Shunt (electrical)
Device that routes electric current around a point in a circuit
Shunt (electrical)
A shunt is a device designed to provide a low-impedance path for an electrical current in a circuit. It is typically used to divert current away from a system or component in order to prevent overcurrent. Electrical shunts are used in a wide variety of applications including power distribution systems, electrical measurement systems, automotive and marine applications. Shunts take many physical forms depending on their application. In current measurement, a shunt is a resistor of very low but precisely known resistance placed in parallel with a meter, allowing large currents to be measured indirectly via the voltage drop across it. In circuit protection, shunt devices such as crowbar circuits guard against overvoltage by short-circuiting the supply. Capacitors are employed as shunts to redirect high-frequency electrical noise to ground. In photovoltaics, the term describes an unwanted short circuit within a solar cell, while in lightning protection, gas-filled tubes act as shunts to safely...
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