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Excellent Small Motor Skills
From Germany's Faulhaber, this 12VDC precision motor draws only 75mA no load, and has 1.9 in/oz of torque. Spins 8100 rpm. The motor measures 7/8" dia x 1-5/8" long with a 3/8" long x 1/16" dia shaft out the back and an 18-tooth, 5/16" dia sprocket on the front. There are bearings on both ends of the shaft. It's inside a 1-3/16" plastic frame the length of the motor with (4) 3/32" dia mounting holes. Works well from 3-12VDC, our motor-minded technician says, plus it's "OK for short term use up to 24VDC, and makes a pretty nice little generator, too." Has (2) 3-1/2" leads.
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37249 FAULHABER MOTOR |
MiniMultiMeter
Our pocket-sized multimeter measures a tiny 3-5/8" x 1-3/4" x 1" thick, with a 3-1/2 digit display on a 1-1/4" x 9/16" LCD screen. Will measure up to 500VAC, 100VDC, current from 200uA up to 10A, resistance up to 2000K ohms, and will also test diodes and transistors. Comes with (2) 24" test leads and a battery to power it. Teeny price to match its size. Great for science fair projects.
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93148 MULTIMETER |
Stranded Wire
This uncoated 18–gauge copper wire is available by the 50–foot hank. It’s 16–strand grounding wire, 1/3” lay.
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35156 COPPER WIRE, 50-FT |
Why Resist?
When you could just order this 480-pack of 1/4 watt, 5%-tolerance resistors. You'll get (30) pieces each of 10, 22, 47, 100, 220, 470, 1K, 2.2K, 4.7K, 10K, 22K, 47K, 100K, 220K, 470K, and 1M OHM.
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93191 480 RESISTORS |
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Johnson Motor
This reversible DC Johnson motor (Johnson #34513) operates from 12-24VDC with a max efficiency of 24VDC, 3057 rpm, and .14 amps. Measures 1-3/16" dia x 1-3/16" long with (2) hook-up tabs on the back and a 3/32" x 5/16" long slotted shaft. Has (2) mounting holes on the face. Works great as a small generator, output 2.5-3 V. Draws 30mA no load, and spins about 1200 rpm at 12VDC.
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37855 JOHNSON MOTOR |
Science Fare
A handful of hobby motors for a very reasonable price. This Mabuchi #RE-14 motor is only 1-1/8" x 13/16" dia, plus a 5/16" x 1/16" dia shaft. It operates from 1-1/2 to 3 VDC. Under load, at 1-1/2 VDC it draws 140 mA and spins at 500 rpm, and at 3 VDC, 800 mA, spins at 800 rpm. Comes with (2) 3" leads terminating in ring connectors. If you're looking for a larger quantity, try our classroom pack of (50). It’s a bargain!
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34566P4 MOTOR, 1.5 TO 3VDC | |
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34566P50 MOTOR, CLASSROOM PACK |
For High-Current Apps
Choose red or black, insulated 20AWG stranded hook-up/test-probe wire on a 20-foot spool. Good up to 1000V 90°C, and brought to you by the wonderful folks at Radio Shack®. UL.
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37863 PROBE WIRE, BLACK | |
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37864 PROBE WIRE, RED |
Hobby Motors
Pay yer money and take yer pick. Both are reversible, permanent-magnet, 6-12VDC motors. The Johnson version (Johnson #31942) is 1-1/4" long x 1-1/8" dia with a 1-1/16" long x 3/32" dia shaft, and a pair of 1/8" quick-disconnect tabs on the back. It operates with max efficiency at 12V, 5484 rpm and drawing .322A. Has .527 oz/in of torque. Draws approx 100mA no load. Has (2) 1/16" mounting holes on the face. The Molon is at max efficiency at 12VDC, 11,100 rpm at 1.40A. Measures 1-1/2" long x 1-1/16" dia with a 3/8" long x 3/8" dia striated shaft. Has (2) mounting holes on the face and power tabs on the back.
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37852 JOHNSON HOBBY MOTOR | |
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37857 MOLON HOBBY MOTOR |
Solid Rubber Wheels
Hard, black rubber, 3" dia x 1-5/8" wide, with an axle bearing and a 3/8" ID. These wheels have been used a bit, so the treadless surfaces might be a touch scuffed up. Plenty of revolutions left in them, though.
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37866 RUBBER WHEEL |
Little Giant
Call it the Stephen A. Douglas of gear motors-small, but more than able to go up against the big guys. From Pittman Mfg (part # GM8224), this permanent magnet, reversible, 328 RPM, 24VDC motor runs anywhere from 6-24VDC with exceptional torque throughout the range. No load current draw of 180mA. Stalls at 5.54A. Torque rating of 3.09 oz-in. Overall size is 3-3/8" long x 1-3/8" dia with a 3/16" dia x 11/16" flattened, hardened shaft. Leads are 5" long terminating in a 2-prong plug. Pittman says "self-aligning, sintered bronze bearings and diamond-turned commutators."
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37972 PITMAN GEAR MOTOR |
Black Box
Lidless, but ready to mount somewhere. It's black plastic and measures 7-1/2" x 4-1/2" x 2-1/4" deep, with a 3/8" wide lip along the short sides with (2) mounting holes in each. Inside it has (4) brass-lined screw holes, (1) in each corner, for attaching the lid it doesn't have, and (5) small circular stand-offs on the bottom. Whatever it was, it's now a mounted tray, component holder, or cover.
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37780 BLACK BOX |
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