What's a voltage trigger and where can I buy it?

Science fair once again. I'm really starting to hate science..... Anyway, now I just need a voltage trigger. 1381-G voltagre trigger IC. Any major place where I can find this? Due nov 17.......

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CameronSS9 years ago
If all you are after is a solar engine, I've had success with the flashing LED solar engine-It's called the "trimet" in the PDF to which you linked. It basically consists of a transistor, a capacitor, a resistor or two, and a flashing LED (as in one that blinks when a steady current is applied). If you just use a single capacitor instead of three, you get basically the same thing, albeit a little less efficient, but with easier-to-find parts. Since the capacitors are connected in parallel in that circuit, they can all be replaced by one with a capacitance equal to the sum of the three capacitances.

I built a Symet from the Junkbots book before I had even discovered Make or Instructables...it happened to be in the robotics section of the Topeka public library.
kelseymh9 years ago
Hi, Keith-Kid. According to your profile, you're in PR. I'm not sure what you've got down in San Juan -- you said Radio Shack doesn't carry the 1381-G's. Fry's would carry such things; in the San Francisco area Jameco is one of the best low-volume places (i.e., you can buy just one or two). Sorry I can't be more help.
westfw9 years ago
Are you building a "solar engine" ? There are some other versions that use more common components; the voltage trigger is particularly convenient and efficient, but it's not the only game in town. Page full of solar engine schematics
If you gave us more info, we might have better advice.
Keith-Kid (author)  gimmelotsarobots9 years ago
no, PARTS SMAPLE! look here. Scroll through the comments.
NachoMahma9 years ago
. Panasonic makes a 1381-G. If you can't find it at any of the local hobby shops, try an industrial electronics/electrical supplier (may have to pay a premium to buy just one). Check the Yellow pages.
Keith-Kid (author)  NachoMahma9 years ago
That's the model they use.
Kiteman9 years ago
You making a BEAM project?

Try Solarbotics.
Keith-Kid (author)  Kiteman9 years ago
I wanna avoid online. I'm looking for an actual store. Radioshack doesn't have em....
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