1, bridge rectifier circuit, the average current flowing through each diode is: 0.5 times the average load current. (Average refers to the average current passed in a cycle). Each secondary only works for half a cycle.
2, single-phase bridge rectifier circuit output without electrolytic capacitor filter, the output voltage is 0.9 times the transformer secondary voltage (effective value). The output DC voltage after rectification has poor smoothness (the waveform is pulsating DC) and poor stability.
3, single-phase bridge rectifier circuit output with electrolytic capacitor filter, the output voltage is 1.2 times the transformer secondary voltage (effective value).
The output DC voltage after rectification and filtering has a good smoothness (waveform is close to a straight line), but its stability is still relatively poor.
4, single-phase bridge rectifier circuit output with electrolytic capacitor filter with voltage regulator circuit, the output voltage is determined by the voltage regulator circuit.
After rectification, filtering, voltage regulation (the voltage regulator plays a role in the circuit), the output DC voltage is smooth (the waveform is a straight line), and its stability is relatively good.