Hi everyone
Making a parallel plate capacitor 10x10cm with 10mm teflon in between as part of a science experiment.
200pF capacitor is charged to 4V, tiny amount of charge.
The plan is to take it to a desert (dry air and lower rf noise), sit it on an ultrahigh resistance mount, charge it to 4V and then measure plate to plate voltage with an instrumental amplifier.
Q. The plates will act like an antennae to low frequency radiowaves in the air, will the low frequency rf noise be higher than the 4V dc signal? Looking for any ball park number.
To ask a similar question, if i had a piece of straight wire 10cm long located away from a city / power grid. What peak to peak voltage noise would you expect to see? Microvolt? Millivolt? Volts? How about noise in an urban area?
Making a parallel plate capacitor 10x10cm with 10mm teflon in between as part of a science experiment.
200pF capacitor is charged to 4V, tiny amount of charge.
The plan is to take it to a desert (dry air and lower rf noise), sit it on an ultrahigh resistance mount, charge it to 4V and then measure plate to plate voltage with an instrumental amplifier.
Q. The plates will act like an antennae to low frequency radiowaves in the air, will the low frequency rf noise be higher than the 4V dc signal? Looking for any ball park number.
To ask a similar question, if i had a piece of straight wire 10cm long located away from a city / power grid. What peak to peak voltage noise would you expect to see? Microvolt? Millivolt? Volts? How about noise in an urban area?