Electrometric direct current I/V converter with wide bandwidth
- 1 June 2012
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 83 (6), 064703
- https://doi.org/10.1063/1.4725526
Abstract
A principle of operation and electrical characteristics of a high frequency current-to-voltage (I/V) converter are presented. The I/V converter measures the electric current with selectable gains of 105, 104, and 103 V/A in the frequency range from DC to 500 kHz, 1.2 MHz, and 2.4 MHz, respectively. These properties make this I/V converter suitable for wide range of applications such as tuning forks, torsion oscillators, ultrasound transducers measurements, detection of the piezoelectric transducers used in STM techniques, etc., in low temperature physics. The influence of the input impedance of a I/V converter on the precision of alternating current measurements is also discussed.Keywords
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