This circuit can keep a set of lamps on for up to 1 minute, time given by C2 and R2 that can be changed. The load depends on the relay. The circuit is old, from 1988 documentation, but totally viable today.
In the presence of the supply voltage of a 3 to 12 V circuit, this circuit causes the LED to...
With several integrated circuit options, this amplifier can provide different powers depending on the...
This is a circuit with a new (at the time) component released by Raytheon in 1965. The circuit uses a...