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June 2004

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Subject:
From:
Brian Ellis <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Sat, 12 Jun 2004 09:15:16 +0300
Content-Type:
text/plain
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text/plain (99 lines)
But please tell me what mechanism could cause an EPROM, of any type, to
be affected by a magnetic field. I maintain that it is impossible, but
I'm open to correction if you can show me a logical explanation.

Brian

Dehoyos, Ramon wrote:
>         Zap.
>
>
>         Hi Brian:
>         In a previous life we used to magnetize our screw drivers by placing them inside an inductor and turn on the voltage to the inductor. The power to attract metal from those screw drivers was very strong. The magnetic field strength depends on the way it is done. I would not like to have one of those screw drivers in contact with and EEPROM and take the risk of scrambling some of the program inside.
>         Regards
>         Ramon
>
>
>
> -----Original Message-----
> From: Brian Ellis [mailto:[log in to unmask]]
> Sent: Friday, June 11, 2004 11:29 AM
> To: TechNet E-Mail Forum.; Dehoyos, Ramon
> Subject: Re: [TN] Magnetic Screwdrivers
>
>
> Can you please explain to me in three-letter words how a weak magnetic
> field from a screwdriver can affect EEPROMs and UVEPROMs?
>
> Brian
>
> Dehoyos, Ramon wrote:
>
>
>>        Hi Ken:
>>        It is not a good practice. There may be  parts like EPROMs or UVPROMs on the board that may be affected by the magnetic flux. Although some of the test technicians claim that the flux from a screw driver is not strong enough to cause any damage.
>>        To be on the safe side use clip screw drivers instead.
>>        Regards,
>>        Ramon
>>
>>
>>-----Original Message-----
>>From: Bloomquist, Ken [mailto:[log in to unmask]]
>>Sent: Thursday, June 10, 2004 4:47 PM
>>To: [log in to unmask]
>>Subject: [TN] Magnetic Screwdrivers
>>
>>
>>This is my second question today. I hope that's ok and I'm not over my limit ;-)
>>
>>We have a person asking if it's OK to use magnetic tipped screwdrivers to assembly our products. We don't have any floppy or hard drives in them but we do have lots of active components. My feeling is that there is no problem but I thought I'd as just for piece of mind.
>>
>>Thanks and thanks for the quick response on my earlier fire retardant question, you people are great!!
>>
>>KennyB
>>
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