USB chargers

capwizard

Badcaps Legend

Join Date: Jun 2016

Posts: 1991

Country: USA
#1

USB chargers

03-18-2017, 04:40 PM

Hola todos, USB chargers start to fill up your drawer, How can we use it?

A dozen USB chargers in the lab: Apple is very good, but not quite the best
http://www.righto.com/2012/10/a-doze...-apple-is.html

Apple iPhone charger teardown: quality in a tiny expensive package
http://www.righto.com/2012/05/apple-...n-quality.html

Cheapest SMPS Circuit Using MJE13005
http://www.homemade-circuits.com/201...-mje13005.html

I try to use as a Poorman's LED tester power supply from 5v boot up to 300v is that possible?

Dios esta contigo
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Last edited by capwizard; 03-18-2017, 04:48 PM.
Tags: None
capwizard

Badcaps Legend

Join Date: Jun 2016

Posts: 1991

Country: USA
#2

03-20-2017, 03:13 PM

Re: USB chargers

I swapped input to output transformer and change resisters above pic2. By input 3vDC best I got is 27vDC ?
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USB chargers

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