This timer, like the previous circuits, uses a currently uncommon integrated circuit. The time is given by capacitor C1 and R2 which has the range of values indicated in the diagram.
We found this circuit in a 73, magazine for radio amateurs of the 90s. The circuit is passive and...
This configuration for proper connection of parallel amplifiers was found in National...
We found this circuit in a 1965 General Electric documentation. The circuit generates synchronized...