[Amps] Electron HOLE flow

[Roger (K8RI)]

On 8/28/2013 2:33 PM, peter chadwick wrote:
>
>
>
> ========================================
>   Message Received: Aug 28 2013, 07:31 PM
>   From: "peter chadwick" <g8on at fsmail.net>
>   To: "Mike Waters" <mikewate at gmail.com>
>   Cc:
>   Subject: Re: [Amps] Electron HOLE flow
>
>   Scroggie's 1960 book "Principles of Semiconductors" talks of 'holes', and the idea was old then.
  I always found it confusing, especially when we got into majority and 
minority conductors in transistors.
>

If you have to worry about minority carriers in a circuit, there's a 
problem with the circuit.<:-))  Then again I never had to deal with 
minority carriers except in the lab and lifetime measurements, or 
explaining the theory.  With the trades, that was where the vacant 
stares came in.

They are usually only a problem when building devices and setting 
frequency limits.

>   32 years in the semiconductor business and I much prefer tubes!
>

They aren't so bad, but I've always found electron flow easier to 
explain to students.

Electron flow is real, while conventional current is a convenience  "at 
times."

73

Roger (K8RI)

>   73
>
>   Peter G3RZP
>
>
>   ========================================
>    Message Received: Aug 28 2013, 07:05 PM
>    From: "Mike Waters" <mikewate at gmail.com>
>    To: amps at contesting.com
>    Cc:
>    Subject: Re: [Amps] Electron HOLE flow
>
>    Absolutely it is an illusion. IIRC, that was erroneously introduced into
>    textbooks around 1970 the same time as the "electricity flows from positive
>    to negative" nonsense. Whoever came up with the latter never heard of
>    electron flow in a vacuum tube, among other things.
>
>    73, Mike
>    www.w0btu.com
>
>    On Wed, 28 Aug 2013 03:54:29 -0400, K8RI wrote:
>    >
>    > >They still refer to "hole flow" in introductory semiconductors.
>    >
>    > REPLY:
>    >
>    > "Hole flow" is an illusion, much like the moving lights on a theater
>    > marquee. If it helps to understand things fine, but holes don't move. It's
>    > more accurate to say a hole is created in one atom and disappears in
>    > another. For a brief time while the electron is in motion, there are
>    > actually two holes.  Neither one "moves".
>    >
>    > 73, Bill W6WRT
>    >
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