Simulation and development of high precision Voltage dividers and buffer for AC voltage metrology up to 1 MHz

A voltage divider and buffer system has been proposed in order to improve the AC Voltage traceability at Justervesenet (JV) for frequencies up to 1 MHz. Buffer prototypes have been constructed for use at room temperature and liquid nitrogen. They have proven ability to operate up to 1 MHz with a 50 Ω load at 300 K and beyond 10 MHz for loads above 1 kΩ. Simulations suggest that AC-DC difference span less than 30 ppm for frequencies up to 1 MHz for the divider and 200 ppm for the buffer. Although there are some discrepancies between buffer simulation and prototype measurements, the model still possess great explanatory power.