This circuit is for analog TV video signals and was found in the March 1988 issue of Radio Electronics magazine. The circuit uses a Maxim integrated circuit that can still be found.
In the figure we have an interesting possibility that consists of the activation of a heating...
With this circuit it is possible to fire an SCR from the light that falls on a phototransistor. The circuit...
With the circuit shown in the figure it is possible to generate signals up to 65 MHz. The values of...