This circuit makes use of a specific 80's component and was found in an American manual of the time. A matrix keyboard allows you to select one of several music programs.
This is a simulation of a Relaxation Oscillator using a programmable unijunction transistor (PUT). The...
June 2017 - The new non-polarized SMT aluminum electrolytic capacitors from Wurth Electronics can...
This traditional signal injector from a 1970s publication uses germanium transistors. We can mount it...