OK, this EPROM refused to program or erase, so I decided to test out my
micro-inverter on it. Basically, the uI is a small box built out of bits of
a Kodak MAX disposable camera flash. It charges a 120uF capacitor up to 200V
and dumps it into the output. The effect on semiconductors is quite
spectacular, and usually involves exploding bond wires and flying silicon.

Basically, this is my variant on the age-old theme of smashing failed ICs to
bits with a very large hammer.

Photos:
  In the middle of the Big Zap:
    <http://www.philpem.me.uk/bigbang/epromboom.jpg>    [  21 Kbytes ]
  The micro-inverter (close-up)
    <http://www.philpem.me.uk/bigbang/inverter.jpg>     [ 367 Kbytes ]
  The EPROM (after blasting)
    <http://www.philpem.me.uk/bigbang/blastedeprom.jpg> [ 815 Kbytes ]

If anyone wants any more info on the "experiment" let me know. I've got CAD
files for the inverter PCB (single-sided 0.8mm, based on the "Rev C" Kodak
flash with an NPN strobe transistor) if anyone wants to build one.

Later.
-- 
Phil.                              | Acorn RiscPC600 SA220 64MB+6GB 100baseT
philpem@philpem.me.uk              | Athlon64 3200+ A8VDeluxe R2 512MB+100GB
http://www.philpem.me.uk/          | Sony MZ-N710 NetMD Minidisc
... A bird in the hand is safer than one overhead.
-- 
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