Mail Archives: geda-user/2012/01/17/17:03:39
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On Jan 17, 2012, at 2:38 PM, Rob Butts wrote:
> I'm doing a simple proximity alarm where I use a reed switch on a =
circuit board with two pieces of steel on either side to stick to a =
neodymium magnet. The small circuit board will be sewn into one flap of =
a pouch and the magnet to the flap. I'm using a PIC10F206 Microchip 6 =
pin microcontroller to monitor the switch and chirp a small piezo =
buzzer. My question is will the magnet have any affect on the =
operation of the micro? It is a small magnet just a bit bigger than a =
penny.
>=20
> Thanks
Should have no effect. Ordinary chips are extremely insensitive to =
static magnetic fields.
John Doty Noqsi Aerospace, Ltd.
http://www.noqsi.com/
jpd AT noqsi DOT com
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<html><head></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space; =
"><br><div><div>On Jan 17, 2012, at 2:38 PM, Rob Butts wrote:</div><br =
class=3D"Apple-interchange-newline"><blockquote type=3D"cite">I'm doing =
a simple proximity alarm where I use a reed switch on a circuit board =
with two pieces of steel on either side to stick to a neodymium =
magnet. The small circuit board will be sewn into one flap of a =
pouch and the magnet to the flap. I'm using a PIC10F206 Microchip 6 pin =
microcontroller to monitor the switch and chirp a small piezo =
buzzer. My question is will the magnet have any affect on =
the operation of the micro? It is a small magnet just a bit bigger =
than a penny.<br>
<br>Thanks<br>
</blockquote></div><div><br></div>Should have no effect. Ordinary chips =
are extremely insensitive to static magnetic fields.<div><br><div>
<span class=3D"Apple-style-span" style=3D"border-collapse: separate; =
border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; =
font-size: 12px; font-style: normal; font-variant: normal; font-weight: =
normal; letter-spacing: normal; line-height: normal; text-align: auto; =
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-apple-text-size-adjust: auto; text-transform: none; orphans: 2; =
white-space: normal; widows: 2; word-spacing: 0px; "><span =
class=3D"Apple-style-span" style=3D"border-collapse: separate; =
border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; =
font-size: 12px; font-style: normal; font-variant: normal; font-weight: =
normal; letter-spacing: normal; line-height: normal; text-align: auto; =
-khtml-text-decorations-in-effect: none; text-indent: 0px; =
-apple-text-size-adjust: auto; text-transform: none; orphans: 2; =
white-space: normal; widows: 2; word-spacing: 0px; "><p style=3D"margin: =
0.0px 0.0px 0.0px 0.0px"><font face=3D"Helvetica" size=3D"3" =
style=3D"font: 12.0px Helvetica">John Doty<span =
class=3D"Apple-converted-space"> <span =
class=3D"Apple-converted-space"> </span><span =
class=3D"Apple-converted-tab"> <span =
class=3D"Apple-converted-space"> </span></span></span>Noqsi =
Aerospace, Ltd.</font></p><p style=3D"margin: 0.0px 0.0px 0.0px =
0.0px"><a href=3D"http://www.noqsi.com/">http://www.noqsi.com/</a></p><p =
style=3D"margin: 0.0px 0.0px 0.0px 0.0px"><font face=3D"Helvetica" =
size=3D"3" style=3D"font: 12.0px Helvetica"><a =
href=3D"mailto:jpd AT noqsi DOT com">jpd AT noqsi DOT com</a></font></p><br =
class=3D"Apple-interchange-newline"></span></span>
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<br></div></body></html>=
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