This circuit, obtained from a 1965 magazine, can still be assembled using some modern equivalent components. The transistors may be BC558 and the transformer is obtained from a disused transistor radio.
This circuit uses BCD switches to program the frequency to be divided. The circuit is from a Radio...
In the figure is a diagram of a basic alarm with CMOS circuits and transistors obtained from a...
April 2017 - The Shields of Seed Grove Modules for Intel Joule can now be obtained from Mouser...