LEDs off house current?

I have recently conceived a desire to pimp out small household appliances, like say a hand mixer. I want to add LED running lights around the joint where the top part of the case and the bottom part fit together. Of course, I also want to still be able to use the mixer for its intended purpose, so I can't just slap a wall wart on the cord. Does anyone have any hints on a safe way to divert/convert about 12v of DC power from the 120v AC power cord? Ideally, I'd like a compact solution, one that will fit inside the case of the appliance.

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Goodhart10 years ago
Now that I think about it, long time ago, I put together a small AC outlet tester with a green, red, pair of LEDs. Now, if I can find it....
TeratoMarty (author) 10 years ago
Er, thanks, but all your advice presumes that I'm much more technically adept than I am. I've made simple electrical devices and done repairs before, but everything I know, I know from cracking open the case and rooting around inside. I *ahem* can't read the circuit diagrams. Obviously, I should learn, but until then, does anyone know of a relevant step-by-step photo Instructable on this site?
TeratoMarty (author)  TeratoMarty10 years ago
Let me clarify- I have plenty of experience, just no formal training. Circuit diagrams are very formalized indeed. My safety skills are up to snuff- I know about grounding and insulation- and I can fix anything electrical as long as it doesn't have a microchip anywhere in its guts. I thought this website would be at home with the self-taught ethos. So, if I promise not to electrocute myself, will someone point me to a compact solution for stepping house current down enough so that I can run LEDs without burning them out instantly?
Many "wall warts" are adequate. It is hard to "illustrate " a method in electronics without using the language of schematics to portray that information. Simple solution without the schematic would sound like that:: AC input routed through a step down coil, routed through a bridge rectifier, filtered or "chopped" by a capacitor or so, and anther rectifier or so, or barring that last rectifier, using a voltage regulator and capacitor combo. Frankly, I found it easier to learn to read schematics (on my own) then to follow vague instructions.
your advice presumes that I'm much more technically adept than I am.

In that case it would be irresponsible of us to give you advice, which might get you killed, and reckless of you to try to follow it :-/


Pat. Pending
Yep, that is why I though this link may be of assistance to him :-)
I hope this helps: Simple Schematics Tutorial
gyromild10 years ago
Check out circuits for LED night lights.

Examples here and here

Goodhart gyromild10 years ago
Well, there you go, that second link is probably what I would find in the Night lite at the dollar store.
Goodhart10 years ago
Just got back from the Dollar store....I wish I had picked up one of their "night lights" which claim to have LEDs in them. If so, I could have broken one open to see. They are rather small. so they circuit would be tiny I am sure.
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