[Coco] OT: electronics question
James Dessart
james at skwirl.ca
Tue May 25 21:42:30 EDT 2004
I've got a 7402 I pulled from a board. I hooked it up to a 5v source
and ground. When I sample the inputs, I get a lowish voltage (around 2
volts, unconnected pins), but when I sample the output, regardless of
how I drive the inputs, I get a really, really low voltage. Do I need
to do something in particular to drive the inputs? I'm simply using a
switch to vcc right now. Should I set it up with the switches
triggering transistors?
It could be burned out, I used a butane torch to take it off the board.
It's pretty thick PCB, and I can't seem to get the chips off any other
way.
James
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