Re: blowing ULN2803C on LPF-Control
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ULN2803 on the LPF Control board. I found the problem. The high filter ribbon cable was inverted from what it should be. Embarrassing mistake.? dave
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On Mar 12, 2025, at 4:40?PM, Albert Peter via groups.io <albertfpeter@...> wrote:
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Dave, Specifically which U10 went on which board. We have multiple ICs with the same designation.
Could you also give a run down of your configuration? V12 boards from what source, etc??
Al
I have blown two U10's during receiver calibration this week.? This is after operating for several hours.? One popped when calibrating the 10m band and one when calibrating 6m.? A nice puff of smoke is generated.? Any thoughts on why this may be happening?
dave, n3ds
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