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Old 25th March 2012, 04:35 PM   #31
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ratings of tranformer please....
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Old 25th March 2012, 04:37 PM   #32
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24-0-24, 5A would be Ok, it will give around 34-0-34 V after rectification.. enough power for 2 8Ohm speakers. u'll get 40W+40W easily
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Old 25th March 2012, 06:30 PM   #33
johnr66 is offline johnr66  United States
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We are still talking about the TDA2050, right? The datasheet absolute max supply voltage is 50 volts or +/-25v. These small ICs need to get rid of a bunch of heat from the TO-220 package. I wouldn't push them beyond +/- 18 volt with 4 Ohm loads or +/-23 volts with 8 Ohm loads. They should be bolted directly to a heatsink of sufficient size with 5mm or more backplane.
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Old 25th March 2012, 06:36 PM   #34
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can any one send me good TDA2050 amplifier circuit diagram with dual power supply with pcb layout please....
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Old 26th March 2012, 11:08 AM   #35
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Quote:
Originally Posted by johnr66 View Post
We are still talking about the TDA2050, right? The datasheet absolute max supply voltage is 50 volts or +/-25v.
sorry i was talking abt the 3875 IC which i saw in the bass boost schematic. For TDA2050, 15-0-15 or 18-0-18 transformer will be good.
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Old 26th March 2012, 11:14 AM   #36
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hi kuldeepsingh
can you send me good TDA2050 amplifier circuit diagram with dual power supply with pcb layout please....
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Old 26th March 2012, 11:49 AM   #37
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As a matter of fact, i myself is having TDA2050 amp to assemble. i had finished the layout on a general purpose PCB, but still to do connections. Not finding time for that.

Circuit is same as available in datasheet. picture is shown in attachment.
layout is simple, left side is signal input & feedback, center contains power supply caps and right side is output with zobal network. Simple.
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Old 26th March 2012, 01:56 PM   #38
pra3718 is offline pra3718  India
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Last year I had build TDA2050 as per Rod Elliott's Project # 72, it was good sounding amp.
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Old 26th March 2012, 03:02 PM   #39
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Quote:
Originally Posted by pra3718 View Post
Last year I had build TDA2050 as per Rod Elliott's Project # 72, it was good sounding amp.
Ya, TDA2050 is a good chip and TDA7294 sialso very good for higher power. And best part is that these are easily and cheaply available in India.

Normally i have seen that DIYaudio is little more biased for LM series chips.
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Old 26th March 2012, 03:57 PM   #40
pra3718 is offline pra3718  India
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Quote:
Normally i have seen that DIYaudio is little more biased for LM series chips.
TDA series is cheap and easily available in my city. At my start-up stage, I played lot-off TDA series TDA2030,TDA2050,TDA7265,TDA7294 etc. Now I am playing LM series, its a matter of test which one is sounding best. LM1876 is good sounding chip for me. But I could not live long with it, because of low power.

In my city I have seen most of the cheap audio systems uses TDA2030 some of 5.1 system sounds really good. I always wanted to know how they produce such a bass from TDA2030 bridge, as well as treble also not bad.
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