piclist 2002\10\14\161651a >
Thread: Power handling for a sleeping PIC system
face BY : Wagner Lipnharski email (remove spam text)

Anand Dhuru wrote:
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This can give you some ideas. Performance is horrible, and if switching
time is slow the transistors will collapse.
Much better designs can be done. Perhaps the use of a commercial charge
pump or even a coilled step up system, check the very low cost MC34063.

         |   D        D      Vout <+5.5V
   |     |        |        |
   R     |        |        |
   |     E        |+       |+
   o---B PNP     ===      ===
   |     C       ---      ---
   R     |        |        |
   |     |        |        |
o---o     o--------'       _|_
   |     |
   R     |
   |     C
   o---B NPN
   |     E
   R     |
   |     |
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http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

<028e01c273be$264790c0$9acc1b18@cfl.rr.com> 7bit

See also: www.piclist.com/techref/power.htm?key=power
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Subject (change) Power handling for a sleeping PIC system

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