On 7/7/14, 9:11 AM, Peter Torelli wrote: > I've had luck using a Motorola MC34063A to drive up to 80V. It's basically > all the buck/boost guts plus peak current sense and its own internal > oscillator, it can regulate up or down based on the configuration. Check it > out.
Actually, that's what I was going to use for the 7.2->40. (I've used a 34063 to go up to ~150V or so for nixie tubes, but in my current project, I have to drive the ringer with an H-bridge that tops out at 40.) The part I'm really unsure about is the USB->7.2V NiCd charging. -- Mersenne Law LLP · www.mersenne.com · +1-503-679-1671 - Small Business, Startup and Intellectual Property Law - 9600 S.W. Oak Street · Suite 500 · Tigard, Oregon 97223
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