On Jul 29, 6:50*pm, "Dave Plowman (News)"
wrote:
In article ,
* *Steve Lupton wrote:

Dave Plowman (News) wrote:
In article et,
* *Dave Liquorice wrote:
I'd be surprised if a SMPSU would run down to 12v though most have a
lower voltage limit somewhere above 50v.

Eh? Both my current phone and the last one had SMPS. The current one
tiny and weighs less than a normal plugtop.

Input not output Most that I have come across seem to stop working at
around 80V

Ah. But there's no reason why an SMPS can't work from any voltage - I've
got a handy little circuit that produces 12 volts with an input of 3 - 30
volts.

Germanium switchers can run off a single solar cell


NT