Found in documentation from the 90s, this circuit was used in communications receivers of the time. MOSFET is a component of the time, uncommon today.
This circuit is from a book of transistors from 1954. The transistors are from the time and the...
This circuit uses a metal enclosed transistor as a temperature sensor. The circuit is from an old...
This oscillator for various frequencies was obtained from a 1980s telecom documentation. The...