/diy/ - Do It Yourself

>>799806
It's intuitive, I suppose. You spend a lot of time learning about various components and then when you have a tangible design idea, you already know more or less what you'll need to implement it.

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Just a few stupid questions of my own, /diy/:

1) What's the worst that could *really* happen if I control a 10 A universal motor with a TRIAC but exclude a snubber? I've heard about "snubberless" TRIACs. Are these basically the ubquitious standard nowadays even if the word "snubberless" isn't explicitly written on the datasheet, or do I need to actively shop for one?

2) If I accidentally put a 700 mA load (a small incandescent lightbulb) on an Arduino Uno's digital pins (max. 40 mA) without a current-limiting resistor in series with it, and the bulb refused to light up, is there any chance I've done permanent damage to the board?

3) Should I bother adding a bleeder resistor in parallel with the DC pins of a bridge rectifier if the whole thing is going to be sealed inside a package anyway where no one will ever be able to touch it?