Hi guys, I just finished builing my gainclone on a PCB i designed in Protel.
I tested the amp before connecting it to a heatsink for DC offset and it was at ~20mV for both amps. Then I connected it to a speaker and this is when I noticed a hum sound which increased to a higher pitched sound over about 5 seconds. I figured I could test out the amp at low volumes before I attached it to a heatsink (which I am yet to purchase).
Can you check this amp at all without some kind of heatsinking or is it not going to work? Could this cause this weird sound I am hearing or is it my PCB design (which is attached)?
Any help would be great thanks
-Mikey
I tested the amp before connecting it to a heatsink for DC offset and it was at ~20mV for both amps. Then I connected it to a speaker and this is when I noticed a hum sound which increased to a higher pitched sound over about 5 seconds. I figured I could test out the amp at low volumes before I attached it to a heatsink (which I am yet to purchase).
Can you check this amp at all without some kind of heatsinking or is it not going to work? Could this cause this weird sound I am hearing or is it my PCB design (which is attached)?
Any help would be great thanks
-Mikey