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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Goodhart9 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) 9 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)  TeratoMarty9 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
gyromild9 years ago
Check out circuits for LED night lights.

Examples here and here

Well, there you go, that second link is probably what I would find in the Night lite at the dollar store.
Goodhart9 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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