I really need to step up my 3.7v to at least 6.2v. I don't want to spend money because boost converters in my country are STUPID expensive. You can give me a schematic. What I do have is: IRF520/510 Mosfet, Transistors (bc557/547/2n2222/2n3904) and a lot of capacitors and resistors.

DIY Voltage step up

6v6gt April 5, 2018, 6:39am 5

Depending on the current requirements, a simple voltage doubler circuit may be enough

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