This circuit switches on an external load after a certain interval given by the capacitor. The circuit is from a documentation from the 80s. The load depends on the relay used.
We found this circuit in Linear Technology Applications of 1997. The circuit uses common...
The circuit shown causes two LEDs to alternately flash at a frequency given by the capacitor. The...
Using two 567 PLLs, this circuit recognizes two audio tones in sequence providing a signal for a...