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.
This circuit is from the Motorola Linear Databook of 1990. The circuit controls a Triac from a...
This circuit was obtained from Maxim documentation. The circuit has 4.5 and 5.5V thresholds for...
This circuit for high power xenon lamps was found in the November 1974 issue of Radio Electronics...