Re: [KPA500] Rear power switch thread
Posted by
Richard Fjeld on
URL: http://elecraft.85.s1.nabble.com/KPA500-Feature-Request-tp7045355p7049453.html
The statement below caught my eye, and I thought I would comment FWIW. A few decades ago, the part of the city I lived in had a momentary open on the power line. When power came back on a moment later, it had a high voltage spike that took out many, many, colored TV sets (and other things) back when color TV sets were relatively new and expensive.
I thought of my ham equipment, so I got a metal box and mounted a 110 Volt relay on it that fed some outlets attached to boxes on both sides. I bring up the relay with a momentary push switch. The relay then locks up to it's own contacts. To release the relay, I press another momentary switch to open the path to the coil.
This way, I plug in all equipment I want to protect to the box. If a momentary open hit occurs, the relay drops and powers off all my equipment (which has happened). It is my master power switch as well.
I power off all my equipment before I release the relay to reduce contact arcing when I re-operate it. The original relay is still in use.
Dick, n0ce
_________________________________________________________________
Personally, I simply kill the main supply power line to the station. That
> does the same thing with one switch.
>
> 73,
>
> Ron AC7AC
Richard Fjeld, n0ce
[hidden email]
E=IR, it's the law.
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