Found in a 90s American documentation, this circuit mimics the Enterprise warning signal from the movie Star Trek. The signal must be applied to an amplifier.
May 2017 - Torex's XBP14E5UFN, an array of TVS circuit protection diodes with only 0.8 pF of...
Found in a 1965 CQ magazine, this circuit uses period components. The unijunction transistor can...
This circuit is from a 1974 publication, and the integrated circuit can be replaced by the 7905....