Date : Sun, 26 Feb 2006 20:44:19 +0000 (GMT)
From : Stephen Sudworth <ssudworth@...>
Subject: BEEBUG Eprom programmer
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Hello there,
Has anyone out there built this programmer and got it to work correctly?
I've done the software, and made up the board, after some tinkering its
all working of a fashion (it reads eproms at least).
I suspect that I've blown the TL497, the 1ohm resistor has smoked and
blown (i've now replaced this with a 10ohm as i've got no 1ohm's- it still
gets VERY hot), and there is no voltage on the Vpp pin.
If anyone has had a go at this, i'd welcome any advice you's like to give.
Thanks
Stephen
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<DIV id=RTEContent>Hello there,</DIV> <DIV> </DIV> <DIV>Has anyone
out there built this programmer and got it to work correctly?</DIV> <DIV> </DIV>
<DIV>I've done the software, and made up the board, after some tinkering
its all working of a fashion (it reads eproms at least).</DIV> <DIV> </DIV>
<DIV>I suspect that I've blown the TL497, the 1ohm resistor has
smoked and blown (i've now replaced this with a 10ohm as i've got no 1ohm's-
it still gets VERY hot), and there is no voltage on the Vpp pin.</DIV>
<DIV> </DIV> <DIV>If anyone has had a go at this, i'd welcome any
advice you's like to give.</DIV> <DIV> </DIV> <DIV>Thanks</DIV>
<DIV> </DIV> <DIV>Stephen</DIV><p>
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