We found this circuit in a 1966 US documentation. It simulates a variable capacitor that can vary capacitance from 1,000 to 1. Transistors are general purpose types.
This circuit for measuring bridges was found in the October 1995 issue of Electronics Now...
May 2017 - Torex's XBP14E5UFN, an array of TVS circuit protection diodes with only 0.8 pF of...
Found in an Electronics World of 1969, this circuit causes a light bulb to flash along with the...