The circuit shown has a voltage gain of 500 times and can use equivalent FETs like the BF245. The circuit is suggested by National Semiconductor in its 1994 Linear Applications Handbook.
This circuit was found in a book on transistors from 1954. It works by the beat that is detected by...
This stage for general purpose transistors was taken from an old technical manual. The circuit can...
This circuit provides reverse power polarity protection using a power MOSFET and a diode. The...