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- en di... 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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Die multivibrator in FIGUUR 4.1 is 'n bistabiele multivibrator.
Step 2
Noem die polarisiteit van die plus- en die omkeertik serskaf wanneer skakelaars ge druk word.
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Die polarisiteit van die plus-serskaf is +9V en die omkeertik serskaf is -9V.
Step 3
Noem TIME TWEE funksies van die 741-op-versterker in die kring.
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Die 741-op-versterker werk as 'n vergelyker en skep 'n uitset sein wat die toestand van die insette vergelyk.
Step 4
Watter LED sal meer aangeskakel wees wanneer skakelaar S1 gedruk word?
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LED1 sal meer aangeskakel wees wanneer skakelaar S1 gedruk word.
Step 5
Noem die polarisiteit van die spanning wat op pin 3 verkondig is in die staat geskakeld by druk.
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Die polarisiteit van die spanning op pin 3 is positief.
Step 6
Noem die komponent wat die lae van kapasitor C1 verander.
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Die komponent wat die lae van kapasitor C1 verander is die weerstand R2.
Step 7
Verdun dit wanneer die kringinstel van toestand sal verander.
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Die toestand sal verander wanneer die ingangsspanning groter as die drempelwaarde is.
Step 8
Op die ANTWOORDBLOK van VRAAG 4.2, teken die spanning sybunt B as die insette hieronder op die kring aangewend word.
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Die spanning sal 'n skielike verandering toon, wat 'n kort puls genereer voor die stabilisering.
Step 9
Skryf die uitset van die 741-op-versterker monostabiele multivibrator.
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Die uitset sal 'n enkele puls wees wanneer die op-versterker aktief is.
Step 10
Identifiseer die komponente wat vir die lae van kapasitor C2.
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Die komponente is R3.
Step 11
Verdud dit wanneer die insette aanvaar is en die kringplan in die toestand sal verander.
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Die insette sal die toestand onmiddellik verander.
Step 12
Skryf die volledig benaming 741-cp-op-versterker-eweknie van.
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Die volledig benaming is die 741-operasionele versterker.
Step 13
Noem die funksie van 'n sommeer versterker.
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'n Sommeer versterker voeg verskeie insette bymekaar om 'n enkele uitset te lewer.
Step 14
Bereken die uitsetspanning by B.
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Die uitsetspanning by B is 10.6V.
Step 15
Bereken die uitsetspanning by C.
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Die uitsetspanning by C is 8.5V.
Step 16
Bereken die waarde van die terugvoer by A.
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Die waarde van die terugvoer by A is 4.
Step 17
Bereken die totale wins by D.
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Die totale wins by D is 6.7.
Step 18
Identifiseer die kring in FIGUUR 4.6 aan (B).
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Die kring is 'n passiewe RC differensierder.
Step 19
Verdun dit invloed van lang tydsonstante op die werking van die kring in die FIGUUR 4.6 aan (B).
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Die invloed sal die vermoë van die kring om vinnige veranderinge te volg verminder.
Step 20
Verdun dit die funksie van die kring in FIGUUR 4.6(B).
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Die funksie is om die verskil tussen twee spannings te lewer.
Step 21
Neem twee weerstands wat op die versterker tee on FIGUUR 4.7 by.
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Die twee weerstands wat op die versterker tee is R1 en R2.
Step 22
Neem die uitsetimpedansie wat verbeter.
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Die uitsetimpedansie sal afhang van die weerstande in die kring.
Step 23
Noem twee verborge wat die op-versterker te by FIGUUR 4.7 by.
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Die twee verborge is die omskakelingsverhouding en die versterking.
