Hi!Welcome to my DIY audio forum.CheersPer-Anders Sjöström
Started by Keljian, June 13, 2005, 04:54:06 PM
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Quote from: perandersR13 may be decreased, down to 2k2 is OK but at least so you'll see some light from the LED.I'm off now, see you next week.
Quote from: Keljianwell after changing the transformer, it works a charm...thanks for all your help PA.. oh .. I did some testing and you really need to feed it about 8-9v more than you want out of it.
Quote from: Keljianwelcome backI've always fed the regulator with the same 33.5v or soI killed it by shorting the back of the regulator (the lm317) to output ground. it is outputting 8.54v, r9 is 2.30 v or so.. I intend to change the LM329 today as the voltage across it relative to ground is 22v or sousing a thermal probe I measured the temperature when it was running properly the d44h11 was running at 70C and the LM317(with heatsink) was running at 60C (ambient approx 25C )
Quote from: perandersAs a permanent solution I think 70 deg C is a bit too much. Notice that the lifetime of the electrolythic caps will be shortened.
Quote from: KeljianI'm on the verge of giving up with this supply
Quote from: perandersQuote from: KeljianI'm on the verge of giving up with this supplyThis design is pretty easy to get working I have built a number of them and tehy all worked right away.The only thing you have to do is work carefully and don't rush.All things you have done so far are the result of that you have been eager to get it ready.You see have my reference design looks like, plan the changes, write them down, do some calculations if necessary and if you want some help just ask.I'll be back in a week.
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