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I dont know how to wire this simple amp

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6PTsocket:
OOPS !! I stand corrected. I never went through all the data sheets. It will run from a single or split power supply. Is one  preferable? It is not a whole lot more work to build a split supply.
--- Quote from: 6PTsocket on September 02, 2018, 02:29:06 pm ---I just looked at the TDA 2030A data sheet and there is nothing to suggest that it was ever intended to run with a single ended supply voltage. The specs are +or- 6 to + or - 22 volts. What was misread as two grounds were the actual ground and the minus power supply connection. A pair of 9 volt batteries would work for as long as they lasted, which might not be much.

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--- End quote ---

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mariush:

--- Quote from: 6PTsocket on September 02, 2018, 04:16:24 pm ---OOPS !! I stand corrected. I never went through all the data sheets. It will run from a single or split power supply. Is one  preferable? It is not a whole lot more work to build a split supply.

--- End quote ---

Split power supplies save you one big capacitor (in series with by the speaker with single power supply).Also makes easier to do bridge amps (see datasheet for example), to use 2 x tda2030 with one speaker to get more power.

anyway, for experiments, it may make more sense to buy some tda2050 chips and use example circuit from datasheet or google and you'll find complete schematics on dyi sites.
from memory tda2050 works from 10v and up (or -5v and 5v) so it would be very easy to use with a 12v atx power supply or a laptop adapter

6PTsocket:

--- Quote from: mariush on September 02, 2018, 04:40:08 pm ---
--- Quote from: 6PTsocket on September 02, 2018, 04:16:24 pm ---OOPS !! I stand corrected. I never went through all the data sheets. It will run from a single or split power supply. Is one  preferable? It is not a whole lot more work to build a split supply.

--- End quote ---

Split power supplies save you one big capacitor (in series with by the speaker with single power supply).Also makes easier to do bridge amps (see datasheet for example), to use 2 x tda2030 with one speaker to get more power.

anyway, for experiments, it may make more sense to buy some tda2050 chips and use example circuit from datasheet or google and you'll find complete schematics on dyi sites.
from memory tda2050 works from 10v and up (or -5v and 5v) so it would be very easy to use with a 12v atx power supply or a laptop adapter

--- End quote ---
There is a little speaker protection with a cap against power supply imbalance failure damage  but I never had any problems with my old Sony 110W per channel direct coupled amp. I would go with a split supply.

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Audioguru:

--- Quote from: mariush on September 02, 2018, 04:40:08 pm ---it may make more sense to buy some tda2050 chips..... so it would be very easy to use with a 12v atx power supply or a laptop adapter
--- End quote ---
The TDA2050 is obsolete and is not made anymore. Digikey has none.
With a 12V supply its output power was only 2W if the speaker was 4 ohms or 8 ohms.

Zero999:

--- Quote from: Audioguru on September 02, 2018, 07:17:03 pm ---
--- Quote from: mariush on September 02, 2018, 04:40:08 pm ---it may make more sense to buy some tda2050 chips..... so it would be very easy to use with a 12v atx power supply or a laptop adapter
--- End quote ---
The TDA2050 is obsolete and is not made anymore. Digikey has none.
With a 12V supply its output power was only 2W if the speaker was 4 ohms or 8 ohms.

--- End quote ---
TDA2050 amplifier modules are still widely available on ebad, probably using new old stock parts, more than fakes.  The LM1875 is a suitable replacement, according to Google.

Yes, an IC designed for 12V operation should be used, perhaps the LM4940 can be bridged to give around 4W into an 8Ω load, with reasonably low distortion?

http://www.ti.com/lit/ds/symlink/lm4940.pdf

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