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.
This thermometer, which uses common diodes as sensors, was found in a 1975 magazine -...
This circuit is from American documentation from the 70s. This configuration appears in this...
We found this Japanese commercial radio diagram of three transistors in a documentation of the...