M
M
Mercury132020-04-28 05:49:47
Electronics
Mercury13, 2020-04-28 05:49:47

Amplifier on TDA2030A: better 12 or 15 volts?

Repairing speakers. Everything is cheap and dilapidated - the transformer is gone, because the wires have become brittle. The original was 13 volts. I will take the one that fits. Which is better to take: 12 or 15?
Circuit - amplifier on TDA2030A.
Speaker impedance - 4 ohms.

Answer the question

In order to leave comments, you need to log in

2 answer(s)
H
hint000, 2020-04-28
@Mercury13

Ok Google datasheet TDA2030A https://www.st.com/resource/en/datasheet/cd00000129.pdf
We look at the power: plus or minus 22V, i.e. 44V max. So 12 or 15 - it doesn't matter, as long as there is enough radiator, because. more supply voltage - more power - more heating - you need a larger radiator.

A
Alexey Kharchenko, 2020-04-28
@AVX

I recently collected from what was at hand, on this microcircuit, the trance was also installed, it came out about 12.5V - it works, but the sound quality is not very good. But I needed it purely for a small subwoofer, that was enough. But I plan to wind up the trance at least up to 14-15V, there is room for another 1 layer. According to the scheme on the Internet, for a unipolar power supply (the datasheet requires bipolar, of course), you need 18V (according to other sources, it works from 12V to 18V, and indeed it works).

Didn't find what you were looking for?

Ask your question

Ask a Question

731 491 924 answers to any question