pisomka2024-10-24

Question 1

co su zdroje

Answer 1

zariadenia urcene na upravu a zmenu napajacieho napatia napr. 230V 50Hz

Question 1

aka je blokova schema napajacieho zdroja

Answer 1

TUFS
transformator, usmernovac, filter, stabilizator

Question 2

co robi transformator

Answer 2

meni napatie a priud zo siete na ine pozadovane hodnoty

Question 3

aka je transformatorova rovnica

Answer 3

U1/U2 = N1/N2 = I2/I1

Question 4

aky je jednosmerny usmernovac

Answer 4

najjednoduchsi ale malo ucinny, jedna dioda s transformatorom

Question 5

aky je dvojsmerny usmernovac

Answer 5

vsetku energiu striedaveho prudu meni na jednosmerne napatie a prud
vyzaduje specialny transformator (drahy a tazky)

Question 6

aky je graetzov mostik

Answer 6

lahsia a lacnejsia alternativa dvojcestneho usmernovaca

Question 7

co je filter

Answer 7

sluzi ako vyrovnavacia nadrz

Question 8

cim je tvoreny filter

Answer 8

hlavne paralelne zapojenym kondenzatorom

Question 9

ake su najcastejsie pouzivane filtre

Answer 9

RC a LC filtre

Question 10

co je to stabilizator

Answer 10

stabilizuje napatie

Question 11

ake je typicke prevedenie stabilizatoru

Answer 11

typicke prevedenie je zapojenie so zenerovou diodou

Question 12

ako funguje stabilizator

Answer 12

vyuziva sa velka strmost a velka linearita zaporovej VACH zenerovej diody

Question 13

co vie ovplyvnit stabilizator?

Answer 13

mala zmena v okoli bodu prierazu vyvola velku zmenu tecenia prudu cez zenerovu diodu