This circuit makes use of a special LM195 power transistor not very easy to obtain. The circuit is from the 1994 Linear Applications Handbook by National Semiconductor.
This circuit is an excellent shield for microcontrollers and was found in the October 1987 Radio...
We found this circuit in a 1981 publication, when it was still possible to find 22.5 V batteries (used...
This grid-dip meter was found in a 1956 documentation from Sylvania. It can be implemented with...