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    has to do with my transistors post below

    Ok everyone i tried my best to figure this out, but I came up with nothing. It's sort of hard to search the internet for parts with certain specs, especially transistors. So I need some help from you guys. Basically this is a schematic for a (crappy)laser pointer detonator I'm making, just for...
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    transistors

    whooof talk about quick reply, thanks guys
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    transistors

    I have a few questions about transistors, so here we go: How can you tell how much current must flow between base-emitter to allow current to flow collector-emitter?? How can you tell which connector on a transistor is the emitter? When a transistor gets a small current running through the...
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    LIGHTENING STRIKES

    Ok, I'm not sure if anyone said this yet, but here is how part of lightning works: Whichever one is negative (the clouds or the ground, not quite sure) induces the opposite charge on the other thing. If that makes sense. Basically if the clouds are heavily negatively charged, when they pass...
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    Infrared phototransistor

    Wow man, thanks for that. I didn't realize it only conducted 10mA under bright light. But I was browsing some websites and they had circuits similar to the one you described : a phototransistor drivin a transistor that is rated high enough to get a nice current flowing. Thanks for the help, its...
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    Infrared phototransistor

    Ok, i built this infrared emittor using three 1.6v 50mA 100mW infrared leds, with a 100ohm resistor, and a 9v battery all in series. I did all the math and i bought the parts, soldered them and glued down the connections so that they dont move aroudn a whole lot, and it works great. Each led...
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    conventional schematic help

    Ok, I've learnt how to read electronic schematics in electron-flow style, and now that I've finally learnt it pretty decently I figure out that there's a whole different style? Conventional flow eh? Hmph. It makes absolutely no sense to me. How can people stick with that ancient method of doing...
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    Radio Controlled Switch for Ignition

    Ok heres my idea, and it's probably been thought up 10000000s of times but I'm just wondering if this would work and if anyone has any ideas on how to make this: A radio frequency transmitter (probably either 27 or 49 mhz
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    SUPER CONFUSED =\

    http://www.teachers.ash.org.au/jfuller/test2/diodesB.htm on that page, if you scroll down there is a picture of a grey box with little red lines on it. below that there is a tiny little schematic. I'm having a LOT of trouble getting all this through my brain..I'm a complete newbie to...
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