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LEDs By The Dozen

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 ! !

6796 LED ASSORTMENT
$2.25 PKG(12)

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Ultimate Control Panel

CD player digital displays in perfect condition. Each can show hours/minutes/ seconds, track, and index numbers, and can also indicate right/left speaker volumes, cassette functions, and (20) other words/states. Once you sort out the functions of the (34) 5/8" leads (the Japanese manufacturer might be of help here,) you could use these to replace broken displays or relabel them for use with whatever machine you're piecing together. They are particularly good components for tinkering because the leads are long and easily accessible. The panel is 2" x 4-1/2".

25956 FLUORESCENT CD DISPLAY
$1.00 EACH

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Resistors

Resistors

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.

21970 ASSORTED RESISTORS
$0.75 PKG(100)

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Electric Motor and Magnet Kits

Warning!  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.

89339 ELECTROMAGNET KIT
$24.95 EACH
89714 MAGNET LEVITATION KIT
$24.95 EACH
89338 MOTOR/GENERATOR KIT
$24.95 EACH

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A Snarl of Magnet Wire

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.

36227 MAGNET WIRE, 16 GA
$10.95 (100 FT)
36228 MAGNET WIRE, 20 GA
$9.95 (200 FT)
22146 MAGNET WIRE, 21 GA
$3.95 (100 FT)
36229 MAGNET WIRE, 24 GA
$5.95 (200 FT)

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LED Displays

LED Displays

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!

29233 LED DISPLAYS, SM
$4.50 PKG(6)

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Needle File Set

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 $18.00 range, but perfectly serviceable for most applications. And at a third the price.

10900 NEEDLE FILES
$3.95 EACH

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Antique Tuners

Antique Tuners

Or at least pretty old. The circa '70s car-radio tuner from Philco-Ford has a 6-position rotary switch with spring-loaded gears. Scrounge lots of capacitors, resistors, chokes, diodes, etc., from this tuner, or display one next to your favorite buggy whip.

33575 RADIO TUNER
$0.95 EACH
 

Diamond Files

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.

89397 DIAMOND FILES
$13.75 EACH

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Giant Sucker

Huge black soft rubbery suction cup, 4-3/4" dia with a handle molded onto the back. Made in Taiwan, the French and English labeling suggests it was destined for use as a dent puller or glass carrier. Which is fine if you have dents to pull and glass to carry. If not, use it as a non-invasive and or temporary hanging device in locales where such features are desirable, such as hotel rooms, boat hulls, windows, and the sides of fine antiques (Grandmothers excepted). It is really powerful!!

88956 GIANT SUCTION CUP
$2.00 EACH

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Tiny LED

Tiny LED

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.

33823 2-3 VDC LED
$2.00 PKG(20)

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