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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 ! !
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6796 LED ASSORTMENT |
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.
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21970 ASSORTED RESISTORS |
Rectifier
Great for fixing your power boo boos up to 4 amps @ 100 Volts. (Forgive the pun, it is late.) The full bridge rectifier is a 4-pin single in-line package (SIP) type with an oval hole for heat sink mounting. 7/8" x 3/4" x 1/4" it should be great in a power supply!
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28700 RECTIFIER |
Buck The Force!
With this 1.2K OHM 10% tolerance power resistor. Rated 3 to 5 watts, it has a ceramic block body 3/8" sq x 1-1/2" long with wire leads on ends, one of which is 1/2" long and the other 1-1/2". Any questions?
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32454 POWER RESISTOR, 1.2K OHM |
Red LEDs
This is a nice LED at a great price. The diffused-red LED with a T1 case measures 0.119" dia, or just under 1/8". The leads are about 1" long, with the positive a bit longer than the negative. It runs on 2.5 VDC at 20 MA. In a series with a 220 ohm resistor, you can run it at 5 VDC. In a series with a 1000 ohm resistor, at 12 VDC.
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28998 SMALL RED LED |
4.1 MFD Capacitor
A 4.1 MFD 300 VAC capacitor. Only 1-5/8" long x 3/4" dia., the MGT-67A P.C. mount capacitor has a resistor mounted on its side.
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28999 4.1 MFD CAPACITOR |
RED LED
An LED that really shines. The red LED is configured with a resistor and works at 9-12 volts. It's held by a 1-5/8" bracket behind a 1-1/4" x 7/16" x 5/16" deep SPST slide switch, and has (2) 4" leads. All ready to roll.
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32884 9-12 VOLT LED |
It's A Snap!
with our best selling electronics kit. Build 100 or more electronic projects from a Reflection Detector to a Simple Salt Water Alarm with Snap Circuits Jr. The Elenco kit, a Dr. Toy Winner, has a grid base and a selection of conductors, resistors, switches, integrated circuits and more, for a total of (30) color-coded snap-in parts. For ages 8 to 108, the easy-to-use components and well-designed instruction manual make this a perfect way to spend some quality time with a bright young child! AWARDS: The National Parenting Center-Seal of Approval, Dr. Toy 100 Best Children's Products, Dr Toy Best Educational Products.
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92133 SNAP CIRCUIT JR |
LCDs
These liquid crystal displays are raring to go. As soon as we can get Mary Ann to stop playing with them we'll pick out (5) assorted displays for you. (She keeps zapping them with static electricity to see what pops up. Mary Ann is easily amused.) Sizes range from 1-3/16" x 2" to a few as large as 5" x 10". They're unused. Some have pin leads, some have traces right on the wafer. Either way, they're a terrific bargain.
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34244 LIQ CRYS DISPLAY |
A Light In The Darkness
This little 120 VAC, 40 mA neon indicator lamp is 3/8" x 7/32" dia, with 1" wire leads. It has clear glass and a nice orange glow, but with its 150 ohm resistor it's a little dim to be used in bright light. We suggest you use it in darker surroundings, because you don't want to remove the resistor. Like we did....
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31636 120 V NEON LAMP |
G.E. Lamp
Each 115 VAC neon indicator lamp is 7/8" long x 1/4" dia and comes with (2) 1-1/4" leads -- and it's the sensitive type, one might say. At 115 VAC it only works if you use a resistor (not included). It will pop if you don't use one. Just so you know.
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19858 NEON LAMP |
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