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Gamal:

  How does a p.n.p works when current flows from negative.

APS:
Can you explain your question. What do you mean "current flows from negative".

desolatordan:

--- Quote from: Gamal on January 06, 2010, 01:40:02 am ---  How does a p.n.p works when current flows from negative.

--- End quote ---

You won't have current flow from a negative to positive node unless it's an active component with some chemical or magnetic emf.

Are you referring to the orientation of the collector/emitter of a pnp versus npn?

Gamal:
 
  Correct, I expect emmiter to collector current flow (negative to positive) n to p through a n.p.n. transistor. Would I get

the same emmiter to collector current flow through a p.n.p. transistor with changed polority? Dont make sense to me that`s

positive to negative current flow (p to n). I am still confused.

                                                                                       Gamal

desolatordan:
http://en.wikipedia.org/wiki/Bjt

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