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Reply-To: "Dave M"
From: "Dave M"
Subject: Re: DC/DC converter for LCD Panel Meter
X-Newsreader: Microsoft Outlook Express 6.00.2600.0000
Date: Mon, 02 Sep 2002 23:44:04 GMT
NNTP-Posting-Date: Mon, 02 Sep 2002 23:44:04 GMT
Organization: AT&T Worldnet
When I responded to the OP, I didn't see anything that said that he had a
'control transformer' available... just that he wanted to run his DPM from a
DC source. He didn't mention that his DC-DC converter was of the isolated
type; that's why I offered that advice. Had he posted those facts, I
probably would have suggested that he add a bit of capacitance to the output
of his converter to make sure that the DPM was getting clean power. He
didn't say how much ripple/noise was present on the converter's output.
Dave M email@example.com
Remove the xx for my correct email address
"Lizard Blizzard" wrote in message
> Dave M wrote:
> > Look at the DC-DC converters at www.mpja.com. They have a few with
> > 9VDC outputs, both regulated and non-regulated. Prices range from $1.95
> > $4.95. I'm sure that will solve your problem. Good luck.
> > I've used these converters from MPJA with the same type of meters and
> > work just fine.
> Excellent advice, but I don't see why he needs to obtain another
> converter when he has AC available from his control transformer's
> secondary. All it takes is a couple non-polarized capacitors to keep
> the DC out of the rest of the circuit, and a rectifier or FW bridge and
> filter cap.
> > --
> > > A separate power xformer is also an option, but I already have two,
> > > one for control circuitry, and a big 8A for the power output.
> > > Any help appreciated.
> ----------------(from OED Mini-Dictionary)-----------------
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