This dual balanced modulator configuration was obtained in a 1980s telecommunications documentation. The circuit makes use of transformers and the diodes are commonly used.
circuit is used to increase the sensivity of a relay. A 50 to 100 mA relay can be triggered with...
This source was obtained from a former publication for valves but also serves for powering common...
August 2017 - Heat sinks for use with Arcol / Aluminum resistors can be obtained from Mouser...