Tweet
I am building my own PI detector, which is still in prototype stage. Wanted to know few things:
1) How do I remove 60Hz noise, to make detector more stable in urban areas? I am working at about freq of 400hz and Tx at about 100us.
2) For integrator what should be the optimum gain and time constant? I am having a gain of 1000 and time constant 200ms. Is gain of 1000 an overkill for the integrator? Sample pic of signal at integrator 10mv/div and timebase of 5ms. Is this the correct waveform that you get at integrator that we should get or is it highly unstable?
My PreAmp using LM318 @2V/Div:
This is how integrator looks like at 10mv/div and time base of 5ms:
My lil setup:
I want to discuss more about my PI but right now I am myself a bit confused :confused: . Will write more later until then please provide some info about the above points. I think it would be valuable for all the amateurs engineers here on the forum.
1) How do I remove 60Hz noise, to make detector more stable in urban areas? I am working at about freq of 400hz and Tx at about 100us.
2) For integrator what should be the optimum gain and time constant? I am having a gain of 1000 and time constant 200ms. Is gain of 1000 an overkill for the integrator? Sample pic of signal at integrator 10mv/div and timebase of 5ms. Is this the correct waveform that you get at integrator that we should get or is it highly unstable?
My PreAmp using LM318 @2V/Div:
This is how integrator looks like at 10mv/div and time base of 5ms:
My lil setup:
I want to discuss more about my PI but right now I am myself a bit confused :confused: . Will write more later until then please provide some info about the above points. I think it would be valuable for all the amateurs engineers here on the forum.