Verwys na FIGUUR 4.1 hieronder en beantwoor die vrae wat volg - NSC Electrical Technology Electronics - Question 4 - 2021 - Paper 1
Question 4
Verwys na FIGUUR 4.1 hieronder en beantwoor die vrae wat volg.
4.1.1 Identifiseer die multivibrator in FIGUUR 4.1.
4.1.2 Noem die polere vir die plus en die omkeri... show full transcript
Worked Solution & Example Answer:Verwys na FIGUUR 4.1 hieronder en beantwoor die vrae wat volg - NSC Electrical Technology Electronics - Question 4 - 2021 - Paper 1
Step 1
4.1.1 Identifiseer die multivibrator in FIGUUR 4.1.
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Die multivibrator in FIGUUR 4.1 is 'n bistabiele multivibrator.
Step 2
4.1.2 Noem die polere vir die plus en die omkerings verskil wanneer skakelaars ge druk word.
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Die polere vir die plus en omkerings verskil is +9V en -9V.
Step 3
4.1.3 Noem TIME-funksies van die 741-op-versterker in die kring.
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Die 741-op-versterker werk soos 'n vergelyker wat die twee spannings op die inset vergelyk.
Step 4
4.1.4 Watter LED sal meervoudenspeakers wanneer skakelaars ge druk word?
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Die LED(D1) sal aanlig wanneer skakelaars ge druk word.
Step 5
4.1.5 Noem die polaire wat die spanning wat op pen 3 te sien is bedoel is.
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Die polaire wat die spanning op pen 3 aanwend is positief.
Step 6
4.2.1 Identifiseer die komponent wat die idle laai van kapasitore.
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Die komponent is die weerstand (R1).
Step 7
4.2.2 Verdubbel wanneer die kringuitset van toestand sal verander.
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Die kringuitset sal verander wanneer 'n toestand groter as Vinv word.
Step 8
4.2.3 Op die ANTWOORDBLAD van VRAAG 4.2, teken die spanning sy butt A en B as die inset van die kring aangewend word.
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Die spanning op die inset sal soos 'n sneller-puls verskyn.
Step 9
4.3.1 Identifiseer die elemente wat soos 'n kapsulai.
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Die elemente is die twee weerstande R1 en R2.
Step 10
4.3.2 Verdubbel waar die uitsit aanhoudend tussen die hoog en laag toestand sal seker bevoordeel word?
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Die uitsit sal aanhoudend sal wissel tussen die hoog en laag toestand.
Step 11
4.3.3 Noem die volle benaming 741-CS-op-versterker-ewekwivalent van.
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Die volledige benaming is die 741-operasionele versterker.
Step 12
4.5.1 Noem die funksie van 'n sommeerversterker.
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Die funksie van 'n sommeerversterker is om die som van meerdere insetspanninge te produseer.
Step 13
4.5.2 Bereken die uitsetspanning by B.
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Die uitsetspanning by B kan bereken word met die formule
Vout=−(Rf/Rin)imesVin
Step 14
4.5.3 Bereken die uitsetspanning by C.
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Die uitsetspanning by C is
Vout=(R2/(R1+R2))imesVin
Step 15
4.5.4 Bereken die waarde van die terugvoer by A.
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Die waarde van die terugvoer by A is gegee deur Rf=R1+R2.
Step 16
4.5.5 Bereken die totale wins by D.
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Die totale wins by D kan bereken word as die verhouding van die uitset tot die inset.
Step 17
4.6.1 Identifiseer die kring in FIGUR 4.6(A) en (B).
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Die kring in FIGUR 4.6(A) is 'n passiewe RC differensierder.
Step 18
4.6.2 Verdubbel die invloed van 'n lang tydsonstant op die werking van die kring in FIGUR 4.6(A) sê.
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Die invloed is dat die kapasitor die insetseine sal gladstryk.
Step 19
4.6.3 Verdubbel die funksie van die kring in FIGUR 4.6(B).
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Die funksie van die kring in FIGUR 4.6(B) is om die lae frekwensie te filter.
Step 20
4.7.1 Op die ANTWOORDBLAD van VRAAG 4.7 en VRAAG 4.2, teken die uitsitvorming om die volgende insettinge op die kring aangewend word.
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Die uitsitvorming sal die ingangsgolf volg.
Step 21
4.7.2 Noem TWEE verbylesings wat die op-versterker to 4,2 by die kring in FIGUUR 4.7 by.
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Twee verbylesings is dat dit die impendansie vergemaklik en die uitsit meer stabiel maak.
