"PPTC" redirects here. For the organisation, see Pacific Paramedical Training Centre.
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Resettable fuses - PolySwitch devices
A resettable fuse or polymeric positive temperature coefficient device (PPTC) is a passive electronic component used to protect against overcurrent faults in electronic circuits. The device is also known as a multifuse or polyfuse or polyswitch. They are similar in function to PTC thermistors in certain situations but operate on mechanical changes instead of charge carrier effects in semiconductors. These devices were first discovered and described by Gerald Pearson at Bell Labs in 1939 and described in US patent #2,258,958.[1]
A resettablefuse or polymeric positive temperature coefficient device (PPTC) is a passive electronic component used to protect against overcurrent faults...
voltages: Fuse – over-current protection, one time use Circuit breaker – resettablefuse in the form of a mechanical switch Resettablefuse or PolySwitch...
controller. They also exist as circuit breakers that are resettable using a switch. There may be a fuse for ignition off draw (IOD), which controls the drawing...
eFuse to detect if a non-Samsung boot path has ever been run. Resettable eFuses are used for protecting circuits. They act similarly to resettable fuses...
thermal fuse), or may be reset manually or automatically (a thermal switch). A thermal fuse is a cutoff which uses a one-time fusible link. Unlike a thermal...
and peak energy ratings from 0.05 to 2.5 joules.[citation needed] Resettablefuse, a current-sensitive device Trisil "Standards for Resistor Symbols"...
temperature Polymeric positive temperature coefficient (PPTC) device or resettablefuse PTC heating element, a type of self-regulating heater PTC thermistor...
equipment and to prevent fire. Unlike a fuse, which operates once and then must be replaced, a circuit breaker can be reset (either manually or automatically)...
induction motor using a pair of short-circuited brushes on a commutator. resettablefuse A circuit protective device that opens on excess current, and then...
recover from any failure. Examples of such devices range from self-resettingfuses (where the MTTR would be very short, probably seconds), to whole systems...
added between the microcontroller and UEXT connector. Additionally, a resettablefuse might be added between the host power and pin 1 to protect against...
a circuit, and used to protect against overcurrent conditions, as resettablefuses. Thermistors are generally produced using powdered metal oxides. With...
varistors, ESD (electrostatic discharge) suppressors, and polymer resettablefuses (also known as PPTC). It is well known as NTC Thermistor and varistor...
original on 28 December 2015. Retrieved 28 December 2015. "POLYFUSE® ResettableFuses SMD2920" (PDF). Datasheet. Littelfuse. Retrieved 28 December 2015....
circuitry to prevent damage from excessive power or operator error. Resettablefuses, specialized current-limiting light bulbs, and circuit breakers were...
conditions to provide a 'crowbar' function to operate a fuse or a latching alarm that can only be reset by removing the supply. Zener diode Shockley diode...
cells. PTCs, or positive temperature coefficient thermistors act as resettablefuses. PTCs begin to get warm at a trip current. The warmth increases their...
Karyogamy is the final step in the process of fusing together two haploid eukaryotic cells, and refers specifically to the fusion of the two nuclei. Before...
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