Watch video DIY - 12v DC to 3.7v and 4.2v Volt Converter Circuit Diagram With LM317 IC || How to convert Volt online without registration, duration 03 minute 41 second in high hd quality. This video was added by user Yellow Purple 01 March 2023, don't forget to share it with your friends and acquaintances, it has been viewed on our site 21 thousand once and liked it 291 people.