This circuit that can be activated by light or heat was found in an old American documentation, but the components it uses are perfectly current. The power transistor shall be fitted with a heat sink.
This digital electronic game circuit was found in a 1982 publication. It randomly draws the...
Found in Texas Instruments documentation from the 90's, this circuit can be used as a shield due...
This configuration found in GE documentation from the 90s, can also be seen elsewhere in this...