Topband: Voltage along coax feeder

[Les Kalmus]

Dave,

For design parameters check out: http://en.wikipedia.org/wiki/Bias_tee

I use a home brew one for reversing remote beverages which is a .1uf cap 
and any small rf choke in the 100uh and up range that will handle relay 
current.
In my case the relay current I used as a minimum design level was 150ma. 
You can buy them or use a binocular core and wind one.
I use only +/- 12v dc, not ac.

73, Les W2LK


On 3/26/2013 4:48 PM, David Cole wrote:
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> Could anyone please point me in the direction of a circuit to feed +12 -12 and AC along the feeder to my beverages to switch 3 relays - thanks all from Dave in the UK
> All good topband ops know fine whiskey is a daylight beverage.
> _________________
> Topband Reflector
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