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Design and Simulation of Adjustable DC Regulated Power Supply Based on LM317

With the development of power integration technology, the power regulator, comparison amplifier, reference voltage circuit and sampling circuit in DC voltage stabilizing circuit are integrated on one chip and have been widely used in various electronic devices. Starting from the circuit schematic diagram of LM317 adjustable DC regulated power supply, this paper expounds the bridge rectifier circuit, capacitor filter and LM317 regulated power supply in the circuit structure. The circuit is built and simulated by Multisim software.