I have read with interest the recent postings on the Astron Power
Supplies and Crowbars.
Question - has this problem been primarily with the "switching" power
supplies or the transformer based power supplies?
We have a Astron RS-20A and a RS-35A that we have been running for a
couple of years without problems in a high RF environment.
Have the switching power supplies such as the SS-25 and SS-30 from
Astron had any known problems?
Thanks
Steve Hansen
--- In Repeater-Builder@yahoogroups.com, "skipp025" <[EMAIL PROTECTED]> wrote:
> Most of the crowbar problems I've sourced once
> past the Astron regulator board were traced to
> weak filter caps of aged units.
>
> The crowbar circuit works well.
>
> skipp
>
>
> > "Daron J. Wilson" <[EMAIL PROTECTED]> wrote:
> > > Let's not lose sight of the fact that the motor circuits that are
> > > generating the spikes should be examined for ways to reduce or
> > eliminate
> > > same. Moreover, tinkering with the power supply crowbar circuits
> is
> > > really treating the symptom rather than the problem.
> >
> > I have to disagree. Both of my rack mount 50 amp supplies have done
> > this, on remote sites or in the garage with NO problem on the input
> > side. If you try to draw more than 10-12 amps when you turn them
> on, it
> > immediately crowbars. The only way to get it to run is to turn it
> off,
> > drain the caps, remove the load and turn it back on. Then you can
> > attach the load *spark* and it works fine. That is the design flaw
> that
> > I feel needs to be corrected.
> >
> > 73 N7HQR
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