This differential amplifier, found in a 1964 Electronic Design, has a gain of 30. The setting can be applied to modern equivalent transistors.
This circuit is from a 1967 documentation. It makes use of varicap and diode tunnel in addition to...
Indicated for applications with a PC, this circuit was found in an English documentation from...
Supplied in a 2005 Linear Technology Application Manual, this circuit monitors the charge and...