This dual balanced modulator configuration was obtained in a 1980s telecommunications documentation. The circuit makes use of transformers and the diodes are commonly used.
The circuit presented was suggested by a Texas Instruments optoelectronics manual. The voltage...
This circuit uses a dual-gate MOSFET, a rare component today. We found it in American...
This squelch circuit used in transmitters was found in a magazine for radio amateurs 73 in the...