This game was found in an old Popular Electronics. The unijunction transistor can be 2N2646. The supply can be done with voltages from 6 to 12 V.
Found in American documentation from the 1960s, this circuit employs power transistors of the...
This circuit can be adapted to be used in a follow the line robot. It was found in the May 1962...
What differentiates the CIR8139 circuit is the use of two inverter ports to trigger the transistor that...