Monday, May 2, 2016

Simple transformerless power supply circuit for AA battery charger from 240 volt AC

A simple transformer-less power supply circuit for AA battery charger that I've yet to test - will take sometimes to get all the components and getting it tested.



The circuit schema was designed using https://easyeda.com/editor

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Adjustable DC to DC step up voltage booster using LM2577 -Adj P+ chip

One simple circuit to step up voltage using LM2577 -Adj P+ chip. The schematic is from Texas Instrument and it works expected - and below is...