E electricity86 New Member Feb 10, 2009 #1 A pnp BJT that is in forward active state has IE = β*IB, And a npn BJT that is in forward active state has IC = β*IB? I intended to write it in the theory forum, but somehow i was denied to post a message there. Thanks! Last edited: Feb 10, 2009
A pnp BJT that is in forward active state has IE = β*IB, And a npn BJT that is in forward active state has IC = β*IB? I intended to write it in the theory forum, but somehow i was denied to post a message there. Thanks!
Roff Well-Known Member Feb 10, 2009 #2 electricity86 said: A pnp BJT that is in forward active state has IE = β*IB, And a npn BJT that is in forward active state has IC = β*IB? I intended to write it in the theory forum, but somehow i was denied to post a message there. Thanks! Click to expand... PNP and NPN both have IC = β*IB. IE=(β+1)*IB, in both cases. I'm hoping you meant to post this as a question as opposed to fact.
electricity86 said: A pnp BJT that is in forward active state has IE = β*IB, And a npn BJT that is in forward active state has IC = β*IB? I intended to write it in the theory forum, but somehow i was denied to post a message there. Thanks! Click to expand... PNP and NPN both have IC = β*IB. IE=(β+1)*IB, in both cases. I'm hoping you meant to post this as a question as opposed to fact.
E electricity86 New Member Feb 10, 2009 #3 Thanks Ron. Does in small signal, ic = β*ib? or does it only in large signal?
Roff Well-Known Member Feb 10, 2009 #4 electricity86 said: Thanks Ron. Does in small signal, ic = β*ib? or does it only in large signal? Click to expand... NPNs and PNPs have identical small-signal models. Why would you think they would be different?
electricity86 said: Thanks Ron. Does in small signal, ic = β*ib? or does it only in large signal? Click to expand... NPNs and PNPs have identical small-signal models. Why would you think they would be different?
E electricity86 New Member Feb 10, 2009 #5 i didnt ask about the difference between PNP and NPN but about the difference between Small Signal and Large Signal.
i didnt ask about the difference between PNP and NPN but about the difference between Small Signal and Large Signal.
Roff Well-Known Member Feb 10, 2009 #6 electricity86 said: i didnt ask about the difference between PNP and NPN but about the difference between Small Signal and Large Signal. Click to expand... Sorry. Yes, you are correct. In small signal, ic = β*ib.
electricity86 said: i didnt ask about the difference between PNP and NPN but about the difference between Small Signal and Large Signal. Click to expand... Sorry. Yes, you are correct. In small signal, ic = β*ib.
E electricity86 New Member Feb 10, 2009 #7 Thanks Ron. By the way, are you israeli? you got a familiar name.
Roff Well-Known Member Feb 10, 2009 #8 electricity86 said: Thanks Ron. By the way, are you israeli? you got a familiar name. Click to expand... No, I'm not Israeli. See Where did your nickname come from for the explanation.
electricity86 said: Thanks Ron. By the way, are you israeli? you got a familiar name. Click to expand... No, I'm not Israeli. See Where did your nickname come from for the explanation.