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Positive and negative dual power supply module

 
Overview
This is a low-ripple, low-noise dual-power supply module with a measured ripple of around 10mV. It uses a Buck + LDO scheme, which has the disadvantage of higher cost but the advantage of greater stability. The supply voltage can be changed by adjusting two potentiometers.
Currently, the LDO+ output voltage is around 15V, which can be changed by altering the values ​​of resistors R11 and R12. The specific calculation formula is shown in the schematic diagram.
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Update:2026-03-27 01:24:36

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