[Milsurplus] BC-611 power

[Dave Maples]

All: How about this: a 12 V fil xfmr (Signal transformer makes some good
PC-mount jobs) fed with a pair of transistors driven by an LM555C
oscillator.  I'm lazy and don't want to do the feedback routine.  You could
even have the thing run at 60 Hz if you wanted to that way.

Dave WB4FUR

-----Original Message-----
From: milsurplus-bounces at mailman.qth.net
[mailto:milsurplus-bounces at mailman.qth.net]On Behalf Of Richard Arland,
W3OSS
Sent: Wednesday, February 14, 2007 7:01 PM
To: ersmar at comcast.net; Al Klase; B. Smith
Cc: MILSURPLUS
Subject: Re: [Milsurplus] BC-611 power


OK, all this talk about power supplies for portable MilCom gear got me
talking to N3PBR, my next door neighbor, who is an adjunct professor of
Electrical Engineering at Wilkes University here in town.

My thoughts were to suggest to Dave that his undergrads needed a project:
design, prototype and produce a dc-to-dc converter for BC-611s,
PRC-6,8,9,10, etc, etc. He didn't say "no" so we may be onto something here.
It will keep our money in the States and I have indicated that the units
need to be serviceable not potted in epoxy as some imported units are.

Comments?

73 Rich W3OSS

Frengi should have been boatanchor/MilCom collectors:

Frengi Rule of Acquisition #  6: Never allow family to stand in the way of
profit.
Frengi Rule of Acquisition #22: Expand or DIE!
Frengi Rule of Acquisition #23: Nothing is more important than your
health....except your money!
Frengi Rule of Acquisition #45: One can never have too much.
Frengi Rule of Acquisition #73: A man is the sum of his possessions.

----- Original Message -----
From: <ersmar at comcast.net>
To: "Al Klase" <al at ar88.net>; "B. Smith" <smithab11 at comcast.net>
Cc: "MILSURPLUS" <milsurplus at mailman.qth.net>
Sent: Wednesday, February 14, 2007 4:31 PM
Subject: Re: [Milsurplus] BC-611 power


| Gents:
|
|     I, too, buy all my milbatts at the Dollar Store.  I really don't need
long service life for the few times I have my milrads on the air each year.
I save my money for important things like a metal brake and RS 9V batt
snaps.
|
|    CU in September?
|
| 73 de
| Gene Smar  AD3F
|
|
| -------------- Original message ----------------------
| From: Al Klase <al at ar88.net>
| > I have to agree with Breck.  Alkaline 9-volters are $2++ versus 50 cents
| > for Panasonic carbon-zincs at the Dollar store.  So that's $25 vs. $5
| > for a 90-volt battery.  If I get a few hours out of them, it's enough
| > for a season of fooling around.  I also have a GRC-9 and SCR-288 to feed
| > as well.
| >
| > Al
| >
| > B. Smith wrote:
| > > Like I said I have never had a problem, I only buy the "cheap"
batteries
| > > with good date codes. You are only probably  gonna use them for a
hamfest
| > > net or two and they should last a season. I do load test them with a
simple
| > > tester before loading the tray. Rarely do I find a bad one.
| > >
| > > breck k4che
| > >
| > >
| >
| > --
| > Al Klase - N3FRQ
| > Flemington, NJ
| > http://www.skywaves.ar88.net/
| >
| >
| > ______________________________________________________________
| > Milsurplus mailing list
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| > Help: http://mailman.qth.net/mmfaq.htm
| > Post: mailto:Milsurplus at mailman.qth.net
|
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