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 oscillator was found in the November 1986 issue of Radio Electronics magazine. The frequency...
With the circuit shown, you can turn the lamp on or off in the living room, without the need to...
The sensors in this alarm are reed-switches. In the diagram we have only one, but several can be...