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DC±12V design

Overview

(+12V display)

(-12V display)
Power supply: 2-hole 8-pin plug power supply, equipped with a boat-shaped switch, more stable household power supply
Transformer: dual 12V output, reserved position in the schematic diagram, place the pad connection in the PCB Possible
capacitors: large capacitors filter low frequencies, small capacitors filter high frequencies, and the circuit pattern is more stable.
Voltage stabilizing chips: 7812 and 7912. The rectified voltage is output by the voltage stabilizing chip. 7812 provides +12V, 7912 provides -12V (heat sink is installed in the PCB)
Resistor: provides load for the circuit, and the output is stable.

Attached: schematic diagram, PCB, 3D diagram

Design Files

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Update:2025-05-12 11:39:49

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