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Ibhodi lesifunda elivamile GND kanye negobolondo GND engaqondile resistor eyodwa kanye capacitor eyodwa, ngani?

i-asd (1)

 

Igobolondo lenziwe ngensimbi, elinembobo yesikulufu phakathi, exhunywe emhlabeni. Lapha, nge-resistor engu-1M kanye ne-33 1nF capacitor ngokuhambisana, exhunywe nomhlabathi webhodi lesifunda, iyini inzuzo yalokhu?

Uma igobolondo lingazinzile noma linogesi omile, uma lixhunywe ngokuqondile ebhodini lesifunda, lizophula i-chip yebhodi lesifunda, lingeze ama-capacitor, futhi ungakwazi ukuhlukanisa imvamisa ephansi kanye ne-voltage ephezulu, ugesi we-static nokunye ukuvikela ibhodi lesifunda. Ukuphazanyiswa kwe-circuit high-frequency nokunye okunjalo kuzoxhunywa ngokuqondile kugobolondo nge-capacitor, edlala umsebenzi wokuhlukanisa ukuxhumana okuqondile.

Ngakho-ke kungani ungeza i-resistor engu-1M? Lokhu kungenxa yokuthi, uma kungekho ukumelana okunjalo, lapho kukhona ugesi omile ebhodini lesifunda, i-capacitor ye-0.1uF exhunywe emhlabeni inqanyuliwe ekuxhumaneni nomhlaba wegobolondo, okungukuthi, imisiwe. Lezi zindleko ziqoqa ngezinga elithile, kuzoba nezinkinga, kumele zixhunywe emhlabeni, ngakho-ke ukumelana lapha kusetshenziselwa ukukhishwa.

i-asd (2)

Ukumelana kwe-1M kukhulu kakhulu, uma kukhona ugesi omile ngaphandle, i-voltage ephezulu nokunye okunjalo, kunganciphisa ngempumelelo yamanje, futhi ngeke kubangele umonakalo ku-chip kusekethe.


Isikhathi sokuthumela: Aug-08-2023