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 circuit in a 1982 publication, but all the components used are still common in our...
This simple voltage doubler provides a continuous voltage at its output that is twice the peak...
This circuit uses three oscillators to produce a sound similar to a cricket chirping. Two...