Other Parts Discussed in Thread: TEST, RC4558
I use RC4580 amplify audio signal in my circuit. Attached is the schematic. The RC4558 self-oscillation on Automobile Test Equipment of Simulated Solar Radiation. Net OUTSIDE RL connect to power amplifier. First I thought input of power amplifier have capacitor connect to GND. I simulate my schematic using spice and input capacitor of power amplifier will cause oscillation when it greater than 3nF. But manufacturer told me that they have putted the capacitor off. So I do not know why RC4558 self-oscillation ? Can you give me some suggestion? Thanks.