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.
Found in a 1980s telecommunications documentation, this balanced modulator circuit uses...
This circuit, extensively explored in this section and in circuits on this site, is recommended to...
This circuit was found in a 2005 Linear Technology application manual. The circuit is based on the...