Re: cheap 200A AC to DC power supply?
- From: Don Lancaster <don@xxxxxxxxxx>
- Date: Sat, 18 Nov 2006 17:51:44 -0700
Fred Bartoli wrote:
Arlet a écrit :
Tony wrote:
If you can insulate the Peltier elements, it would generally be easier
to provide 170VDC at 17A. If the insulation is REALLY good, you could
just rectify and filter the 120VAC, or preferably work up a PFC front
end to provide both regulation and an input current waveform that
doesn't trip out every breaker you connect it to .... or else rethink
the project or the budget.
The filter needs to be pretty good, otherwise the quickly fluctuating
temperatures cause mechanical stresses which severly reduce the
lifespan of the Peltier elements.
That's bollocks. You'll have to have a huge LF ripple to kill your TECs.
Any decently (read not completly screwed) designed PWM supply will give you as long a lifespan as a DC battery.
--
Many thanks,
Don Lancaster voice phone: (928)428-4073
Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
rss: http://www.tinaja.com/whtnu.xml email: don@xxxxxxxxxx
Please visit my GURU's LAIR web site at http://www.tinaja.com
.
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