There are the following basic requirements for voltage sensors.
(1) The voltage sensor connected to the circuit under test should basically not affect the amplitude and waveform of the measured voltage.
(2) The voltage waveform obtained by the voltage sensor should be the same as the voltage waveform to be measured. The voltage dividing ratio should be independent of the measured voltage frequency and amplitude.
(3) The voltage partial pressure ratio is independent of or substantially independent of atmospheric conditions (air pressure, temperature, humidity).
(4) The power consumed by the voltage sensor should be small. Under certain cooling conditions, the temperature rise caused by the electrical energy dissipated by the voltage divider should not cause a change in the partial pressure ratio.
(5) The voltage sensor should not be disturbed by external electromagnetic fields, and on the other hand, it should not generate strong electromagnetic interference to the external environment.
