Title :
An AC voltage standard based on a PWM DAC
Author :
Wright, Paul S. ; Pickering, John R.
Author_Institution :
Nat. Phys. Lab., Teddington, UK
fDate :
4/1/1999 12:00:00 AM
Abstract :
The principle of digitally synthesized AC voltage standards is well established. This paper describes a new AC voltage standard which uses a traceable DC voltage standard as an input and produces an AC output at an equivalent RMS voltage to 1 μV/V uncertainty. The system works using digital synthesis with a so called Pulse-Width Modulator (PWM) Digital to Analog converter (DAC)
Keywords :
digital-analogue conversion; direct digital synthesis; pulse width modulation; quantisation (signal); transfer standards; voltage measurement; waveform generators; AC voltage standard; AC-DC transfer; PWM DAC; current steering DAC; digital synthesis; equivalent RMS voltage; quantization noise; spectral purity; traceable DC voltage standard; uncertainties; voltage switching DAC; waveform synthesis; Counting circuits; Delay; Digital modulation; Power harmonic filters; Pulse width modulation; Pulse width modulation converters; Quantization; Switches; Timing; Voltage;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
