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Tubes!
Tubing for all your tubing needs. We have rubber, acrylic, vinyl, and PVC, in a variety of somber colors. All are nice and flexible like a tube ought. And they're all at our typically low, low prices. See the table for the specs.
| Material | Color | ||||
|---|---|---|---|---|---|
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25401 TUBING, 1/4"X3/8" | PVC | Green | Details | |
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27669 TUBING, 1/8"X3/16" | PVC | White | Details |
Peltier Heat Pump
High tech comes to Am Sci & Surp!! It is here in the form of a Peltier junction, a thermo-electric device that translates electric power into heat, and perversely, into cool. Apply current @ 3-12 VDC to the gizmo and it extracts thermal energy from one face, thereby cooling it. The heat is dumped onto the other face, thereby heating it. Please note: you must use a heat sink on the hot side or the junction will fry itself, since it can quickly create a 65° C temperature differential in a no load situation. Stack two, or build a cascade to increase the thermal differential created. Or run it backwards. Apply heat or cold to the relevant face and produce a current. Amazing for science projects and experiments. Practical for coffee warmers, beer coolers and mini-refrigerator or warming oven applications. Comes with instructions. Large is 1-9/16" sq. x 3/16" thick.
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89143 LARGER PELTIER JUNCTION |
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Losin' Juice?
Or usin' it up? This nice solar cell is made to prevent battery drain in cars, boats, snowmobiles (or anything else with a 12-volt) during storage or because you're running stuff like cell phones, laptops, or various pods off of said battery. Rated for 12VDC 120mA, it measures 14-3/4" x 6-1/4" x 3/4" OA with an 11-3/4" x 4" cell. The 91" cord leads to a fused and polarity-protected cigarette-lighter plug. Has 14.7 VDC output with no load, an LED indicator, and weatherproof housing. Works in all weather, even low-light and cloudy conditions.
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93116 SOLAR CHARGER |
Big and Rechargeable
Here’s a brand new selection of sealed lead-acid rechargeable batteries, for when you’re pushing something a little bigger than a penlight. All batteries are all direct from the manufacturer with current date codes. All of them have (2) 3/16” wide (F1) quick-disconnect terminals on top.
| Size (L x H x D) | |||
|---|---|---|---|
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93912 12 VOLTS/5AH | 3-9/16" x 4" x 2-3/4" | |
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93913 12 VOLTS/8AH | 5-15/16” x 3-11/16” x 2-9/16” | |
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93914 6 VOLTS/4.5AH | 2-3/4” x 3-15/16” x 1-13/16” |
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