This dual balanced modulator configuration was obtained in a 1980s telecommunications documentation. The circuit makes use of transformers and the diodes are commonly used.
Based on a 555, this 80's American documentation circuit detects the voltage of a battery and can then...
This circuit, found in a 1958 magazine, is for reference only, since the components are not easy...
This circuit was found in the Optoelctronics Sourcebook from Texas Instruments. The circuit has a...