CN2169203Y

CN2169203Y - Electronic flash relay of vehicle

Info

Publication number: CN2169203Y
Application number: CN 93214215
Authority: CN
Inventors: 杨明建
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-29
Filing date: 1993-05-29
Publication date: 1994-06-15
Anticipated expiration: 2003-05-29

Abstract

The utility model belongs to an electronic flash relay of vehicles, which is composed of a bridge circuit, a triode and a capacitor. The power cord of the utility model is divided into two parts by the bridge circuit, one part of the power cord is connected with the base electrode of the triode, the other part of the power cord returns to be connected with the collector of the triode after connecting the capacitor and finally is connected with the bridge circuit by the emitter of the triode. The utility model has the advantages of low internal resistance, strong loading ability and high flash efficiency.

Description

Electronic flash relay of vehicle

The utility model belongs to a kind of automobile-used high-performance electronic flashing relay, is mainly used in vehicle turn signal, double jump lamp.

At present, the used photoflash lamp relay in market detects because of adopting resistance to carry out dividing potential drop, and it is not strong to make it load capacity, causes the flashing rate instability, fragile photoflash lamp.

The purpose of this utility model is to overcome the deficiency of above-mentioned known technology, can accurately provide alarm signal, strong, the high auto electronic flashing relay of flash of light efficient of load capacity thereby provide a kind of.

The purpose of this utility model realizes with following mode:

With reference to Fig. 1: the utility model is made up of bridge circuit, triode and electric capacity, wherein: power line advances the B point through JC by bridge circuit diode D1, a part arrives the C point by R1, the C point is leaded up to transistor base, lead up to diode D5, D6 backspace A point, another part meets diode D7 and diode D8 through the B point, the make and break contact of D8 two termination JC1, enter capacitor C1, C2, ZC to the F point, receive transistor collector and pass through emitter, connecting resistance R2 gets back to the A point, and major loop ZC1 is connected on bridge whole the input G point and H point.

The utility model compared with prior art has following advantage:

Because adopting current relay is detecting element, reduce internal resistance, load capacity is strengthened, flash of light efficient height, is used for vehicle turn signal or double jump lamp, in case lamp breaks down, this relay frequency adds fast again, and lamp is reported to the police.

Below in conjunction with accompanying drawing to novel being described in detail of this reality 4 usefulness:

Fig. 1 is the utility model circuit diagram.

See Fig. 1: when pole changer is connected after terminal B(L) enter current relay JC and enter constant-current source circuit R1 by diode D1 and provide a forward base current to transistor, transistor enters amplification region work.This moment another kind of road diode D7, D8 charges to capacitor, because primary capacitance device two terminal voltages are from zero volt, at this moment loop current can be very big, voltage drop (the A end of R2 connects ground end through D3) this voltage and the diode D5 that is located in the base circuit on emitter resistance R 2, have been produced, D6 compares, the high more emitter current potential of voltage that R2 produces also increases and makes base current reduce, making it amplification coefficient descends, collector current reduces, this negative feedback makes the circuit can be with constant electric current to C1, the C2 charging, when condenser voltage raises relay ZC adhesive ZC1 contact is connected, direction indicator lamp is connected, if the intact JC adhesive of vehicle lamp, connection entire circuit owing to ZC1 quits work simultaneously, will keep the adhesive capacitor C 1 of ZC this moment discharges to ZC, the adhesive C2 of JC1 also discharges to ZC by the contact of JC1, the normal pickup time of having kept ZC, will repeat above-mentioned work when ZC opens.When the vehicle lamp failure, during the ZC1 adhesive, the JC JC1 contact of being failure to actuate is disconnected, and holds time and has only C1 to discharge to ZC, and it is fast again that C2 is subjected to the obstruction of diode D8 to make that the entire circuit operating frequency adds.

Claims

1, a kind of auto electronic flashing relay, be made up of bridge circuit, triode and electric capacity, it is characterized in that power line advances the B point through JC by bridge circuit diode D1, a part arrives the C point by R1, the C point is leaded up to transistor base, leads up to diode D5, D6 backspace A point; Another part meets diode D7 and diode D8 through the B point, the make and break contact of D8 two termination JC1 enters capacitor C1, C2, ZC to the F point, receives transistor collector again, R2 gets back to the A point by emission collection connecting resistance, and major loop ZC1 is connected on the input G point and H point of bridge circuit.