This interesting circuit for analog TV selects the first line of a frame. The circuit was found in a 1967 Electronic Design. A modern equivalent transistor can be tried.
We found this circuit in an American documentation from the 90s. Through an LED it indicates the...
August 2016 - It can be purchased from Mouser Electronics the new digital isolators ADuM120N and...
In this circuit, from a documentation from the 70's, we have the way to control the active cycle of...