This Linear Technology circuit can measure currents from 100 pA to 100 uA. The circuit is from the 80's, using a component of the era. Transistors are general purpose types.
We found this logical configuration in a documentation from the 1970s. It consists of a...
This circuit uses a dedicated Philips integrated, which consists of a stepper motor control from 3...
This circuit trips with negative pulses and the value of C depends on its intensity. C1 determines the...