found a great poower supply!!
Posted: Mon Mar 07, 2005 8:48 pm
Marco,
I pulled apart an old VCR and yanked out the power supply. Found that it had multiple outputs. 1@45v, 3@14v, 1@12v, and 1@30v(reversed polarity). These measurements are w/o a load. When I hooked it up to my MAX II X-mitter, the voltage dropped from 14v to 12v.
I would like to use the 45v output with a variable resistor in series to knock it down to no more than 16v. What would be a good resistance or "part#" to use safely without blowing the exciter up? If I remember, the current wouldn't change if I run the var-resister in series...right? (it has been about 25 years since my education & somethings I just forget...sometimes).
BTW, this is one CLEAN power supply. I was using a home-made one I built off the web, kind of a sloppy job too, and had a few interference problems (mainly it would cause some wavy lines on TV channel 4 over about 1,000 feet). With this PowerSupply the interference is GONE. The signal sounds better to me also (but this may just be an audio "placebo" effect).
Any help I would appreciate. By the way, thanks for taking time for things like this and all the help you give others too!!!
RadioMan
I pulled apart an old VCR and yanked out the power supply. Found that it had multiple outputs. 1@45v, 3@14v, 1@12v, and 1@30v(reversed polarity). These measurements are w/o a load. When I hooked it up to my MAX II X-mitter, the voltage dropped from 14v to 12v.
I would like to use the 45v output with a variable resistor in series to knock it down to no more than 16v. What would be a good resistance or "part#" to use safely without blowing the exciter up? If I remember, the current wouldn't change if I run the var-resister in series...right? (it has been about 25 years since my education & somethings I just forget...sometimes).
BTW, this is one CLEAN power supply. I was using a home-made one I built off the web, kind of a sloppy job too, and had a few interference problems (mainly it would cause some wavy lines on TV channel 4 over about 1,000 feet). With this PowerSupply the interference is GONE. The signal sounds better to me also (but this may just be an audio "placebo" effect).
Any help I would appreciate. By the way, thanks for taking time for things like this and all the help you give others too!!!
RadioMan