Hello everyone, i am a young electronics geek, i love to build things for myself and friends. I recently built a small audio amp that I am hoping to sell, it runs off of two LM386 IC's. I am using a single 9v battery to power the whole thing, but i also have a 9v AC wall adapter that i want to use, however, it has an output of around 1 amp, and it cause the 100uf smoothing capacitor to get very hot very quickly. So i was wondering if i could get some help with a schematic to make an ac to dc converter, and maybe even bring it down to around .5 amps. i have searched the web for a circuit like that but most of them involve making an entire converter from 120VAC to 9V, but since i already have a wall adapter, i only need a smaller converter. Help would be greatly appreciated.