[Diy_efi] WB testing problems
bcroe at juno.com
bcroe at juno.com
Sat Apr 20 17:31:49 GMT 2002
Since the source of the problem is C12 leakage, you
could get rid of the leakage. First make sure C12 is
correctly polarized in the circuit. You could get a more
expensive tantalum cap of about that value. To eliminate
the leakage completely get some non polarized caps.
2 or 3 caps in parallel of 1 ufd each should do it.
Bruce Roe
On Thu, 18 Apr 2002 21:20:15 -0400 Stephen Andersen
<SAndersen at advan-tek.com> writes:
> Okay, I have done more testing.
>
> Bottom line is that C12 IS leaking. When I disconnect it (at the
> + terminal) everything goes to 7.75-7.8 volts, particularly
> terminal 5 of U3.
>
> So, now, what is the solution to this? I had already replaced
> the cap itself with no change. Any ideas? What will this affect?
> Steve
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