All items tagged with filter and light (3)

1-01-2023 | This article describes a simple tunable filter circuit that needs no special chips, just two op-amps that can be running from a 5-V single s...

1-12-1998 | This circuit shows that only a handful of parts is needed to make a light-controlled switch with a digital power buffer output capable o...

1-07-1993 | High-order filters are normally designed by using two or more 2nd order sections in series. This means that a 4th-order filter needs at l...