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Definition for self-commutated switches

PSIM (an electronic circuit simulation software package) classifies GTO, IGBT, MOSFET as self-commutated switches. However, I couldn't find a clear definition of this. This is from PSIM manual: S …
emnha's user avatar
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1 vote
3 answers
131 views

What is the current - voltage relation in a wire?

This is a question from a TV game show. Fill the blank with appropriate words. Current flowing through a wire is ... to the voltage drop across the wire. The answer in the dots is "proportiona …
emnha's user avatar
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8 votes
1 answer
11k views

Meaning of Sigma in Laplace transform

I found the question below in a forum and I also have same problem. Unfortunately, there is no answer at all so I will post it here hope someone could make it clear. A gain relation in a circuit of R …
emnha's user avatar
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