Found in a Hands On Electronics from the 90s, this circuit can be easily assembled today, as the FET can be equivalent and the operational is general-purpose.
This is yet another balanced modulator circuit for SSB transmission. This two-diode circuit was...
This tester for common SCRs was found in an Italian magazine Elettronica Prática 9 of 1977. The...
This RF monitor or field strength meter can use instruments from 100 uA to 1 mA full scale. The...