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.
Found in a 90s Popular Electronics, this circuit uses two PLL tone recognizers to trigger by touch an...
This Hughes circuit is from 1968. Equivalent modern components can be used. The input impedance is...
This circuit is from 1995 documentation. In the original, the source is symmetrical at 12 V, but...