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A fireplace poker is usually metal and has a point at one end for pushing burning materials (or a hook for pulling/raking, or a combination) and a handle at the opposite end, sometimes with an insulated grip. Iron is the most popular metal from which the pokers are wrought. Brass is a more expensive alternative for a home poker set. [1]
The role of the substrate in power electronics is to provide the interconnections to form an electric circuit (like a printed circuit board), and to cool the components.. Compared to materials and techniques used in lower power microelectronics, these substrates must carry higher currents and provide a higher voltage isolation (up to several thousand vo
Today, electrical tape is simply "another form of insulation". [4] The original electrical insulating tape was made of cloth tape impregnated with Chatterton's compound, an adhesive material manufactured using gutta-percha. This type of tape was often used to insulate soldered splices on knob and tube wiring. It was commonly referred to as ...
Made with copper-coated double-wall stainless steel insulation, this insulated food jar also has two lids. The attractive cyan 16-ounce size food-safe jar features a wide mouth and a spoon for ...
Unlike the 1911, the grip safety on HS2000 series also locks the slide. The means without a proper grip on the gun to depress the grip safety, the slide cannot be cycled to load or clear the gun. In addition to a trigger safety, a drop safety prevents the striker from releasing if the gun is dropped or exposed to a significant impact. As of ...
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Basic insulation is any material added to protect a user from accidental contact with energized parts. Supplemental insulation is rated to withstand 1500 volts AC. Double insulation is a design concept where failure of one insulation system will not expose the user to a shock hazard due to the presence of a second independent layer of insulation.
A type of a crocodile clip cutting through the wire insulation was patented by Harry Frankel from New York in 1903, [3] and another design was developed by Westinghouse Electric Corporation engineer [4] George Brown Dusinberre, who patented it in 1909, [5] and later was hired by Ralph S. Mueller & Co. [6] to refine the design, with a later ...