Comments by "Paul Frederick" (@1pcfred) on "LED Circuit Design - How to design LED circuits" video.

  1.  @rongarza9488  you ever try to push a chain?
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  2. When that wire burned it was creating light then.
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  3. If that wire was like the filament in a bulb it wouldn't have burned so easily. Even not in a vacuum. Modern bulbs use tungsten as the wire.
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  4. The current is the same everywhere in a series circuit. You divide the voltage though. Remember when he said resistors aren't like speed bumps? Once you've reduced the current it stays at that reduced rate. More current isn't going to come out of thin air. Though it'd be nice if it did. Voltage drops do differ though.
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  5. That's because 1 Ohm resistors aren't 1 Ohm and your measuring equipment has an error too.
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  6. Type joule thief into the search box at the top of this page and find the video by Big Clive. What that circuit can do is nothing short of astonishing. It's a simple boost converter circuit you can make out of electronics trash. There's only 4 parts. But winding the transformer is a bit tricky. You have to figure out which wire is what. It only works the "right" way around. So if it doesn't work you have to swap two of them.
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  7. In a transistor a control signal allows current to flow. That control signal has to be at a potential difference from one end of the flow though. So if you ground that one end then any positive is good for control. If you don't ground it then things get complicated. So we just ground it to keep life simple.
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  8. Some say there's only one angry pixie in the whole Universe. It just teleports all over the place. It is called the one electron Universe. If that's true the electric companies are really ripping us off. Selling us the same electron over and over.
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