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Diode symbol confusion

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N_Cook

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Jul 15, 2010, 9:36:00 AM7/15/10
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on one schematic
If a straight bar of cathode and triangle represent a signal diode
Same with a small return towards the triangle from the bar represents a
zener diode
What does the symbol mean with 2 barbs to the bar , one towards the anode
and the other in the other direction.
In the context of the circuit it could mean high speed or shottke , either
or both? just in passing, if anyone happens to know.


JW

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Jul 15, 2010, 9:42:11 AM7/15/10
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On Thu, 15 Jul 2010 14:36:00 +0100 "N_Cook" <div...@tcp.co.uk> wrote in
Message id: <i1n2qo$vn4$1...@news.eternal-september.org>:

http://en.wikipedia.org/wiki/Diode
http://en.wikipedia.org/wiki/Zener_diode
http://en.wikipedia.org/wiki/Schottky_diode

William Sommerwerck

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Jul 15, 2010, 10:14:12 AM7/15/10
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> What does the symbol mean with 2 barbs to the bar...?

It's supposed to look something like the letter Z -- hence, a Zener diode.


N_Cook

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Jul 15, 2010, 10:34:11 AM7/15/10
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William Sommerwerck <grizzle...@comcast.net> wrote in message
news:i1n54b$9pf$1...@news.eternal-september.org...

> > What does the symbol mean with 2 barbs to the bar...?
>
> It's supposed to look something like the letter Z -- hence, a Zener diode.
>
>

That is logical and my experience too but not in this case , hence the
query.
One barb represents zeners in the symbol set used on this schematic, so what
does the 2 barb (normally zener) symbol mean here?


ian field

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Jul 15, 2010, 11:02:37 AM7/15/10
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"N_Cook" <div...@tcp.co.uk> wrote in message
news:i1n67v$efi$1...@news.eternal-september.org...

The various typefaces used by the many people who produce schematics add to
the confusion and some use (often inaccurate) variations of the standard
symbols making matters even worse.

There are of course yet more different types of diode, some of which also
have their own symbol (and variants).

As to answer your original question, it would be hard to improve on the
links JW posted.


Arfa Daily

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Jul 15, 2010, 11:53:04 AM7/15/10
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"William Sommerwerck" <grizzle...@comcast.net> wrote in message
news:i1n54b$9pf$1...@news.eternal-september.org...

>> What does the symbol mean with 2 barbs to the bar...?
>
> It's supposed to look something like the letter Z -- hence, a Zener diode.
>
>

I have seen the two barbs being each at an angle to the horizontal bar,
representing a zener, and the two barbs perpendicular to the bar,
representing a Schottky diode. Schottky diodes also seen as the more
elaborate curl at each end of the bar, as shown in the Wiki reference.

Arfa

Meat Plow

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Jul 15, 2010, 12:17:35 PM7/15/10
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Shotts look more like an S for an obvious reason :)

--
Altopia.com $12/m 10 unlimited connections

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