Automobile alternator voltage regulator
Technical field
The present invention be more particularly directed to automobile alternator voltage regulator.
Background technology
When motorcar alternator just starts, by Vehicular charging indicator light terminal input generation current.Generally to adopt power be the above bulb of 3W to the Vehicular charging indicator light in the past, uses the automobile of LED pipe many in the recent period.Be installed in the voltage regulator on the vehicle that uses 1.2W common bulb or LED lamp, can not flow into required electric current fully, the problem that the AC generator for vehicle revolutions per increases therefore occurs, make the AC generator for vehicle can't normal power generation at the conducting initial stage.In order to address this problem, car load factory so just makes circuit structure become complicated, and has increased operation for car load factory generally in Vehicular charging indicator light two ends parallel resistance.
Summary of the invention
The objective of the invention is to solve the problems referred to above that prior art exists, provide a kind of circuit structure simple, adapt to various Vehicular charging indicator lights, can guarantee the automobile alternator voltage regulator of automobile current generator normal power generation.
The present invention is achieved in that it has positive source B
+, generating indicator light binding post L, generator coil binding post F
+And F
-And earth terminal E, L is connected to sample circuit 1 at generating indicator light binding post, at generator coil binding post F
-And be connected to switching circuit 2 between the earth terminal E, and the output of sample circuit 1 is connected with the input of switching circuit 2, and its special character is: at generating indicator light binding post L, positive source B
+With generator coil binding post F
+Between be connected to current amplification circuit 3.
Above-mentioned automobile alternator voltage regulator, described current amplification circuit 3 by triode Q1, triode Q2 and on every side element form.
Advantage of the present invention is: circuit structure is simple, can adapt to various Vehicular charging indicator lights, by being connected on generating indicator light binding post L, power positive end B
+With generator coil binding post F
+Between current amplification circuit can improve generator coil binding post input current, supply with the required electric current of AC generator for vehicle loop initial stage generating, thereby guarantee the automobile current generator normal power generation.
Description of drawings
Fig. 1 is a circuit block diagram of the present invention;
Fig. 2 is circuit theory of the present invention and winding diagram.
Embodiment
As shown in the figure, the present invention has positive source B
+, generating indicator light binding post L, generator coil binding post F
+And F
-And earth terminal E, at generating indicator light binding post L and generator coil binding post F
+Between, generator coil binding post F
+And F
-Between be connected to diode D1, D2 respectively, between generating indicator light binding post L and earth terminal E, be connected to the sample circuit 1 that constitutes by divider resistance R4, R5 and R6, capacitor C 1 and C2, diode D4 and voltage-stabiliser tube D5, at positive source B by two utmost point utmost point pipe D1
+, generator coil binding post F
-And be connected to switching circuit 2 between the earth terminal E, described switching circuit 2 is to be made of triode Q3, capacitor C 3, resistance R 7 and R8, field effect transistor T1 and voltage-stabiliser tube D7, the output of sample circuit 1 is connected with the input of switching circuit 2, at generating indicator light binding post L, positive source B
+With generator coil binding post F
+Between be connected to current amplification circuit 3, described current amplification circuit 3 is by triode Q1, triode Q2 and element on every side: base resistance R1, base resistance R2 and collector resistance R3, diode D3 constitute.
During wiring, with positive source B
+Be connected with automobile storage battery 4 positive output ends, with generator coil binding post F
+With F
-Be connected with generator coil 6, automobile storage battery 4 positive output ends are connected with generating indicator light binding post L with Vehicular charging indicator light 5 by ignition switch K.Before the vehicle launch, make ignition switch K be placed on closed position,, make triode Q1 conducting by Vehicular charging indicator light 5 inflow currents by key, and then triode Q2 conducting, by positive source B
+With the electric current of triode Q2 inflow generator winding wiring terminal F fully
+, supply with the required electric current of AC generator for vehicle loop initial stage generating.