The purpose of this 1967 Philips circuit is to produce a rectangular signal from a sharp pulse. The circuit makes use of an unusual component today as a base.
For reference only, this is the second IF amplifier stage of a common transistor radio from the...
This circuit is from an Electronics World of 1964. The circuit can be made with modern...
This logarithmic gain operating configuration was found in the June 1994 Electronics Now magazine. The...