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 is suggested by Texas Instruments' Linear Circuits Applications. It consists of an...
Radio Electronics magazine in November 1962 published in an article several circuits with tunnel...
This circuit generates a signal corresponding to the harmonic of the crystal used. The frequency is...