Today's Message Index:
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1. 02:13 PM - Re: Re: OVM-14 MkIII (Neal George)
2. 07:38 PM - Re: OVM14 MkIII, rev P1 (user9253)
Message 1
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| Subject: | Re: OVM-14 MkIII |
Does it really do that?
Probably not.=C2- I may have mentioned that I have an unreliable memory.
Due to the nature of LR3 crowbar ov protection,
an OV event is followed milliseconds later
by a LV event. There would not be any time
to sense, display and perceive an OV condition.
That behavior I /do/ remember, from years of you repeating it (so that we d
ullards might learn it).=C2- And that=99s what spurred my comment =93 the way
I understood the OV event in a Z-figure environment, OV would occur and be t
erminated before the lamp could heat up; the chances of pilot notice are exc
eedingly small.=C2- Other annunciations would be necessary to indicate that an
OV event preceded the LV condition.
Neal
Message 2
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| Subject: | Re: OVM14 MkIII, rev P1 |
If the overvoltage module ground wire is connected to ground using a screw in an
easily accessible location,
then it would be fairly easy to test the OVM using 3 "D" cell batteries in series
per this thread:
http://forums.matronics.com/viewtopic.php?p=480365
The advantage of this method is that every component of the OVM is tested including
all resistors and the LM431.
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=511485#511485
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