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AVG Free Edition 2012.0.1831 (32-bit)KIRCHOFF LAW
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kirchoff law terbahagi kepada dua :
KVL:kirchoff current law
KCL:kirchoff voltage law
KVL menggunakan loop/mesh
KCL menggunakan node
apa itu rintangan????
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Rintangan elektrik
Daripada Wikipedia, ensiklopedia bebas.
Rintangan elektrik ialah ukuran penentangan terhadap pengaliran arus elektrik di dalam sesebuah litar lengkap oleh komponen perintang (atau apa-apa objek). Dalam persamaan elektrik, ia sering diwakili oleh simbol R. Unit SInya ohm (Ω)
all about engineering electronic & communication
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ask anything about that course ,
follow and follow!!
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Equations for the transformation from Δ-load to Y-load 3-phase circuit
The general idea is to compute the impedance Ry at a terminal node of the Y circuit with impedances R', R'' to adjacent nodes in the Δ circuit by
where RΔ are all impedances in the Δ circuit. This yields the specific formulae
[edit]Equations for the transformation from Y-load to Δ-load 3-phase circuit
The general idea is to compute an impedance RΔ in the Δ circuit by
where RP = R1R2 + R2R3 + R3R1 is the sum of the products of all pairs of impedances in the Y circuit and Ropposite is the impedance of the node in the Y circuit which is opposite the edge with RΔ. The formula for the individual edges are thus
