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R - Széchenyi István Egyetem

R - Széchenyi István Egyetem

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Példák<br />

Számítsuk ki a kapcsolásban jelölt feszültségeket és áramokat<br />

R<br />

1<br />

R4<br />

R5<br />

= R = R = 40Ω<br />

2<br />

= 60Ω<br />

=120Ω<br />

U 300V<br />

0 =<br />

Re = R × R + R + R × R<br />

1 2 3 4 5 = 40Ω×<br />

40Ω<br />

+ 40Ω<br />

+ 60Ω×<br />

120Ω<br />

= 100Ω<br />

U 300V<br />

R<br />

40Ω<br />

1<br />

0 I = = = 3A<br />

I = I ⋅ = 3A⋅<br />

= 1,<br />

5A<br />

2 3<br />

3<br />

R 100Ω<br />

R + R 40Ω<br />

+ 40Ω<br />

1 2<br />

e<br />

R<br />

120Ω<br />

5 I = I ⋅ = 3A<br />

⋅<br />

= 2A<br />

4 3<br />

R + R 60Ω<br />

+ 120Ω<br />

4 5<br />

U = U = I ⋅ R = 1,<br />

5A⋅<br />

40Ω<br />

= 60V<br />

1<br />

2<br />

2<br />

U =<br />

I ⋅ R = 2A<br />

⋅60Ω<br />

= 120V<br />

4<br />

4<br />

4<br />

2<br />

Elektrotechnika 78<br />

3

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