Foldback (sound Engineering)
Foldback may refer to: *Foldback (power supply design), a current-limiting device in power amplifiers *Foldback (sound engineering) Foldback may refer to: * Foldback (power supply design), a current-limiting device in power amplifiers * Foldback (sound engineering), a speaker used to direct sound to performers {{Disambig ...

Foldback (power Supply Design)
Current limiting is the practice of imposing a limit on the current that may be delivered to a load to protect the circuit generating or transmitting the current from harmful effects due to a short-circuit or overload. The term "current limiting" is also used to define a type of overcurrent protective device. According to the 2020 NEC/NFPA 70, a current limiting overcurrent protective device is defined as, "A device that, when interrupting currents in its current-limiting range, reduces the current flowing in the faulted circuit to a magnitude substantially less than that obtainable in the same circuit if the device were replaced with a solid conductor having compatible impedance." Inrush current limiting An inrush current limiter is a device or group of devices used to limit inrush current. Passive resistive components such as resistors or negative temperature coefficient (NTC) thermistors are simple options, with power dissipation and cool-down time being their main drawbacks, ...
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