Verwys na FIGUUR 4.1 hieronder en beantwoord die vrae wat volg - NSC Electrical Technology Electronics - Question 4 - 2021 - Paper 1
Question 4
Verwys na FIGUUR 4.1 hieronder en beantwoord die vrae wat volg.
4.1.1 Identifiseer die multivibrator in FIGUUR 4.1.
4.1.2 Noem die polarisiteit van die plus wat die... show full transcript
Worked Solution & Example Answer:Verwys na FIGUUR 4.1 hieronder en beantwoord die vrae wat volg - NSC Electrical Technology Electronics - Question 4 - 2021 - Paper 1
Step 1
Identifiseer die multivibrator in FIGUUR 4.1
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Answer
Die multivibrator in FIGUUR 4.1 is 'n Bistable Multivibrator.
Step 2
Noem die polarisiteit van die plus wat die omkerings verskaf wanneer skakelaar S1 gedruk word.
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Answer
Die polarisiteit is 'n Positiewe puls.
Step 3
Noem TIME TWICE funksies van die 741-op- versterker in die kringt.
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Die 741 Op-versterker werk soos 'n vergelyker wat die twee spannings op die inset vergelyk.
Step 4
Wys LED1 aan meervoudige merke wanneer skakelaar S1 gedruk word.
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LED1 sal positief aan die kringt wees eens S1 gedruk is, wat 'n +9V spanning verskaf.
Step 5
Noem die polarisiteit van die spanning wat op pin 3 natuurlik is wanneer skakelaar S1 gedruk word.
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Die polarisiteit op pin 3 sal negatief wees, wat -9V aandui.
Step 6
Identifiseer die komponente wat die lid van kapasitor C1 aanbeweeg.
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Die komponente wat C1 beïnvloed, sluit die 741-op-versterker in.
Step 7
Verduidelik wanneer die kringtset van toestand sal verander.
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Die kringtset sal verander wanneer die inset groter is as die drempelpunt, in hierdie geval, V-.
Step 8
Op die ANTWORDBLAAD van VRAAG 4.2, teken die spanning by punt B as die inset in die kringt aangewend word.
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Die spanning by punt B moet 'n sneller-pulse vorm.
Step 9
Identifiseer die kringt in FIGUUR 4.3 wat kapasitief is.
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Die kapasitiewe элемента in FIGUUR 4.3 is die kapasitor C2.
Step 10
Verduidelik waarom die uitset aanhoudend hoë en lae signalen se vorm beklemtoon word.
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Die uitset se aanhoudende hoë en lae signalen vorm word beklemtoon deur die 741-op-versterker wat die spoed van die omskakeling beheer.
Step 11
Noem 'n volledig benaamde 741-cp-versterker-ekwivalent van.
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Die volledig benaamde ekwivalent is 'n 741-sommerversterker.
Step 12
Noem die funksie van 'n sommeer versterker.
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Die funksie van 'n sommeer versterker is om die ingangspele te som.
Step 13
Bereken die uitsetspanning by B.
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Die uitsetspanning by B kan bereken word deur die toepaslike waardes in te voeg in die formule: Vout=(Vin1+Vin2)imesRf
Step 14
Bereken die uitsetspanning by C.
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Die uitsetspanning by C kan ook bereken word deur die waardes van die komponente aan te pas.
Step 15
Bereken die waarde van die gereg vir A.
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Die waarde van die gereg vir A is belangrik vir die versterking van die uitset.
Step 16
Bereken die totale wins by D.
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Die totale wins by D kan bereken word deur die som van die individuele winste aan te dui.
Step 17
Identifiseer die kringt in FIGUUR 4.6(A) en (B).
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FIGUUR 4.6(A) is 'n Passiewe RC differensieleerder; FIGUUR 4.6(B) is 'n Passiewe RC integreerder.
Step 18
Verduidelik die invloed van lang tydkonstante op die werking van die kringt in FIGUUR 4.6(B).
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Lang tydkonstantes skep 'n gladder uitset wat die stabiliteit van die kringt verbeter.
Step 19
Verduidelik die funksie van die kringt in FIGUUR 4.6(B).
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Die kringt in FIGUUR 4.6(B) funksioneer as 'n integreerder.
Step 20
Identifiseer die komponent in FIGUUR 4.7 wat die spanning involveer.
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Die komponent wat die spanning in FIGUUR 4.7 involveer, is die op-versterker.
Step 21
Verduidelik die uitset wanneer die 741-op-versterker gelaai word.
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Wanneer die 741-op-versterker gelaai word, sal dit 'n sinusgolf genereer.
Step 22
Noem TWEE verbreekings wat die op-versterker tot die werking van die kringt in FIGUUR 4.7 beïnvloed.
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Twee verbreekings wat die op-versterker beïnvloed, is die faseverskuiwing en die versterking se stabiliteit.
