Found in Philips documentation from 1968 this circuit operates at frequencies up to 10 MHz with 76 dB gain. The double transistor can be replaced by a matched pair.
The circuit shown in the figure was found in a 1974 publication. The field effect transistor may...
I found this circuit in an English publication from 1989. This configuration can be mounted with...
We found this circuit in a small espionage manual from 1993. The components are current, and the...