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Chip Amps Amplifiers based on integrated circuits

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Old 9th May 2003, 01:37 AM   #11
elizard is offline elizard  Canada
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well allright, that was the answer i was looking for

now .. while waiting .. i MIGHT look into buying a regulate PS from ebay ..
the only problem is i know NOTHING about them and their quality

there doesn't seem to be any of the cheap HP ones in canada (as someone mentioned they got one for like $30 plus s&h) ..
ordering a 50-100lb item from the states would cost me an arm, a leg, and my entire paycheck
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Old 9th May 2003, 02:02 AM   #12
Philo is offline Philo  United States
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Like many things on ebay... It's a crap shoot sometimes. Jackinnj seems to be the expert on used test equipment from ebay. If you shoot him an email he might give you some good brands to look for. Just make sure you get a "not DOA" gaurantee on the unit to CYA.
"If you didn't make it with your own two hands, its not really yours".
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Old 9th May 2003, 08:11 AM   #13
moamps is offline moamps  Croatia
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Originally posted by elizard
hmmz .. still no answer
am i to believe it can't be done? should i give up and just humbly wait for my toroid?


You can try half wave rectifier. With transformer with only one secondary you can get symmetrical power supply. Ripple is bigger, caps must be doubled, but work just fine for experimental purpose.

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Old 9th May 2003, 12:02 PM   #14
elizard is offline elizard  Canada
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thanks moamps .. i'll give that a try sunday (no time prior to then! now THAT sucks)
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Old 11th May 2003, 07:21 PM   #15
elizard is offline elizard  Canada
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she works she works she works

i just tried moamps suggestion for the temporary PS .. after a little tinkering it put out 19.5V .. good enough for now

hooked up the GC (one at a time) .. turn on (hold my breath) .. no smoke .. one works
plugged in a crap speaker, works
same for the second one

one of them however, there's a short somewhere i'm sure .. when i move the resistor slightly it starts to hum ..
gonna fix that ..

but until then .. i'm gonna enjoy this

thank you Peter, moamps, philo .. and whoever i forgot

this is sweet .. WOW!!!!!!!
ok .. gotta get myself off of here while i still can
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