Electrical instrumentation
Off-the-shelf measurement equipment are not always available. Dedicated custom-made measurement devices are often built.
High gain transimpedance photodiode amplifier, current-to-voltage converter
High gain current-to-voltage converter
Measuring low current signals of few nanoamperes, produced by a photodiode, requires a high gain transimpedance amplifier. Metrology Research Institute has designed and built a custom current-to-voltage converter which can convert the low photocurrent signal of a photodiode to a voltage that can be read with a multimeter. The device is capable of measuring photocurrent signals of as low as few nanoamperes. As most of the research work carried out at Metrology Research Institute is related to measuring optical signals with a photodiode, the current-to-voltage converter is used in most of the measurement setups of the research group.
Contact person: Hans Baumgartner
The instrument is now commercially available:
Information about the latest projects can be found in the links below: