I am trying to find a way to power a 20V 1A Ac circuit. using 12vdc Li-on or LI-po cells. The device has a 120vac to 20v 1 amp transformer, So I was thinking I could use a dc-ac converter and just tie into the primary circuit of the transformer, but I am assuming that using a dc-ac inverter will have a lot of wasted energy in the conversion, so I think that the dc-low voltage ac would be an easier and longer running circuit.
Any thoughts? any Ideas?
So i ordered a replacement 20v AC 1 A transformer, didnt realize but it has 2 primary leads and 3 secondary, so i powerd the primarys and check the leads to see which two had 20V AC. Soldered them into the board and fliped the switch and pop went the fuse. Tried the 11V circuit of the other leads and no fuse pop, but the amp does not produce any sound and it appears one of the transistors is getting very very hot. Any ideas?
Additionally i took the old transformer apart and found the parimary lead wires to the coil burnt but rhe secondary seems intack can i check the se ondary windjngs in anyway to make sure we specked the transformer properly?
Thanks for all the help everyone!