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SachinAttri1-Visitor
1-Visitor
March 3, 2018
Solved

How to model a Transistor in MATHCad?

  • March 3, 2018
  • 4 replies
  • 7815 views

Hi All. I m trying to model a circuit which is basically a CE amplifier.

 

I m not sure how to start. Can anyone please help?

Best answer by LucMeekes

How accurate do you want to model the transistor?

For what purpose do you want to model: Large signal or small signal (AC)?

 

Success!
Luc

4 replies

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-MFra-21-Topaz II
21-Topaz II
March 3, 2018

Hi,

sawtooth.jpg

L
LucMeekes23-Emerald IVAnswer
23-Emerald IV
March 3, 2018

How accurate do you want to model the transistor?

For what purpose do you want to model: Large signal or small signal (AC)?

 

Success!
Luc

S
SachinAttri1-VisitorAuthor
1-Visitor
March 4, 2018

As accurate as a Practical model. I want to perform worst case analysis as well using this model..

L
LucMeekes23-Emerald IV
23-Emerald IV
March 4, 2018

What do you think is a 'Practical' model?

In order to model you must have a circuit, know parameters of the components in the circuit. Do you have those?

What kind of worst-case scenario's do you want to investigate...component tolerances, environmental conditions, EMI situations?

But most importantly: why use Mathcad, and not an electronic circuit simulation application (e.g. LTspice)?

 

Success!
Luc

 

N
nas0k1-Visitor
1-Visitor
March 5, 2018

Maybe something like the attached? There're P4 so I hope you can open them.

 

Norm

    S
    SachinAttri1-VisitorAuthor
    1-Visitor
    March 22, 2018

    so sorry. i could not open.

    Can you please help me with this

    -
    -MFra-21-Topaz II
    21-Topaz II
    March 23, 2018

    Please, you should specify to whom of the community you refer.

    -
    -MFra-21-Topaz II
    21-Topaz II
    March 19, 2018

    Hi,

    BJT0.jpgBJT1.jpgBJT2.jpgBJT3.jpgBJT4.jpgBJT5.jpgBJT6.jpg

    BJT7.jpgBJT8.jpg

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