This precision bench test circuit can deliver currents in a range of 10 uA to 10 mA. The circuit is from an 80's documentation. The components are from the time.
We found this circuit at Modern Electronics in January 1991. The magazine no longer exists, but...
The integrated circuit used in this filter is not very common today, but the reader can use...
Found in Linear Technology documentation from the 90s, this circuit uses an operational amplifier...