Found in na 1969 Electronics World, this circuit makes use of transistors of the time. Equivalent transistors can be used. The diodes can be 1N4004.
We found this complementary simetry configuration in a1980s documentation. Transistors, which are...
This circuit using current components was found in an old documentation. It is a sequential circuit...
This 80's circuit turns off a TV or other appliance after a set time. The base is a 555 IC and the...