This dual balanced modulator configuration was obtained in a 1980s telecommunications documentation. The circuit makes use of transformers and the diodes are commonly used.
This TTL circuit was found in a 1978 technical documentation. The power must be supplied with 5 V....
This circuit, suitable for tube equipment, was found in an old documentation. It uses a high...
The BA1404 integrated circuit (not very easy to obtain) consists of a complete stereo FM...