Hello,
I'm trying to design an ultrasonic range finder using only analog components. So far I've designed the Wien Bridge and one amplifier. The problem is that I'm trying to create a band-pass filter in the amp loop. While my calculations show that the filter's band is between 35.367-41.882kHz which is fine (I think ) since the incoming wave is ~38kHz, the bode plotter shows a different band:1-1MHz. Maybe one of my connections is wrong? Or the plotter is wrong? I'll be happy to hear any input you might have on the matter or how to improve the circuits.
Thank you,
A
I'm trying to design an ultrasonic range finder using only analog components. So far I've designed the Wien Bridge and one amplifier. The problem is that I'm trying to create a band-pass filter in the amp loop. While my calculations show that the filter's band is between 35.367-41.882kHz which is fine (I think ) since the incoming wave is ~38kHz, the bode plotter shows a different band:1-1MHz. Maybe one of my connections is wrong? Or the plotter is wrong? I'll be happy to hear any input you might have on the matter or how to improve the circuits.
Thank you,
A