Title :
Automatic bridge for inductive voltage dividers
Author :
Chang, Peter ; Ping Liang, Chih
Author_Institution :
Electr. Meas. Lab., ITRI, Hsinchu, Taiwan
fDate :
4/1/1995 12:00:00 AM
Abstract :
We describe an automatic ac voltage ratio standard based on an injection-type bridge and two test inductive voltage dividers (IVD) for applications at low audio frequencies. The ratio standard is generated by self-calibrating two test IVD´s by an automated “boot-strap” procedure. The bridge is the heart of our reference standard for ac voltage ratios as well as a calibration system for IVD´s. The ratio accuracy of our bridge calibration is better than 0.05 ppm at 500 Hz. In addition, we describe two IVD designs used in this work
Keywords :
bootstrap circuits; bridge circuits; calibration; computerised instrumentation; voltage dividers; voltage measurement; 500 Hz; ac voltage ratio standard; automatic bridge; boot-strap; bridge calibration; inductive voltage dividers; injection-type bridge; low audio frequencies; ratio standard; reference standard; self-calibration; Automatic testing; Bridge circuits; Calibration; Circuit testing; Computer interfaces; Driver circuits; Frequency conversion; Heart; Switches; Voltage;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
