I found tis circuit in na old documentation from 1958. The circuit uses germanium transistor availble that time and hard to obtain today. The circuit is indicated for phono applications using variable reluctance transducer.
We found this circuit in the June 1991 issue of Radio Electronics magazine. The integrated circuit is...
This circuit was found in a 1967 RCA documentation. The components are of the time. The circuit...
This timer for short intervals was found in a documentation from 1966. The transistor is made of...