This small analog TV transmitter was found in an Electronics Now from the 90s. The range is around 20 meters, and the coils are according to the channel on which you want to receive the signal.
Some of the components used in this circuit are not very common today. The circuit is from a 1996...
This circuit multiplies the frequency of a signal by 100. The circuit was found in the October 1994...
We found this circuit in a 1978 documentation. The SCR conducts when the regulator's output...