This interface shield circuit is from the 1983 Intersil Databook. The components used are uncommon today. ADCs are low-cost digital converters. The power source voltage must be 5 V.
This squelch is activated by its own noise, acting automatically. It is used in communications...
September 2017 - Can be purchased from Mouser Electronics Triacs with 20 A and 30 A currents...
In addition to the didactic purpose, the figure circuit can also be automated. In this case, the...