If you need a precise time, you could use a microcontroller. Of course, then all your friends will say “Could have done that with a 555!” But the 555 isn’t magic — it uses a capacitor and a comparator ...
Rolynd Aquino, Product Applications Engineer, Francis Ian Calubag, Systems Applications Engineer, and Janchris Espinoza, Product Applications Engineer, all with Analog Devices. This article contains ...