Signals of up to a few tens of kilohertz can be generated by this circuit found in a European publication from the 1980s. Transistors admit equivalents and the unijunction can be 2N2646.
June 2017 - Vishay Siliconix's new Generation IV (Gen IV) Channel N MOSFETs can now be purchased...
Found in English documentation, this timer produces an audio signal at the end of the timing. The...
This circuit was found in the June 1985 issue of Radio Electronics magazine. The idea is to use a...