This TTL counter was found in the March 1991 issue of Radio Electronics magazine. The circuit is part of a larger project and must be powered by a 5V voltage.
This circuit is from a 2004 documentation, and can also be used to signal garages with the use of a...
This circuit is from the 1974 Motorola Unijunction Trigger Circuits for Gated Thyristor. The triac...
This Nixie pipe circuit was found in 1965 documentation. Note the high supply voltage. Appropriate...