A voltage regulator with the function of protecting the working voltage of an automobile generator from running out of control

[0020] Example 1

[0021] Such as Figure 1-Figure 2 As shown, the voltage regulator with the function of protecting the working voltage of an automobile generator from running out of control includes a sampling control circuit 1, a fast energy storage circuit 2, a generator working voltage out of control protection circuit 3, and a field effect tube switch circuit 4. The effect tube switch circuit 4 is composed of a field effect switch tube T6 and a freewheeling diode D3. The sampling control circuit 1 is composed of a resistor R1, a resistor R2, a resistor R3, a capacitor C1 and a capacitor C2, a diode D1, and a voltage regulator tube DW1 , Transistor T1, capacitor C4 and resistor R7; the fast energy storage circuit 2 is connected in series with the positive electrode D of the regulator + One-way power supply transistor T2, power supply plus current-limiting charging resistor R5, power supply resistor R6, connected to the output terminal of sampling control circuit 1 and the FET s

[0028] Example 2

[0029] Such as image 3 As shown, the generator operating voltage out-of-control protection circuit 3 is composed of a double sampling series dual control trigger circuit and an execution circuit. The execution circuit is composed of a relay coil J connected between the power supply S and the positive electrode of the SCR SCR. It is composed of a normally closed contact J1-1 connected between the generator rotor magnetic field current output terminal F and the drain (F1 terminal) of the field effect switch tube T6. The others are the same as in the first embodiment.

[0030] When the thyristor SCR is triggered, the relay coil J is energized, the normally open contact J1-1 is disconnected, and the generator field current is cut off at the same time.