Author Topic: current flow  (Read 825 times)

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Offline m3vuvTopic starter

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current flow
« 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?
 

Offline soldar

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Re: current flow
« 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/

All my posts are made with 100% recycled electrons and bare traces of grey matter.
 

Offline SparkyFX

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Re: current flow
« 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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Offline garethw

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Re: current flow
« 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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Offline David Hess

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Re: current flow
« 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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