simulation yields negative current.wierd!!

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aqe911@hotmail.com - 31 Jul 2008 03:59 GMT

hello.
i have a problem in figuring out the wierd negative current that
appeared in the cct i was simulating. a 5 volt battery to the base of
transistor, 12 volt battery via a relay to the collector and ground to
the emmitter. the transister is an npn transistor along with the
resistor to base n collector. the current is nagative but the relay
seems to be working fine. got any clue????
base +ve current
but collector n emitter is having -ve current

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John Larkin - 31 Jul 2008 05:26 GMT

>hello.
>i have a problem in figuring out the wierd negative current that
[quoted text clipped - 5 lines]
>base +ve current
>but collector n emitter is having -ve current

Current should be flowing into the base, into the collector, and out
of the emitter. Whether that means positive or negative to you depends
on where you're standing.

I have no idea what "the resistor to base n collector" might mean in
English.

John

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Phil Allison - 31 Jul 2008 07:46 GMT

"John Larkin"

> I have no idea what "the resistor to base n collector" might mean in
> English.

** Must be like " bacon n eggs ".

... Phil

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Electronics Forum / Design / July 2008

simulation yields negative current.wierd!!