[NLRS] Power supply question. SEC-1223 Fan

Tue, 27 May 2003 00:01:15 -0500

Its odd, I would have figured that the fan would come on when the supply
started to build up some heat inside it.  Well, I guess it must not be
hurting it if they designed it this way.  I was worried that I got one with
a bad fan, so I opened it up and applied power to the fan leads to see if it
came to life, and indeed it did!  So, it wasn't the fan.  I wonder how the
thermal sensor setup they use determines when to run the fan, that is what
actual temp of what device causes it to run.  I know I have the paperwork
that came with it some where but cant find it right now after spring
cleaning the shack.

I think I will buy at least one more for running some accessories.  Maybe
even buy a third for a spare and bench supply.

73,

Scott, KB0NLY

----- Original Message ----- 
From: "Dave Aho" <[email protected]>
To: "Scott L." <[email protected]>; "NLRS" <[email protected]>
Sent: Monday, May 26, 2003 11:29 PM
Subject: Re: [NLRS] Power supply question. SEC-1223 Fan

> Scott,
>
>     Come to think of it, I don't remember the fan on
> mine coming on...or if it did it was for a brief
> second or so when we were testing it out with a brick
> running about 250 watts (supposedly drawing close to
> 25 amps)..plus the radio used in the test was attached
> to the supply also.  When I have used it on the TS
> 120S it never came on...even in a constant FD
> operation last year when I ran a pileup.  It has not
> really ever gotten severely warm or has really made
> those strained grunting noises..*LOL*, but it does
> supply power for a good 250+ Watt (on the meter) heavy
> test with no problem.  I have also not noticed a lot
> of hash noise..if there is some it is VERY miniscule.
> I want to pick a few more of these up myself...the
> only thing I wish it had was a front panel meter, but
> I suppose that is an easy project to remedy.
>
>         Dave....N9TTX
> --- "Scott L." <[email protected]> wrote:
> > That brings up a question that I have.  Is there
> > anyone out there using the
> > Samlex SEC-1223 that have experienced the fan
> > running in this supply?  It
> > has a fan so it must be used on occasion, however, I
> > have pushed it to 23
> > amps draw for long enough periods of time to cause
> > it to become warm to the
> > touch, but the fan has yet to run.  Does this supply
> > have to literally cook
> > before the fan is required for cooling??  I haven't
> > had any problems with
> > it, and intend on buying another one to run some
> > other accessories.
> >
> > Just a thought!
> >
> > 73,
> >
> > Scott, KB0NLY
> >
> >
> > ----- Original Message ----- 
> > From: "Clair J. Robinson" <[email protected]>
> > Cc: "NLRS" <[email protected]>
> > Sent: Monday, May 26, 2003 8:50 PM
> > Subject: Re: [NLRS] Power supply question.
> >
> >
> > > I also have a Samlex SEC-1223 which I use to power
> > an FT-897. I have
> > > heard no noise from it whatever. It gets ever so
> > slightly warm when in
> > > use and I don't think I have ever heard the fan.
> > The board inside, as
> > > near as I can tell, is identical to that in the
> > Yaesu FP-1023 and also
> > > to that in the Radio Schlock 23 amp switching
> > supply. A friend, K0LR,
> > > bought on of the RS units on sale and finds no
> > noise or other problems
> > > with it, either. Best thing is that they are so
> > light weight.
> > >
> > > 73, CJ K0CJ
> > >
> > > "Scott L." wrote:
> > > >
> > > > I really like the Samlex SEC-1223 for running my
> > FT-847.  No power
> > supply noise here, and it supplies all the power I
> > need.  Also, it is almost
> > exactly the same as the Yaesu FP-1023 when you look
> > inside both of them.
> > Coincidence?  I think not, it looks as if Samlex
> > produced the power supplies
> > that Yaesu put there name on.  Take the covers off
> > both and you will see how
> > similar they are.  And the Samlex costs under a
> > $100.
> > > >
> > > > Yep, the 6m opening yesterday was fantastic.
> > Had a friend stop by, and
> > he asked me if I was tuning around and listening on
> > 20 meters, then when he
> > saw the display and the frequency his jaw dropped!
> > > >
> > > > 73,
> > > >
> > > > Scott, KB0NLY
> > > >
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