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Recent content by Dubious Drewski

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    Questions about AC and loud buzzing noises

    I understand that it's unfair to blame members. This forum just isn't as active, I know. I was just surprised at the volume of answers on the other forum, despite electronics not being their specialty. While over here, the thread gets many views but not a single response, even though I'm sure...
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    Questions about AC and loud buzzing noises

    proper ac sine wave buzzing Well you guys didn't seem to know the answer. That's too bad. The folks at a photography forum did. Just to let everyone know what the solution was: This powerbox is supplying the AC power not as a pure sine wave, but as more of a chopped-off sine, almost a square...
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    Questions about AC and loud buzzing noises

    ac buzzing noises Hey guys, I'm only a photographer, so I think I need your expertise here. I just bought a MotoMaster Powerbox 800 and I'm intending to get my portable studio lights to work off of it. My lights require 120V AC at 60Hz, and this box is supplying 120V AC, but I have no idea at...
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    Beginner wants to build some circuit-controlled LEDs. Help?

    Re: Beginner wants to build some circuit-controlled LEDs. He Thankyou very much. I'm going to look into those ideas. (I especially like the microcontroller idea) But in the meantime, I think I may have got my answer . I'm sorry for not wording my question very clearly to begin with :| .
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    specific LED behaviour: how can I achieve this?

    Fantastic! Thank you, guys. I'm going to go figure out what those symbols on those diagrams refer to, then go buy those parts and wire them up and see what happens. Electronics is a surprisingly engaging hobby.
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    Beginner wants to build some circuit-controlled LEDs. Help?

    Re: Beginner wants to build some circuit-controlled LEDs. He Thank you for the replies. Though I'm finding it a bit difficult to find articles on some of these concepts that doesn't assume prior knowledge. For example, looking for info on voltage followers, the clearest explanation I could...
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    specific LED behaviour: how can I achieve this?

    If I wanted an LED to behave exactly like this: What's the simplest circuit I could build that would do this? Note: the light is never completely off; it glows at medium brightness with a timed pulse of brightness. (This thread is an extention of this one here. I think it fits here.)
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    Laugh out loud newbie question: how much does voltage matter

    So I just recently learned what voltage and amps were, but I'm wondering about something. If amps are the actual measurement of electrical flow, then why are volts important? Voltage is a measure of the electrical "pressure", right? So as long as there are enough volts to get the electricity...
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    Beginner wants to build some circuit-controlled LEDs. Help?

    Re: Beginner wants to build some circuit-controlled LEDs. He Thank you much. I've been reading a number of beginner electronics sites and I'm starting to see how this all works. I notice that oscillators and multivibrators somewhat do what I am looking for. The only problem is they seem to be...
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    Beginner wants to build some circuit-controlled LEDs. Help?

    Hey all. I'm a hobbyist who usually works with woods, plastics and cardboard, but I've never done anything with electronics yet. I'm building a replica spaceship from the game Eve Online. Specifically, the ship is the Drake. As you can see, it has glowing spires and some lighting from the...

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