Found in a 1969 documentation, this neon lamp circuit may have the number of steps increased. The power supply is made with high voltage.
This circuit is for analog TV video signals and was found in the March 1988 issue of Radio...
The varactor or varicap diode tunes the signal for listening to SSB signals on a common receiver. The...
Available at Mouser Electronics this component of Diodes Incorporated consists of a voltage...