[AMRadio] Voltage regulator

Donald Chester k4kyv at hotmail.com
Tue Mar 21 16:35:11 EST 2006

>Some of my antenna relays have protective diodes and some don't.  If a 
>power supply were to be used only for switching relays, could the 
>protective diode be placed at the output of the power supply, rather than 
>at the relay?

To me, the diode acts more as a protector of the switch or pilot relay 
contacts.  If the DC power supply has a filter capacitor at the output, the 
capacitor will look like a short to the inductive kick from the relay coil.  
If there is a regulator circuit, the spike could wipe out some of the solid 
state devices there.


This message was typed using the DVORAK keyboard layout.  Try it - you'll 
like it.

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