This circuit is suitable for applications in medical, research and industrial equipment. The circuit was found in a Radio Electronics magazine from May 1983.
This pattern of TTL frequencies was found in an 80s manual. The circuit must be powered by 5 V and...
We have already explored this configuration in several articles on this site. This was found in an...
Two tone siren (CB9085E) This circuit was found in a 1980’s Radio Electronics. The signal must be...