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.
This circuit, suggested by National Semiconductor, provides an output voltage proportional to the...
This powerful alarm circuit was found in the July 1975 issue of Radio Electronics magazine. The...
This two-transistor circuit was found in the January 1994 issue of Electronics Now magazine....