Topband: 12 volt relays

[Thomas]

Rick D wrote:

>Well gents, I'm an engineer and apparently a lot of the rest of you are also....... spending 3 days fixing a $5.00 transistor radio is not unusual......... but for gosh sakes, how hard and cheap is it to throw together a 24 v power supply instead of screwing with schemes to run the relays off 12 volts?
>
>Just a thought.
>
>
>Rick Darwicki  -= N6PE =-
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>17775 Elmhurst Circle
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Rick,

That is an easy solution. But I think you missed the point that I was 
attempting to keep my entire system powered by a single 12 to13.8V 
storage battery for emergency purposes. Then the task is not quite so 
direct. I think the thread was also useful because it  makes potential 
users of a  seemingly acceptable circuit aware that it doesn't perform 
to the level expected.

As I mentioned in one of my earlier post, I am pursuing the boost 
regulator approach and now have a couple of  MC33063AP ICs on order. 
I'll provide the schematic to those who have expressed interest in a 
circuit after I've had a chance to build it on the bench.

Thomas - AC7A