Don't buy any more.
Copying them (pretty obvious considering the lengths you want to go to)
will be illegal.

Reverse engineering them is a different story however...


Ed Edmondson wrote:
>
> I have a child's toy which has a 50% failure rate.  I am trying to determine
> the reason for the failure.  Why?  Something to do.... My four children want
> to know why the toys are dying like fly's.
>
> I have two separate integrated circuits contained on two COB's (Chip On
> Board).  A COB actually has the integrated circuit die soldered to a small PCB
> and covered with some form of molding compound (usually black).  I need to
> dissolve this compound to see the die under it.  Then I can get
> photomicrographs made of each die to determine if ESD or some other cause
> killed the toy.  Anyone know what this compound might be?  How about
> suggestions on what solvent might dissolve the compound without damaging the
> device under it?  Any suggestions??
>
> I also have several transistors (??) with what appear to be possibly house
> markings.  They have the following numbers; S9012, S8050, S9013, and SS9015.
> They are in leaded TO-92 packages.  The S9013 is also marked KSP2222A in
> another toy of the same make.  This indicates these are probably standard
> devices.  The only other markings are the date code on the devices (D-847,
> H-844, D-839, ect.)
>
> Any suggestions or directions where to get my questions answered would be
> appreciated.
>
> Thanks,
> Ed

--
Steam engines may be out of fashion, but when you consider that an
internal combustion engine would require recovery of waste heat by
transfer just before top dead centre then fashion becomes rather
redundant, USE STRATIFIED HEAT EXCHANGERS ! and external combustion.

You heard it first from: Graham Daniel, managing director of Electronic
Product Enhancements.
Phone NZ 04 387 4347, Fax NZ 04 3874348, Cellular NZ 021 954 196.