I am testing an active lowpass filter based on the LM833 Opamp. Basically I am testing different values of power supply to see how they affect the output.
I first tried the 5V from Arduino, all ok except the signal gets distorted.
In an attempt to improve the output signal I connected the opamp with a 9V external DC power supply. I thought it should work, since 9V is far below the Max VCC accepted by the LM833. Well I was wrong. The device started to smell very bad. It's because of the current? The power supply can supply up to 1A. What am I doing wrong?