Re: Low-voltage diac?

From: Reinhard Zwirner (reinhard_zwirner_at_web.de)
Date: 12/31/04


Date: Fri, 31 Dec 2004 20:07:45 +0100

Gerard Bok schrieb:
>
> On Thu, 30 Dec 2004 17:06:20 +0100, Reinhard Zwirner
> <reinhard_zwirner@web.de> wrote:
>
> >Neil Preston schrieb:
> >>
> >> Is there available a DIAC with breakover voltage ratings in the 5-15V range?
> >> Or an equivalent device?
> >>
> >> All I've seen so far are in the 50-60v range.
> >>
> >Maybe 2 zeners connected "back-to-back" could work; "breakover"-voltage
> >would be [Uz + 0.7] V.
>
> The original message read "... and I need the negative resistance
> characteristics ..." :-)
>
> Your solution will mimic a low voltage diac but won't provide the
> negative resistance characteristics.

You're right; I've just read the first part of Neil's message <sigh>.
On the other hand I successfully built a low voltage dimmer with such
a "diac" a few years ago.

Greetinx

Reinhard



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