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mostafagordy 17th November 2012 10:20 PM

help to select and correct 400w TDA2030A OR 200WTDA2030
3 Attachment(s)
please see below site project and help me to select best schmatic in this two


400w TDA2030A (2*200w)
TDA2030 köprü paralel ba?lant? 200watt anfi devresi | Elektronik Devreler Projeler 320 Volt


200w tda2030
TDA2030 200W Anfi Yeni Bask? Devre | Elektronik Devreler Projeler 320 Volt

Why difference in two circuit (mistake ):confused:
what is youre vote about old schematic ?
I OWN 2 TDA2030A NOW....

TANDBERGEREN 19th November 2012 02:27 PM

400W? 200W?

Sorry, no way.

If You are looking for an amp with such wattage, there is no possibility at all getting it out of theese ICs.
Never ever think of Watt when PMPO is one of the terms involved, wich is in this case.

Look around in here and You will find much better alternatives.

jaycee 19th November 2012 08:41 PM

There are no chip amps that will give you 400W into 4 ohms. For this sort of power level you need to build a discrete amplifier. By the time you have paid for the needed transformer, transistors and heatsinks, you will be able to buy a second hand PA amplifier that will do the job much cheaper.

mostafagordy 19th November 2012 09:55 PM

please see below site project and help me to select best schmatic in this two

sregor 20th November 2012 03:04 AM

Circuit is chip amp with discrete outputs and bridged. Comes pretty close to 200W into 4 ohms. Either side of bridge should put out about 15 rms volts at clipping which gives you 30 rms into bridged load - which is 225 watts IF the supplies hold up and the output transistors can take it. (Big heatsinks, hefty power supply and rugged output devicess) .

FWIW both circuits look about the same. What differences are you seeing? My 2cents.

wahab 20th November 2012 03:14 AM

The circuit on the right is from Elektor and can produce close to 200W/4R
according to the author , but this is unlikely given rails voltages sagging
under full load.

A better option would be to use TDA2040 wich are the same chips but with
slightly higher voltage and current ratings.

gmphadte 20th November 2012 05:07 AM

You have to fix these ics on separate heatsinks.

If u see the datasheet, TDA2030 is 18 watts power amp chip.

Gajanan Phadte

TANDBERGEREN 20th November 2012 05:16 AM

In both cases the power is given as "peak power", and should not be mentioned as the actual power output of any amplifier in my mind.

Agree with Wahab anyway, and I would used the ELEKTOR Cirquit.
A massive transformer is needed for this one anyway, in the pursuit of having stable rails.
500VA per channel at the very least.

MagicBox 20th November 2012 06:35 AM

I used to build these kinds of amps using the TDA2030's. The Elector schematic should work ok, but with amps based on this principle (discrete shunt output transistors), wiring and decoupling of the TDA2030 is extremely important for its stability. And yes, you have to make sure you electrically isolate them all from the heatsink. They're fun to experiment with and you can quickly pump out some watts :)

Boscoe 20th November 2012 07:11 AM

In theory with enough output pairs and bridged they could achieve 200Wrms 4R. The voltages work out whether the TDAs are actually up to the job or something else gets in the way I don't now.

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