bananasiong
New Member
Hi,
I'm currently learning Wein Bridge oscillator, start from the one without amplitude control. From simulation, I can get the expected result. But when I did experiment, it didn't work. The CRO shows nothing, just a flat line. Even I've increased the feedback resistor to be more than twice of R1.
I think I know what's the problem, it is GROUND. From the attachment (red circled), if the GND is not connected, the output is flat line. But how should I connect a GND in practical? There is no GND with the power supply.
Thanks
I'm currently learning Wein Bridge oscillator, start from the one without amplitude control. From simulation, I can get the expected result. But when I did experiment, it didn't work. The CRO shows nothing, just a flat line. Even I've increased the feedback resistor to be more than twice of R1.
I think I know what's the problem, it is GROUND. From the attachment (red circled), if the GND is not connected, the output is flat line. But how should I connect a GND in practical? There is no GND with the power supply.
Thanks