ma CD makina Integrated dera kuyezetsa, chachikulu ayenera kuyeza mfundo zazikulu mayeso.
Njira yanthawi zonse ndikugwiritsa ntchito kuyesa voteji iliyonse ya phazi ndi pini kuti ikanize pansi, mphamvu yolowera ndi kutulutsa, kugwiritsa ntchito mphamvu ndi kuyika / kutulutsa ma waveform, ndipo zotsatira zoyesa zimasiyana ndi magawo wamba ophatikizika, amatha kuweruza dera lophatikizidwa kuti liyesedwe. zabwinobwino.
mu
makina onyamula, ma microprocessors omwe amagwiritsidwa ntchito kwambiri, ma microprocessors ophatikizika omwe amagwiritsidwa ntchito kwambiri, ma filimu ophatikizika ophatikizika ndikusintha magetsi opangira amplifier IC.
Tiyeni tikambirane mwatsatanetsatane za izi.
makina onyamula katundu kuyezetsa chigawo chophatikizika mu kiyi ya magawo oyeserera adera ophatikizika.
1.
Chinsinsi cha microprocessor Integrated circuit test point
chinsinsi cha microprocessor Integrated circuit test point makamaka ndi mbali ya VDD magetsi, RESET, RESET, crystal IN vibration sign input, Xor crystal vibration signal linanena bungwe mapeto a athandizira, linanena bungwe, ndi madera ena.
Kuyesa kwapaintaneti kuyeza nsonga yofunika kwambiri ya kukana ndi mtengo wamagetsi ndipo zachilendo zimatha kuweruza kuti gawo lophatikizika ndi lachilendo;
2.
Kiyi yosinthira magetsi IC test point
kiyi yosinthira magetsi ku IC test point imakhala makamaka Vc kuzindikira kutha, voliyumu, kuyika kwaposachedwa, kutulutsa kwamphamvu, ndi zina zambiri.
Mayeso a pa intaneti adagwiritsidwa ntchito kuyeza voteji yamagetsi ophatikizika ndi kukana kwa pini iliyonse, ndiyeno poyerekeza ndi data yanthawi zonse, monga kusiyana kwakukulu, iyeneranso kukhala yokhudzana ndi gawo, gawo limatsimikiziridwa pansi pazikhalidwe zanthawi zonse, zitha kuweruza chigawo chophatikizika chawonongeka.
Mu lophimba Integrated dera lophimba chubu ndi pachimake chigawo chimodzi, ndi anamanga-wakuda filimu Integrated dera lalikulu mphamvu lophimba chubu pamene si bwino kukayikira lophimba chubu akhoza kuyezedwa ndi kusintha chubu c, b, e kwambiri pakati kutsogolo ndi n'zosiyana kukana. ku chiweruzo.
3.
Malo oyesera a IC amplifier amplifier
fungulo la malo oyesera a amplifier IC makamaka ndi kulowa ndi kutulutsa.
Mfundo ya static voltage value ndiyokwera kwambiri.
kuyesa, ma multimeter mpaka dc voteji, kuyeza kuchuluka kwa voteji pakati pa mapeto ndi mapeto amagetsi olakwika.
Ndi ma tweezers achitsulo pamanja, nawonso, ndikugogoda kumapeto kwa amplifier yogwira ntchito (
Lowani nawo chizindikiro cholumikizira)
, ndipo yang'anani momwe mawotchi amakhalira, yachibadwa, multimeter pointer idzakhala ndi oscillation yaikulu, monga pointer sichisuntha, ndiye amplifier yogwira ntchito yawonongeka.
4.
Mayeso oyeserera a njinga yamagetsi yamagetsi ophatikizika.
m'makina onyamula, omwe amagwiritsidwa ntchito nthawi zambiri 555 nthawi yoyambira yophatikizira TL494 dera ndi dera.
Tiyeni tiwone mwatsatanetsatane mfundo zazikulu za njira zoyesera (
1)
Kutsimikiza kwa gawo lophatikizika T494
kulongedza makina ophatikizira kuyezetsa dera kuti adziwe dera lophatikizika la T494 motere.
1)
Konzani chida.
Kuyesa kwa mabwalo ophatikizika kuti musankhe ntchito zambiri, monga ma digito amitundu yosiyanasiyana, mitundu yokhala ndi mtundu wothandiza wa MY68 ndi mtundu wa digito wamtundu wa MS820.
amatha kudziwa pafupipafupi 150 KHZ ndi 200 KHZ.
Muyeneranso oscilloscope, chosinthika kukana waya mapiringidzo, etc.
2)
Kuyeza pafupipafupi kwa oscillation.
First screw multimeter to 200 KHZ, preliminary survey T494 oscillation rate (
Padera lina lophatikizika monga pansipa 200hz, mutha kusintha zida)
, kuti adziwe molondola.
T494 oscillation mu 5, ndi 6 mapazi, kotero multimeter zolembera ndi mapazi awiri awa, iwo akhoza kudziwa funde la sawtooth.
Charger ndi kulamulira dera la oscillation pafupipafupi 20 ~ 80 kh, zotsatira kutsimikiza ndi mtengo ndithu, Integrated dera oscillation ndi yachibadwa, kukana capacitance mtengo olondola.
ngati palibe zizindikiro za oscillation, adzayang'ana malo kukhudzana ndi zolembera ndi, mawaya, etc.
Ngati retest akadali ocheperapo muyeso manambala wa dera Integrated ali ndi vuto.
ngati pafupipafupi sikuloledwa, kuwuza Rr kapena Cr, kusintha koyenera kapena kusintha koyenera.
3)
Kuyeza chiŵerengero cha ntchito.
Okonzeka oscilloscope, adzakhala T494 linanena bungwe pini 9, 10, kulumikiza athandizira mawonekedwe a oscillograph, ndi patsogolo kwa 9, mapazi 10 ndi katundu oveteredwa.
Apa ndikofunika kuzindikira kuti palibe katundu wowerengedwa, chiŵerengero cha ntchito sichiri cholondola, chimachokera ku mtengo wa mapangidwe oyambirira.
Yang'anani oscilloscope 9, 10 mapazi a linanena bungwe waveform, nthawi yomweyo kusintha chiŵerengero cha ntchito: kulamulira chinthu, kusintha liwiro loyang'anira chogwirira, ndi 0 spin;
Chaja, sinthani mtengo wokana kuchokera ku 0 mpaka 6 mapazi (
The capacitance C, nthawi yomweyo kusintha)
.
Panthawi imeneyi kuchokera oscilloscope ayenera kuona ntchito chiŵerengero kusintha kuchokera ziro kuti zana peresenti osiyanasiyana.
kulongedza makina ophatikizika ophatikizana ndiabwinobwino kapena ayi akugwirizana ndi makina omwe amatha kugwira ntchito bwino, chifukwa chake ndikofunikira, ndikukhulupirira kuti nkhaniyi yolongedza makina ophatikizika mayeso adera ndiyothandiza kwa inu.
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