We found this balanced modulator circuit for DSB and possibly SSB transmissions in US 1980s telecommunications documentation. The diodes can be replaced with equivalents.
This circuit was used to regulate the speed of small DC motors of cassette recorders. However, if the...
This circuit was found in Harris' 90s documentation. The used component is uncommon today. |...
This simple power reducer, based on capacitive reactance, was found in a 1995 documentation. The...