install Echo Board in Cobra 29LTD

gundoctor · Post by **gundoctor** » Friday 27th Apr 2007, 12:36

I have an echo board out of an old Galaxy 99. I want to put it in a Cobra 29 LTD Classic. The problem is it needs 8 volts for the power.
Does anyone know where I can connect to 8 volts?

kc8mob · Post by **kc8mob** » Saturday 28th Apr 2007, 1:12

get a 7808 and chasis mount it by the power plug. Simpel IC voltage regulator

gundoctor · Post by **gundoctor** » Saturday 28th Apr 2007, 2:09

Thanks. I was thinking about tapping the emitter side of TR23, but I'd rather it just have it's own with the 7808. Thanks for the input!

Rick · Post by **Rick** » Saturday 28th Apr 2007, 8:05

You can safely pick up 8 volts at the emitter of TR28, if you need the transistor to handle more current change it to a 2SD926 with a 1 watt Zener.

Rick.

nomadradio · Post by **nomadradio** » Saturday 28th Apr 2007, 19:58

That echo board shouldn't pull much more than 15 or 20 mA. Won't overload TR28.

73

gundoctor · Post by **gundoctor** » Sunday 29th Apr 2007, 5:40

Thanks, I'lll just pull it from the emitter of TR28 then.

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install Echo Board in Cobra 29LTD

install Echo Board in Cobra 29LTD

Re: Install Echo Board in Cobra 29 LTD classic.