This circuit was found in Linear Technology Applications of 1997, using components of the time. The circuit transmits video signals bidirectionally over twisted pair.
In the figure we have the circuit of a simple humidity sensor with the 4011. The circuit was found...
We found this receiver for the 144 MHz band in a European publication from the 1970s. The circuit...
We found this circuit in an ancient American documentation. It can be adapted to operate in other...