Yog vim li cas rau cov zis voltage tsawg tshwm sim los ntawm switching fais fab mov
1. luv Circuit Court txhaum ntawm switching fais fab mov load
(Tshwj xeeb tshaj yog lub DC / DC converter yog luv luv lossis muaj kev ua haujlwm tsis zoo, thiab lwm yam), thaum lub sijhawm no, ua ntej txiav tag nrho cov khoom siv hluav taws xob hloov hluav taws xob, thiab xyuas seb qhov hloov hluav taws xob hloov hluav taws xob puas ua haujlwm lossis cov khoom siv hluav taws xob. yog faulty.
Yog hais tias lub load Circuit Court yog disconnected thiab qhov voltage tso zis yog ib txwm, lub load yog hnyav heev; lossis yog tias nws tseem txawv txav, qhov hloov hluav taws xob hloov hluav taws xob tsis raug.
2. Qhov tsis ua hauj lwm ntawm lub lim capacitor lossis rectifier diode ntawm qhov tso zis voltage kawg yog txiav txim los ntawm txoj kev hloov.
3. Qhov kev ua tau zoo ntawm lub raj hloov pauv yog degraded, uas ua rau lub raj hloov pauv tsis ua haujlwm ib txwm, uas ua rau muaj kev cuam tshuam sab hauv ntawm cov khoom siv hluav taws xob hloov pauv thiab txo lub peev xwm thauj khoom.
4. Qhov tsis zoo hloov pauv hloov pauv yuav tsis tsuas yog ua rau cov zis hluav taws xob poob, tab sis kuj ua rau tsis txaus siab ntawm lub raj hloov thiab ua rau lub raj hloov pauv.
5. Lub 300V lim capacitor tsis zoo, ua rau lub peev xwm tsis zoo ntawm cov khoom siv hluav taws xob hloov pauv, thiab cov zis hluav taws xob yuav poob sai li sai tau thaum lub load txuas nrog.
6. Kev tuav pov hwm kub hnyiab tawm lossis tawg
Feem ntau xyuas tus choj rectifier, diodes, hloov cov raj thiab cov lim dej loj ntawm 300 volts. Tej zaum nws yuav ua rau lub fuse hlawv thiab ua dub, los yog nws yuav tshwm sim los ntawm ib qho teeb meem nrog rau cov hluav taws xob tiv thaiv Circuit Court.
Lus Cim: Lub fuse raug hlawv vim qhov tawg ntawm lub raj hloov, uas feem ntau hlawv cov hluav taws xob hloov hluav taws xob tswj cov nti thiab qhov ntsuas qhov ntsuas tam sim no, thiab cov thermistor yooj yim dua los hlawv tawm ua ke nrog lub fuse.
7. Cov zis voltage siab dhau lawm
Lub siab tso zis hluav taws xob feem ntau yog los ntawm qhov ntsuas hluav taws xob-stabilizing thiab voltage-stabilizing tswj circuits.
Nyob rau hauv lub kaw tswj voj uas tsim los ntawm DC tso zis, sampling resistor, yuam kev sampling amplifier xws li TL431, optocoupler, hwj chim tswj nti thiab lwm yam circuits, tej teeb meem nyob rau hauv ib qho ntawm cov qhov chaw yuav ua rau cov zis voltage ntawm lub switching fais fab mov nce.
8. Lub fuse yog qhov qub, tsis muaj qhov tso zis hluav taws xob
Lub fuse yog qhov qub thiab tsis muaj qhov hluav taws xob tso tawm qhia tias lub zog hloov pauv tsis ua haujlwm lossis tau nkag mus rau hauv lub xeev tiv thaiv. Thawj kauj ruam yog txhawm rau txheeb xyuas tus nqi ntawm qhov pib-up voltage ntawm tus pin pib ntawm lub zog tswj nti. Yog tias tsis muaj qhov pib-up voltage lossis qhov pib-up voltage tsawg dhau, xyuas seb cov khoom sab nraud ntawm tus pin pib thiab qhov pib-up resistor puas.
Yog tias lub zog hloov hluav taws xob tswj cov nti yog qhov qub, qhov txhaum tuaj yeem pom sai sai los ntawm kev saib xyuas saum toj no. Yog tias muaj qhov pib-up voltage, ntsuas seb puas muaj qhov dhia ntawm qib siab thiab qis ntawm qhov tso zis kawg ntawm cov nti tswj thaum lub sijhawm pib. Yog tias tsis muaj dhia, nws txhais tau hais tias cov nti tswj tau puas lawm, cov khoom siv hluav taws xob peripheral oscillation raug puas tsuaj los yog kev tiv thaiv Circuit Court yog faulty. Chip, xyuas cov khoom siv peripheral, kos ib qho los ntawm ib qho; yog tias nws dhia, feem ntau, lub raj hloov pauv tsis zoo lossis puas.
Cov saum toj no yog lub ntsiab yog vim li cas rau qhov tsawg tso zis voltage ntawm lub switching fais fab mov. Kuv vam tias nws yuav pab tau rau sawv daws.
