Peb piv txwv ntawm kev hloov hom fais fab mov tsis ua haujlwm hauv zaus converters
Piv txwv:
Lub 2844 nti yog powered ntawm nyias thiab tsis muaj mem tes ntawm tus pin 6. Qhov voltage ntawm tus pins 1, 2, thiab 3 yog ntsuas kom zoo li qub. Qhov voltage ntawm tus pin 4 yog 1.8V, thiab oscilloscope ntsuas tias tsis muaj sawtooth yoj mem tes ntawm tus pin 4; Tus kws kho qub qub tau hloov plaub daim ntawv ua ke. Ntsuas cov av tiv thaiv ntawm tus pin 4, uas yog qis dua li lwm cov circuits, nrog rau kev tiv thaiv ntawm kaum tawm txhiab ohms. Lub tshuab no yog nyob ib ncig ntawm 3000 ohms. Tshem tawm cov nti thiab nws cov khoom siv peripheral, tshem tawm plaub tus pins, thiab ntsuas cov nqi hauv av kom yog 9 kiloohms, tsis tas li. Pom tseeb, muaj qhov to ntawm 4-pin los ntawm lub qhov lossis tooj liab ntawv ci thiab 5-pin grounding point. Lub sijhawm no, ntawm plaub tus pins, sim siv 30V DC voltage, thiab cov nqi tam sim no yog kaum ntawm milliamperes thiab maj mam txo. Thaum nws tsawg npaum li ob peb milliamperes, txiav tawm lub hwj chim thiab ntsuas qhov kev tiv thaiv ntawm plaub tus pins rau hauv av dua, uas dhau 60 kiloohms. Rov qab muab cov nti thiab 4-pin cov khoom, kho lub zog ntawm cov teeb meem.
Ob qho piv txwv:
Nyuaj pib vibration. Tom qab lub nti thiab lub ntsiab Circuit Court yog powered nyob rau hauv ua ke, cov zis ntawm lub hwj chim mov yog ntsuas los ntawm 11V ntawm 15V thiab 19V ntawm 24V, ob qho tib si yog tsawg. Qhov ntsuas hluav taws xob ruaj khov yog +15V, qhia tias nws tsis tau mus txog qhov pib qhov hluav taws xob ruaj khov. Lub oscilloscope ntsuas lub luag haujlwm lub voj voog ntawm 6-pin pulse, uas yog me me. Txheeb xyuas qhov laj thawj, qhov tso zis hluav taws xob pulse lub voj voog me me, uas muaj feem xyuam rau cov xeev ntawm tus pin 1 thiab tus pin 3. 1. Txuas pins 2 rau cov lus tawm tswv yim optocoupler pins 3 thiab 4, thiab xyuas tias tsis muaj teeb meem nrog lub voltage stabilizing circuit. . Muaj 18V voltage regulator diode txuas ntawm tus pins 3 thiab 7. Tom qab tshem tawm, qhov txhaum tau daws.
Cov zis hluav taws xob tsawg tsawg, thiab yog tias nws tsis yog vim qhov tsis txaus ntawm tus kheej lub zog, nws yog vim kev tswj hluav taws xob lossis overcurrent. Qhov piv txwv no yog rau yav tom ntej.
Peb piv txwv:
Hloov fais fab mov, nti fais fab rau thiab lub ntsiab hluav taws xob hauv hluav taws xob, ua haujlwm ib txwm. Tom qab tshem tawm cov chip fais fab mov, nws ua haujlwm ib txwm. Xyuas kom tsis muaj kev thauj khoom luv luv thiab tsis muaj qhov kub thiab txias hauv lub raj hloov. Yog vim li cas rau tus kheej lub hwj chim tsis txaus yuav raug txiav tawm. Txawm hais tias lub zog ntawm kev muaj peev xwm excitation tsis txaus, yuav tsis muaj kev hloov pauv tom qab txo qhov pib tsis kam. Nws tseem yog ib qho teeb meem ntawm lub hwj chim los yog excitation nrog pins 5 thiab 7. Obviously, nws muaj internal circuits ntawm pins 5 thiab 7 ntawm lub nti.
