This circuit was obtained in a Hands-On Electronics from the 90's. The circuit turns on one LED at the end of the timer, erasing the other. The timing can be increased by increasing C1.
This circuit was found in the February 1994 issue of Electronics Now magazine. The circuit uses 6...
This circuit was found in a 1980s General Electric documentation. The circuit uses an operational of...
This circuit was found in documentation from the 1980s. The integrated circuit is from the time...