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Question:

DC regulated power supply consists of power transformer, rectifier circuit, filter circuit and voltage stabilizing circuit. The stable DC source mainly supplies the electronic circuit

DC regulated power supply consists of power transformer, rectifier circuit, filter circuit and voltage stabilizing circuit. The stable DC source mainly supplies the electronic circuit

Answer:

The stable DC source mainly supplies the electric energy to the electronic circuit. The DC regulated power supply makes the unstable AC voltage can output the steady DC voltage to meet the demand of the electric appliance by changing a series of transformations such as voltage change, rectification, filtering and voltage stabilizing.
You see, that's OK. There's a switch S, D1~D4,DC regulated power supply consists of power transformer, rectifier circuit, filter circuit and voltage stabilizing circuit.The stable DC source mainly supplies the electric energy to the electronic circuit. The DC regulated power supply makes the unstable AC voltage can output the steady DC voltage to meet the demand of the electric appliance by changing a series of transformations such as voltage change, rectification, filtering and voltage stabilizing.
The design for the positive and negative step-down power supply circuit, using the center tapped transformer, voltage through the transformer step-down, and then through the bridge rectifier filter network through the network, large capacity capacitor, and as the main high-frequency suppression module with small capacitance, the final output of positive and negative power supply voltage stability, the principle diagram is as follows:
The design of the buck DC voltage regulator works:The first 220V voltage through the transformer T with center tap of step-down transformer secondary output T dual 12V AC, and then after double switch S switch control, and then sent to 12V AC double bridge rectifier rectifier is composed of D1~D4, T of the center tapped transformer grounding, DC rectifier output by a capacitor C1 C4, (2200UF) of the filter, and then the capacity C2, C3 (0.1UF) composed of high frequency filter, the output stability of the positive and negative double 12V DC power supply.

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