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A crowbar circuit is an electrical circuit used for preventing an overvoltage or surge condition of a power supply unit from damaging the circuits attached to the power supply. It operates by putting a short circuit or low resistance path across the voltage output (V o ), like dropping a crowbar across the output terminals of the power supply.
Circuit Diagram of a simple Crowbar Circuit, with an 8V nominal output (7.6V with SD1). Date: ... Crow Bar Circuit, Schematic Sheet: 15:13, 11 June 2006: 276 × 153 ...
A crowbar with a curved chisel end to provide a fulcrum for leverage and a goose neck to pull nails. A crowbar, also called a wrecking bar, pry bar or prybar, pinch-bar, or occasionally a prise bar or prisebar, colloquially gooseneck, or pig bar, or in Australia a jemmy, [1] is a lever consisting of a metal bar with a single curved end and flattened points, used to force two objects apart or ...
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A circuit diagram (or: wiring diagram, electrical diagram, elementary diagram, electronic schematic) is a graphical representation of an electrical circuit. A pictorial circuit diagram uses simple images of components, while a schematic diagram shows the components and interconnections of the circuit using standardized symbolic representations.
Wedge — an unsharpened blade for digging, breaking and prying. A San Angelo bar has a wedge at one end. Chisel — a sharpened blade for cutting roots, digging and prying. A pinch point bar has a chisel at one end. Bars are typically 5 to 6 ft (1.5 to 1.8 m) long and weigh 15 to 23 lb (6.8 to 10.4 kg).
My Dad, a former Seabee, referred to the kind of bar with a chisel point on one end and the other end tapering to a rounded end, as a "crowbar"--that type of bar is sold in the local hardware stores as a "pinch point bar" (they have other bars that are similar to the photo in the "spud bar" article), and its original purpose was not digging--it ...
Power flows from left to right: The power supply (not shown) connects to the left-hand side of the diagram, and the protected device (also not shown) is connected on the right. Once the crowbar is tripped, the only way to reset it is to replace the fuse. 206.210.75.84 21:53, 6 March 2013 (UTC)