
Light emitting diodes. Solid state devices that provide the ubiquitous power and indicator lights on your electronic gadgetry. Unlike lamps, there are no filaments that glow. Rather, some two volts of DC power at a miniscule 10 to 20 milliamps of current get the chemistry excited, and they just plain emit. Emit is a good word, too, as they don't really cast light, but glow brightly. We have a nice assortment of 3 and 5 MM diameter sizes in red, green, orange, and yellow. The longer lead is always positive, the shorter always negative, and you always need a current limiting resistor (about 500 to 1,000 ohms for 5 to 9 volt DC sources) to keep the current in the 10-20 MA range. If that's Greek to you you're either going to blow a lot of LED's or learn to change incandescent indicator lamps ! !
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6796 LED ASSORTMENT |
We have hundreds of thousands of 1/4 watt resistors which we will send an assortment of (100) 1/4 watt resistors of at least (10) different ohm ratings. All have two axial leads, and 5% tolerance. Don't miss out! This is to cheep to pass up.
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21970 ASSORTED RESISTORS |
WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.
A trio of the best science education kits we have seen dealing with electricity, magnetism, motors and generators. The 44 page instruction booklets are educational and complete; state problem, approach and explain what is happening for a series of projects of graded difficulty. The Motor/Generator kit includes several introductory experiments on magnetism as well as six complete motor generator projects. The Electromagnet kit provides experiments including the building of an electromagnet, a doorbell chime, a telegraph, a relay and an electric catapult. The Levitation Set experiments with magnetic fields, gravity, and equilibrium; plus everything you need to build a magnetic levitation train! All are complete except for batteries. Strongly recommended for their quality, the accuracy of their science and the interest they will sustain. Ages 10-18.
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89339 ELECTROMAGNET KIT | |
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89714 MAGNET LEVITATION KIT | |
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89338 MOTOR/GENERATOR KIT |
One of those sharpie East Coast outfits pulled a fast one on this poor naive Midwestern dealer. The result is we have a pile of exotic coated copper magnet wire. The coatings and colors vary widely, as does the gauge of the wire. With a couple of exceptions there isn't enough of any one kind among the hundreds in the pile to list separately. So we are offering an assortment and you get whatever we grab. Either way you will get a terrific value, particularly if you have an exotic application and get just what you need. Even if you are just making a garden variety coil or electromagnet you will still find the prices are very good. So go ahead, profit from our misfortune. We are glad to be of service. Sigh.
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36227 MAGNET WIRE, 16 GA | |
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36228 MAGNET WIRE, 20 GA | |
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36229 MAGNET WIRE, 24 GA |
A big grab bag of LED display tiles. Assorted colors - red, green, amber - and displays. Small are 1" x 2" and smaller; 3-9 volts; and include seven-segment numeric, dot matrix, and alphanumeric. Sorry, we can't tell you what size or display you'll get, but Small has at least (4) different. Think of it as a surprise present from Uncle Barry. Hook 'em up and find out what he gave you!
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29233 LED DISPLAYS, SM |
Miniature 5–1/2" steel needle files. They come in the usual assortment of flat, wedge, triangular, and round shapes, (10) in all. They seem to be pretty uniformly fine with none that we would call coarse. Made in China, they come in a vinyl carrying case that snaps shut. Not as classy as some of the sets we have seen in the $12.00 range, but perfectly serviceable for most applications. And at a third the price.
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10900 NEEDLE FILES |
$3.95
EACH
Out of Stock. Check Back Soon! |
A set of (5) needle files, 5-1/2" long, which are coated with industrial diamonds. Perfect for sharpening tools, or doing filing on hard metals etc. when you are sculpting or welding. The shapes are the usual assortment of flat, round and in between shapes.
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89397 DIAMOND FILES |
This tiny 3 mm LED sits in a 5/32" x 1/4" x 7/32" black-plastic box with PC board mounts. At 2-3 volts it glows green and draws 40 mA.
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33823 2-3 VDC LED |
LEDs in assorted colors and sizes for displays, hobbies, robotics, electronics and more.
| Color | Size | ||||
|---|---|---|---|---|---|
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12534 4MM 3V LED RED | Red | 4mm Dia. | Details | |
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31632 5MM 3V LED YEL | Yellow | 5 mm | Details | |
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31620 5X3MM 3V LED ORNG | Orange | 5 mm x 3 mm Dia. | Details | |
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31623 9X5MM 6V LED GRN | Green | 9 mm x 5 mm Dia. | Details |
This deluxe ABS storage case is called a Store-It-ALL, and it does. But it could be called a Carry-It-ALL, for the sturdy handle and locking clasp, or it could be called a See-It-ALL, for its translucent lid. Or a Fits-It-ALL, for the removable dividers that let you configure it with any number of compartments from 5 to 26. But the 12" x 18" x 3" OA case should really be called ALL-I-Ever-Needed- To-Get-Organized!
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92454 STORE-IT-ALL BOX |
WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.
And teach a kid (8 and up) the basics of solar power. This excellent educational kit from Elenco comes with (9) 0.5VDC solar cells pre-wired in sets of (3) and mounted in a 5" x 4" x 7/16" black-plastic frame with screw terminals on the bottom. The kit includes a 1.5VDC motor with leads and a mount, a fan blade and (4) plastic discs from 5/8" dia to 2" dia for mounting on the motor shaft, a 1.5V incandescent bulb with leads, a sound module with leads, and graphic cards to mount on the discs. Comes with a 14-page instruction/experiment booklet, including info on increasing voltage and amperage, powering battery charges, radios, games, etc. Lots of science project potential. "Heuristic as all get-out," Jarvis said when he saw it.
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92923 SOLAR KIT |
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