12/17/86: UV POWER by Delphi, | Category: Delphi - Hardware Hacking | 1 comment - (Comments are closed)

UV POWER

20413 17DEC86-0209 Hardware Hacking
UV POWER
From: PKW To: MARTYGOODMAN

MARTY–
IF YOU RECALL THE ADVICE YOU GAVE CONCERNING TESTING AN EPROMMER– YOU
MENTIONED PRGRAMMING A
DOZEN OR SO EPROMS WITH ALL 1′S, THEN PLACING EACH AN IDENTICAL DISTANCE AND
PLACEMENT UNDER A UV LIGHT FOR 15 SECONDS EACH.
WHAT RANGE OF WATTAGE FOR THE UV LIGHT ARE WE TALKING ABOUT, AND WHAT DISTANCE?
I BET IT DOEN NOT HAVE TO BE >>TOO< < PARTICULAR,
BUT THE UV LIGHT AVAILABLE TO ME COULD MELT THE POLAR ICE CAP.
– PKW

1 comment to UV POWER

  • pucc_unknown

    20429 17DEC86-0304 Hardware Hacking
    RE: UV POWER (Re: Msg 20413)
    From: MARTYGOODMAN To: PKW

    The wattage and the distance are worthless parameters..
    uttterly meaningless!!!!

    Set up yer system so that the EPROM is not completely
    eraseed in less than one minute (for that would indicate
    too strong UV that might damage the chip).

    Also, set it up so that it takes at least 30 seconds
    for the first bits to fade… that will allow you to
    make more accurate timings on the system.

    —marty