Alt-BEAM Archive
Message #06042
To: beam@corp.sgi.com
From: "Mike Kulesza" mikekulesza@hotmail.com
Date: Sat, 11 Sep 1999 23:46:50 GMT
Subject: [alt-beam] 2.5M resistor
Hi
On Ian's "Almost Complete Walker with Reverser circuit," the blue resistor
is to be at 2.5MOhms. Well, after searching a few electronics distrbutors, I
wasn't able to find them. "They don't manufacture such values." So i just
bought the 2.4M, and was wondering about whether it can be used on that
circuit.
______________________________________________________
6043 Sat, 11 Sep 1999 21:12:57 -0500 [alt-beam] Re: Spark igniter beam@sgiblab.sgi.com Richard Piotter Record players use a diamond stylus that attaches to a magnetic assembly
with inductors aranged around it. Maybe some newer ones are piezo
electric. I don't know for sure, but all the ones I've ever seen were inductive.
robmc@acay.com.au wrote:
>
> > The way a piezoelectric material works is that it produces a voltage when you
> > compress it, and also it will compress
> > when you apply a voltage.
> >
> > Ben Hitchcock
>
> Doesn't piezo twist or curl when voltage is applied and vice versa? The side to
> side flexing of a stylus in the groove on a record produces voltage in the piezo
> crystal does it not? I guess it is the 'grinding' of the molecules' layers
> producing the electricity.
> If what you say is true can we make piezo muscles?
>
> Rob
--
Richard Piotter
richfile@rconnect.com
The Richfiles Robotics & TI web page:
http://richfiles.calc.org
For the BEAM Robotics list:
BEAM Robotics Tek FAQ
http://people.ne.mediaone.net/bushbo/beam/FAQ.html
6044 Sat, 11 Sep 1999 21:19:29 -0500 [alt-beam] Re: 2.5M resistor beam@sgiblab.sgi.com Richard Piotter Yes, I'm sure you can use it, and also, they do manufacture those. Did
you go to Radio Shack??? They have a very limited selection. Mail Order
From Digi-Key is great, and Tech America is good too.
Mike Kulesza wrote:
>
> Hi
>
> On Ian's "Almost Complete Walker with Reverser circuit," the blue resistor
> is to be at 2.5MOhms. Well, after searching a few electronics distrbutors, I
> wasn't able to find them. "They don't manufacture such values." So i just
> bought the 2.4M, and was wondering about whether it can be used on that
> circuit.
>
> ______________________________________________________
>
6045 Sat, 11 Sep 99 23:32:21 -0600 [alt-beam] Re: 2.5M resistor Ian Bernstein >On Ian's "Almost Complete Walker with Reverser circuit," the blue resistor
>is to be at 2.5MOhms. Well, after searching a few electronics distrbutors, I
>wasn't able to find them. "They don't manufacture such values." So i just
>bought the 2.4M, and was wondering about whether it can be used on that
>circuit.
Yep, that should work. Sorry about the value. I just whipped out the
schematic and didn't really take into account whether the values were
easy to find. Another thing that needs updating on my page. Sigh...
Laterz
*-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-*
Ian Bernstein "aka - Synet" The Master Builder
E-Mail - Ian@beam-online.com
BEAM Online - http://www.beam-online.com
Quote - A Cannibal is a person who walks into a restaurant and
orders a waiter.
- Morey Amsterdam
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