This circuit, which can be used as a shield or in other applications, can be found elsewhere on this website. The supply must be made with 5 V.
This high-power flasher for incandescent signaling lamps was found in a 1980s General Electric...
This circuit produces paced steps of an engine whose speed can be adjusted in the trimpot. The key on...
S1 changes the selection of the input signals in the circuit shown here. Other type of circuits,...