27 Feb
2006
27 Feb
'06
11:57 a.m.
The problem of leakage is certainly not limited to this stuff. Back when
I was making PC boards, I made some boards for a company, and they told
me they were no good. So I took a trip up to their place (very nice
nice, a couple of hundred yards from the Pacific Ocean.) These were high
impedance circuits, and IIRC most didn't work. I had already made *sure*
the boards were clean when they were sent since this was a new customer
and the second time it happend. Some of you already know the answer by
now ... the salty air from the Paficic created the problem.
Well, one came back to bite me.
isolated track to the nearby 9V supply to the CX065B chip. I took out a
few more components to get to the PCB surface, then really cleaned it up.
And then I was getting over 30M leakage.
Put everything back, and it seems to work....
-tony