DC-DC converter circuit sg3525 SMPS control IC based on the 900w power can give power transformers used the etd59 output 4N25 opto-isolated with 12 volt input with symmetrical + – 70 volts total of 140-volt outlet is giving auto... Electronics Projects, 12V to 70V DC DC Converter Circuit SG3525 900W "dc dc converter circuit, power electronic projects, sg3525 circuit, " Date 2019/08/02