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.
With this circuit found in a 1965 Electronic Design, it is possible to read a peak voltage of up to...
This 80's Exar circuit has a carrier detector for frequencies up to 500 kHz. The circuit uses a...
Found in American documentation from the 1980s, this circuit can generate signals from 50 kHz to...