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current flow
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Topic: current flow (Read 825 times)
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m3vuv
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current flow
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on:
June 11, 2019, 02:50:23 pm »
ive been led to belive power flows from neg to positive,so why are diode and transistor symbles like they are as in showingthe oposit? am i misisng something here?
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soldar
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Re: current flow
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Reply #1 on:
June 11, 2019, 03:03:39 pm »
This has been discussed to death. You can find many threads discussing this.
https://www.eevblog.com/forum/beginners/why-not-change-conventional-current-to-electron-current/
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SparkyFX
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Re: current flow
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Reply #2 on:
June 11, 2019, 03:03:52 pm »
The technical definition of direction was formed before the physical direction was known, therefore symbols are oriented after the technical direction. Technically holes can "move" by electrons filling the void.
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garethw
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Re: current flow
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Reply #3 on:
June 11, 2019, 03:15:27 pm »
Think of holes as positive charge carriers. The lack of an electron is just as powerful a concept as the electron being present.
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David Hess
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DavidH
Re: current flow
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Reply #4 on:
June 12, 2019, 01:15:18 pm »
It was Franklin's fault:
https://en.wikipedia.org/wiki/Electric_charge#History
He also posited that when matter contained too little of the fluid it was negatively charged, and when it had an excess it was positively charged. For a reason that was not recorded, he identified the term positive with vitreous electricity and negative with resinous electricity.
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