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difference between Icc and Ic ??

maark6000

Feb 8, 2012
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I'm working on a section on biasing transistors, and nowhere in the text up to now do they mention Icc. But suddenly in the homework problems, there is mention of Icc. What does this term mean, and how is it different than Ic?

Thanks,
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
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I'd say it's a finger ptpblem of someone typign Ic
 

CocaCola

Apr 7, 2012
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Probably fat fingers like Steve said, but...

IC = Integrated circuit
IC_Component.jpg


ICC = Integrated chip card
card_batch.jpg
 

maark6000

Feb 8, 2012
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here is the exact wording of the problem:

"Design a circuit using voltage-divider bias for the following specifications: Vcc=9 v, Icc(max) = 5 mA, Ic = 1.5 mA, and Vce = 3 v. The transistor is a 2N3904."

I think they mean that the overall circuit, from Vcc to ground should only have 5 ma current going thru it. But I'm not sure.
 

CocaCola

Apr 7, 2012
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here is the exact wording of the problem:

"Design a circuit using voltage-divider bias for the following specifications: Vcc=9 v, Icc(max) = 5 mA, Ic = 1.5 mA, and Vce = 3 v. The transistor is a 2N3904."

I think they mean that the overall circuit, from Vcc to ground should only have 5 ma current going thru it. But I'm not sure.

In that reference, yes Icc is the supply current, Ic is the collector current...
 
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maark6000

Feb 8, 2012
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Cool. I suppose that would mean that at some point I might see an Iee(max) were the transistor to be a PNP. Thanks for confirming my suspicions. :)
 
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