Alt-BEAM Archive

Message #05813



To: beam@sgiblab.sgi.com
From: "Richard Caudle" richard@cqc.com
Date: Fri, 20 Aug 1999 22:18:48 -0500
Subject: [alt-beam] Re: MOSFET sensor thingy



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Hi Ben,

I'll take a whack at a simple scheme.

LED 2N7000 =

gnd------------------|<|---------source (pin 1)
=

antenna-------------------------gate (pin 2)
=

3vdc-----------------------------drain (pin 3)

Not many simpler. I later added a 3.3M resistor between the gate and V+. =
I made an E-vore using two of these and two pager motors (in series with th=
e LEDs). I put a 4700uf cap on to store juice for the motors. It would =
be finished except I have no suitable solar cells to use. I may sojourn to=
Shadio Rack in the AM to get some of their solarcells. =

=

Richard Caudle
richard@cqc.com
Home ICQ - Frankendaddy

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Guardians of the sacred words: Nee, Ptang, and NeeWhon! =



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>




Hi Ben, DIV>
 

I'll take a whac=
k at a =

simple scheme.

 


size=3D2>           =
            &nb=
sp;   LED        &nb=
sp;  =

2N7000           &nb=
sp;    =



size=3D2>gnd------------------|<|---------source (pin 1)


size=3D2>           =
            &nb=
sp;            =
            &nb=
sp;            =
  


size=3D2>antenna-------------------------gate    (pin =

2)


size=3D2>           =
            &nb=
sp;            =
            &nb=
sp;            =
  


size=3D2>3vdc-----------------------------drain  (pin 3)
DIV>
 

Not many simpler=
.  I =

later added a 3.3M resistor between the gate and V+.  I made =

an E-vore using two of these and two pager motors (in series with the =

LEDs).  I put a 4700uf cap on to store juice for the motors. &nb=
sp; =

It would be finished except I have no suitable solar cells to use.  I =
may =

sojourn to Shadio Rack in the AM to get some of their solarcells.  =



size=3D2>           =
            &nb=
sp;            =
            &nb=
sp;            =
   =


Richard Caudle R>
href=3D"mailto:richard@cqc.com">richard@cqc.com

Home ICQ - =

Frankendaddy





Guardians of the=
sacred =

words: Nee, Ptang, and NeeWhon!       &n=
bsp; =





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