For a really cool idea from William Kitchen see:
http://techref.massmind.org/power/regulators
or if you don't do JavaScript:
http://techref.massmind.org/techref/default.asp?url=power/regulators.htm

James Newton
mailto:jamesnewton@geocities.com
1-619-652-0593 phone


----- Original Message -----
From: German <netquake@INNOCENT.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Saturday, April 22, 2000 14:57
Subject: Driving Vpp.


> Hello!
>
> I'm working on a programmer (Pic&Avr) that will require
> 12-14V for Vpp. I've heard there are some single chip solution
> out there (maxim) but would like something else (transistor
> based or anything). My mcu should be able to drive the Vpp line
> at 0V(gnd), 5V (Vcc) and a hand-regulated Vpp (12-14V) (at will)
> Any schematic or idea is welcome!
>
> Thank you very much!
> ------------------------------------
> netQ <netquake@innocent.com>
> http://virtuaweb.com/picprog
> "Home of amateur PIC programmers..."
>
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>



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