Behaviour and frequency dependence of AC-DC high voltage transfer standard under humidity step changes
- Resource Type
- Conference
- Authors
- Liu, L.X.; Chua, S.W.; Ang, C.K.
- Source
- Conference Digest Conference on Precision Electromagnetic Measurements Precision electromagnetic measurements Precision Electromagnetic Measurements, 2002. Conference Digest 2002 Conference on. :368-369 2002
- Subject
- Fields, Waves and Electromagnetics
Frequency dependence
Voltage
Thermal resistance
Humidity measurement
Resistors
Measurement standards
Frequency measurement
Analog-digital conversion
Differential equations
Impedance
- Language
Under humidity step changes, the measured AC-DC difference results from a thermal converter and a range resistor at 200 V in the frequency range from 40 Hz to 100 kHz have shown that a first order differential equation can be used to model the behaviour. The humidity coefficients for the model are found to be strongly frequency-dependent and the time constants are related to the changes in humidity.