Sinzi niba warabonye ikibazo, MOSFET ikora nkibikoresho byo guhinduranya amashanyarazi mugihe gikora rimwe na rimwe ubushyuhe bukabije, ushaka gukemura ikibazo cyubushyuhe bwaBYINSHI, ubanza dukeneye kumenya ibitera, dukeneye rero kugerageza, kugirango tumenye aho ikibazo kiri. Binyuze mu kuvumburaGushyushya cyane ikibazo, jya guhitamo ibizamini byingenzi byingenzi, ntabwo bihuye nisesengura, arirwo rufunguzo rwo gukemura ikibazo.
Mu kizamini cyo gutanga amashanyarazi, usibye gupima umuzenguruko wigenzura ryibindi bikoresho bya voltage ya pin nkibiremereye, bigakurikirwa na oscilloscope kugirango bipime ingufu za voltage zijyanye. Iyo tujya kumenya niba guhinduranya amashanyarazi bidakora neza, aho gupima amashanyarazi bishobora kwerekana leta ikora ntabwo ari ibisanzwe, umusaruro wa mugenzuzi wa PWM ntabwo ari ibisanzwe, impanuka ya pulse cycle na amplitude ntabwo ari ibisanzwe, guhinduranya MOSFET ni kudakora neza, harimo na transformateur ya kabiri na primaire kandi ibisubizo byibitekerezo ntabwo byumvikana.
Niba ingingo yikizamini ari amahitamo yumvikana ni ngombwa cyane, guhitamo neza birashobora kuba ibipimo byizewe kandi byizewe, ariko kandi biradufasha guhita dukemura ibibazo kugirango tumenye icyabiteye.
Mubisanzwe bitera MOSFET gushyushya ni:
1: G-pole yimodoka ya voltage ntabwo ihagije.
2: Id iyobora binyuze mumazi nisoko ni ndende cyane.
3: Gutwara inshuro nyinshi.
Icyibandwaho rero nikizamini muri MOSFET, igerageze neza akazi kayo, niyo ntandaro yikibazo.
Twabibutsa ko mugihe dukeneye gukoresha ikizamini cya oscilloscope, dukwiye kwitondera byumwihariko kwiyongera gahoro gahoro kwinjiza voltage, niba dusanze voltage ya pex cyangwa amashanyarazi arenze igishushanyo mbonera cyacu, iki gihe tugomba kwitondera gushyushya MOSFET, niba hari anomaly, ugomba guhita uzimya amashanyarazi, gukemura ibibazo aho ikibazo kiri, kugirango wirinde MOSFET kwangirika.
Igihe cyo kohereza: Nyakanga-21-2024
