Hello, this is my first post...
Ive been searching posts about this topic, but after reading, I dont really get my question answered. So Ill make it concicious:
Ive done a 20W amp with a tda2040 IC, just as its posted in general guitar gadgets (bah, with some modifications, i just added a pot for the volume and a jack for input). We tested the amp at university, with an ocilloscope and a big variable power supply, and it works fine.
My questions are: what transformer do I need for supplying enough power to this amp? It says i need 18v bipolar power. I plan on putting a 50w, 4ohm speaker as output.
I read that these bipolar power supplies in general guitar gadgets wouldnt work fine to supply the amp. So should i get a transformer and solder the secondary directly to the circuit?
What secondary should I buy? And how much Ampere should i look for?
Any other recommendations? (on the speaker / transformer).
Thanks!
Ive been searching posts about this topic, but after reading, I dont really get my question answered. So Ill make it concicious:
Ive done a 20W amp with a tda2040 IC, just as its posted in general guitar gadgets (bah, with some modifications, i just added a pot for the volume and a jack for input). We tested the amp at university, with an ocilloscope and a big variable power supply, and it works fine.
My questions are: what transformer do I need for supplying enough power to this amp? It says i need 18v bipolar power. I plan on putting a 50w, 4ohm speaker as output.
I read that these bipolar power supplies in general guitar gadgets wouldnt work fine to supply the amp. So should i get a transformer and solder the secondary directly to the circuit?
What secondary should I buy? And how much Ampere should i look for?
Any other recommendations? (on the speaker / transformer).
Thanks!