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Random Arduino/electronics tip: the Sharp S202S02F relay ($4 at Parallax) is an awesome little solid state relay that will do 8A at 240V.
by georgieporgie 15y ago
Random Arduino/electronics tip: the Sharp S202S02F relay ($4 at Parallax) is an awesome little solid state relay that will do 8A at 240V.
- cnvogel 15y agoThis device might deal quite badly with inductive loads such as the dishwasher motor or heating element (often wound in a spiral). The lifetime of the solid-state-relay will be reduced if you don't use the proper subber circuits (see for example the S202S02F datasheet found as the first google hit). A old-school mechanical relay might be a better fit. To drive mechanical relays, the ULN2003 is a very handy part. It's 7 transistors + freewheeling diodes + resistors in one 16pin DIP.
- georgieporgie 15y agoInteresting. I'm curious as to why it would be bad with inductive loads, since the first application listed includes motors and heaters. Thanks for pointing out the snubber circuit. I hadn't noticed and am about to build a project with the S202. :-)