Energy-saving motorcycle rectifier regulator circuit diagram

The circuit of this device is shown in the figure. The AC voltage output by the magneto is rectified by diodes D1~D6 and becomes a pulsating DC voltage, which is output in two ways. A typical transistor series voltage stabilizing circuit composed of Q1, Q2, Q3, R1, R7, DW1, and C2 outputs 16V voltage after stabilization, and charges the battery through D8; the other channel is isolated by D7 and filtered by C1 and stabilized by IC1 The 12V DC stable voltage is obtained to power the operational amplifier IC2, and is connected to the ② pin of IC2 through the resistor R6 as the reference voltage. The battery voltage is divided by R4 and R5 and then sent to the ③ pin of IC2 as the comparison voltage. When the battery voltage is lower than 14.4V, the comparison voltage applied to pin ③ of IC2 is lower than the 12V reference voltage of pin ②, the operational amplifier outputs low level, Q4 is cut off, and Q1~Q3 work normally and output 16V voltage. When the battery voltage is higher than 14.4V, the comparison voltage of pin ③ of IC2 is higher than the reference voltage of pin ②, IC2 outputs high level, Q4 is saturated and turned on, diverting the current flowing into the base of Q3, thereby causing the output voltage of Q1Q2 drops sharply, D8 cuts off, stopping charging the battery and supplying power to electrical appliances. At this time, all electrical appliances in the car are powered by the battery. When the battery voltage is lower than 14.4V again, IC2 outputs low level again, and Q1 and Q2 output normally. Obviously, when the battery is fully charged, the magneto works almost in a no-load state, unlike a conventional silicon rectifier regulator that is in a large-load short-circuit state, which achieves the purpose of energy saving. In the circuit, R3 is the positive feedback resistor of IC2. R7 is used to trickle charge the battery when Q1Q2 is cut off. The function of D9 is to ensure that the trace zero-drift output of some operational amplifiers will not cause Q4 to turn on and cause malfunction.