This complete video game circuit was found in the May 1978 issue of Radio Electronics magazine. The circuit includes the power supply and timing based on the MM5710N.
This circuit with a few watts of power was found in the April 1995 issue of Electronics Now...
This circuit with transistors in parallel was found in a Radio Electronics of August 1952....
We found this circuit in a 1977 technical documentation. The FET can be the BF245 and the bipolar...