Thanks for that clarifying answer by Tassieviking!
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Show posts MenuQuote from: DrGonz78 on September 05, 2018, 02:40:06 AMI would be guessing that the power transformer is 24vac w/ center tap and it results to a split power supply of -/+12vac. 12 * 1.41 = 16.92vdc. Check out your voltages on your amp to be sure.....-------------------------------------------------------------------
Now confirm your power supply voltages to make sure. Which if a 2030 chip suggests -/+18vdc supply then I would think its very close to that indeed.
Quote from: DrGonz78 on September 03, 2018, 12:45:19 AM
With the TDA2030A chip running 36v power supply or rather a -/+18v supply it will be max rated at 20 watts as per data sheet. So now you will have the TDA2050 in place that can handle 32 watts at 8 ohms or the claimed 50 watts with 4 ohm load. In those examples though it is with a power supply capable of delivering 50v or -/+25v from the power transformer. Your amp will still have the -/+18v power supply and will have a new chip that is highly overrated to your amp's power supply. Honestly looking at the TDA2030 data sheet I think it's really only putting out 14 watts RMS with a 4 ohm load. I would be surprised if the 4 ohm speaker caused any trouble for TDA2050 chip.
Quote from: Enzo on August 30, 2018, 05:47:46 PMThanks for all the info,Enzo! But Mouser DOES charge for shipping: prepaid it's $9.60,total, for 10 diodes.
Mouser charges for shipping, but if I recall, if you prepay, they don't, is that correct?
Quote from: Jazz P Bass on August 30, 2018, 01:55:06 AM
That is a most common diode.
You must place a 1N in front of it.
1N4007.
Quote from: g1 on August 27, 2018, 09:57:53 PMMy manual does say that the diode test reading is in millivolts, so the reading is .037V , as you said.
Does your meter explicitly mention volts somewhere when using diode test?
I'm thinking it is probably millivolts instead. Check a good diode and it will probably give you something in the 500 to 700 range when the diode is forward biased.
So your 37 reading is probably .037V on diode test.