DIY Amplifier based on TDA1557Q

It's simple to build.
I'm using power suply from old AT PSU. Low picture quality because I using my PDA, may be I need a good camera :)






Comments

cdx2000 said…
Thanks so much.
Anonymous said…
what is the purpose of resistors on this board?
Anonymous said…
To prevent HUM from input? I made amp something like yours but without resistors, work fine with battery operated device (MP3)player ,but when I put as input cd player from computer start to huuum. those resistors will prevent this hum?
thanks in advance.
cdx2000 said…
First, using battery for cd player from computer, if hum you must using input resistors, if not, send me your power supply schematic.