AC Quantum Voltmeter
The AC Quantum Voltmeter is a programmable Josephson voltage standard system applicable for the highest level of precision voltage measurements from DC up to kHz frequencies.
It was developed by the Physikalisch-Technische Bundesanstalt Braunschweig (PTB) in cooperation with the companies esz AG and Supracon AG.

It facilitates a variety of voltage calibrations and measuring functions:

  • Primary DC & AC Josephson voltage standard up to kHz frequencies
  • Calibration of calibrators
  • Calibration of secondary voltage standards
  • Calibration of voltmeter linearity
  • Calibration of thermal converters (optional)
  • Voltage source with ultimate precision and lowest noise level


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Contact us

Supracon AG
An der Lehmgrube 11
07751 Jena

Tel.: +49-3641-2328100
Fax.: +49-3641-2328109