

Described No. two triodes 20 are 8550 or 8050.

Described No. two MOSFETs 11 are ME80N75.

Claims

1. the two asynchronous control of MOSFET HID transformer frequencies output device, its structure is made up of No. three resistors, No. two triodes and No. two MOSFETs, it is characterized in that; The collector electrode of a MOSFET and No. two MOSFETs is parallelly connected with the negative pole of transformer, and the discharge electrode of No. two triodes is connected with an end of No. three resistors, and the other end of No. three resistors is connected with the trigger end of No. two MOSFETs; The trigger end of No. two triodes is connected with 14 bugles of control chip, and the collector electrode of No. two triodes is connected with the power supply output negative pole, and the collector electrode of a triode is connected with the power supply output cathode; Be connected the positive source line with the outlet of Der StandlichtScheinwerfer und Parkleuchtenschalter, the power-polar curve is connected with negative pole, and two power outlets are connected with the HID bulb; Open Der StandlichtScheinwerfer und Parkleuchtenschalter; One the road to transformer, another road reaches control chip to the power supply of 12V after filtering capacitor filtering, and ten No. three pin of control chip promote the work of a MOSFET concussion transformer; Electric current after the transformer work feeds back to triode No. one through power supply output cathode line; No. one triode quits work, and No. two MOSFETs concussions of the 14 bugles promotion transformers by control chip are able to continuous firing again, and the electric current after the transformer work feeds back to triode No. two through power supply output negative pole line; No. two triode quits work, and works so repeatedly.

2. the asynchronous control of a kind of pair of MOSFET according to claim 1 HID transformer frequencies output device, it is characterized in that: the resistance of described No. three resistors (22) is composed in parallel by the Chip-R of 3 0.05 Ω positive and negative 1%.

3. the asynchronous control of a kind of pair of MOSFET according to claim 1 HID transformer frequencies output device, it is characterized in that: described No. two triodes (20) are 8550 or 8050.

4. the asynchronous control of a kind of pair of MOSFET according to claim 1 HID transformer frequencies output device, it is characterized in that: described No. two MOSFETs (11) are ME80N75.