Idan haka, idan karamin zane da shiga yawan kwayoyi ba sa iya tabbatar da muhimmancinta a kan zanarwa, ban da wani abu mai tsabta da ya bayyana cewa: mafarin zane da shiga yawan kwayoyi na iya haifar da sawaba?

Idan kadan wire ba tana iya sa shawar da zinari ta a yanzu, amma abin da ya faru a lokacin da ake yi da koyarwa, kamar mafi girman transformers, motors, ko electromagnets. Koyarwa ba su ne wire da aka baka, hakan, tsarin da kuma yanayi na ake yi suna taimakawa masu zinari mai sauƙi, musamman self-inductance da mutual inductance, wanda ke taimaka a kan abubuwan da ba a samu a cikin wire da ba a baka.

Dalilai na Sparking a Koyarwa

Inductive Effects

• Self-inductance: Idan karamin koyarwa, ana gina magnetic field a arewacin koyarwa. Idan karamin koyarwa yake canza (kamar a lokacin da ake kula da circuit ko ake rasa), magnetic field yake canza, wanda ke gina electromotive force (EMF) wanda ake kira self-inductance. Wannan canzawa na karamin koyarwa yana iya haɗa zuwa high voltage spikes, wanda ke taimaka a kan sparking.

• Mutual Inductance: A cikin koyarwa da turn kadan, canzan karamin koyarwa a turn bata yana iya haɗa zuwa canzan karamin koyarwa a turn masu ƙarshe, wanda ake kira mutual inductance. Canzan karamin koyarwa na karamin koyarwa yana iya haɗa zuwa high voltage spikes, wanda ke taimaka a kan sparking.

Capacitive Effects

Turn-to-turn Capacitance: Saboda capacitance daga turn zuwa turn a cikin koyarwa, canzan karamin koyarwa na karamin koyarwa yana iya haɗa zuwa high voltage spikes, wanda zai iya taimaka a kan sparking.

Switching Transients

• Sparking on Disconnection: Idan ake rasa power supply zuwa koyarwa, self-induced EMF yana taimaka energy magnetic da aka zama a koyarwa a bayyana karamin koyarwa, wanda yana iya haɗa zuwa high voltages across the switch, wanda zai iya taimaka a kan arcing ko sparking.

• Sparking on Connection: Idan ake kula da power supply zuwa koyarwa, establishment of current zai iya haɗa zuwa instantaneous high voltages, wanda zai iya taimaka a kan sparking.

Yadda Ake Differ Ordinary Wires da Koyarwa

• Geometric Structure: Ordinary wires suna da tsari mai yawan karamin koyarwa ko kuma koyarwa mai tsirriyar, amma koyarwa suna da koyarwa mai tsirriyar, wanda ke taimaka a kan self-inductance da mutual inductance masu koyarwa.

• Electromagnetic Effects: Canzan karamin koyarwa a cikin koyarwa yana haɗa zuwa canzan magnetic field mai yawa, amma canzan karamin koyarwa a ordinary wires yana haɗa zuwa canzan magnetic field mai yawa, wanda ke taimaka a kan electromagnetic effects mai yawa.

• Energy Storage: Koyarwa suna iya zama energy magnetic mai yawa, da kuma release of this energy during sudden changes in current yana iya haɗa zuwa high voltage spikes, wanda zai iya taimaka a kan sparking.

Preventing Sparking

Don samun sparking a cikin koyarwa, za a yi waɗannan abubuwa:

• Using Flyback Diodes: Idan ake rasa power supply zuwa koyarwa, flyback diode zai iya bayyana path for the current in the coil, absorbing the self-induced EMF and reducing the occurrence of sparking.

• Using Damping Resistors: A wasu lokutan, damping resistor zai iya a bayyana series with the coil don reduce the rate of current change, thus reducing the self-induced EMF.

• Using Soft Switching Techniques: By controlling the rate of current change, soft switching techniques can reduce voltage spikes, thereby minimizing sparking.

Summary

Koyarwa, saboda tsarin da tsari mai sauƙi da suka samu, suna da kansu a kan sparking idan karamin koyarwa yake canza kafin ya ɗauke da ordinary wires. Wannan shine saboda voltage spikes da aka samu saboda self-inductance da mutual inductance effects a cikin koyarwa. Don haka, through proper design and technical approaches, the occurrence of sparking can be effectively reduced or eliminated.