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What are some electrical schematic symbols?

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Quick Answer

Standard schematic electrical symbols include ground, battery and chassis. The ground symbol is comprised of a straight vertical line and several short horizontal lines, indicating electric current is connected to earth and not a shock hazard. The symbol for battery is composed of several short vertical and horizontal lines, and is often found on equipment packages that include a battery. The chassis symbol resembles a three-pronged rake, and means an electrical circuit is connected to a chassis.

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Equipotentiality is an important symbol used to identify surfaces that have the same level of voltage, and is represented by a vertical line attached to a triangle. It is safe to touch two surfaces that display the equipotentiality symbol, but caution is advised when surfaces have different voltage levels.

Attenuator and resistor are two electrical symbols that feature sharp zig-zag lines. The attenuator symbol features a vertical zig-zag line between two short vertical lines, which represent input and output. Resistor is a simple horizontal zig-zag line and indicates limited electrical current.

Capacitor symbols are commonly associated with resistor symbols. This symbol is identified by two identical shapes with opposite end vertical lines. Antenna is another easily identifiable electrical symbol, and it is composed of a vertical line with a "v" piercing its top. A power fuse symbol appears as a curved line between two small circles.

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