Hi everyone,
I'm trying to implement a Wien Bridge oscillator running at 500KHz. For that I'm using a TL071CP Operational Amplifier with values on the positive feedback of C=100pF and R=3K2. The problem is that I'm obtaining more or less half of the frequency. In a first moment I thought about the parasitic capacitances as a possible problem. I tried to use higher values of C and lower of R but the problem is still. Do you think that the problem is of the Operational Amplifier??? Maybe the Gain Bandwith product is too small.
thank you very much
I'm trying to implement a Wien Bridge oscillator running at 500KHz. For that I'm using a TL071CP Operational Amplifier with values on the positive feedback of C=100pF and R=3K2. The problem is that I'm obtaining more or less half of the frequency. In a first moment I thought about the parasitic capacitances as a possible problem. I tried to use higher values of C and lower of R but the problem is still. Do you think that the problem is of the Operational Amplifier??? Maybe the Gain Bandwith product is too small.
thank you very much