31-12-2011, 07:04 PM
Oh, dear, I fear I'm in the other camp. I've long regarded 555s and 556s as only fit for amateur twiddlers in 'designs' using a few pots to get it right, or where any sort of stability or repeatability was about tenth on the list of desirable features. Many moons ago I tried, but it was hopeless. If anyone is feeling heroic try buying a few from different Manufacturers and plugging them into a test circuit. They won't even all trigger in the same way let alone produce the same timing. As a one-off, with a bit of fiddling, they're OK, but that's about all.
Alan
Alan
