Logic Power Control circuit diagram for 78xx Regulator

Published:2013/3/28 4:12:00 Author:Ecco | Keyword: Logic Power Control , 78xx Regulator | From:SeekIC

Logic power control of analog regulator can be useful in application where a digital circuit/controller need to control power source, such as in EEPROM programmer or other power controls. This is a circuit provide ON-OFF control for 78xx regulator using digital (TTL or CMOS) signal level. This circuit uses transistors in series with the 78XX regulator, which it’s base is controlled by logic level input. Here is the schematic diagram of the circuit:



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