Urux5RP

78xx+79xx dual power supply board

Overview

This project is used to verify the solution verification board design of the 78xx and 79xx series linear voltage regulator chips of Lichuang Mall (product number: C38744/C232428/C38743/C38742, etc.).

Since different manufacturers have different chip pin definitions, please use the chip selection in the BOM or check it according to the manual before use.

The 220V mains power is input into the module through 15V and 9V transformers. The module can be rectified and stabilized to ±12V and ±5V output. Each dual power supply provides two terminal block outputs and one DC socket output (5.5×2.5).

The maximum current is 1.5A. The 78xx part is a positive voltage output and the bottom pad is ground; the 79xx part is a negative voltage output and the bottom pad is input.

Design Files

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2025-06-23 04:03:52

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