Current Source

[[email protected]]

Hi,

I want to know what will the value of the "V4" that keeps the difference bewtween the inverting and non inverting inputs zero.

http://www.ecircuitcenter.com/Circuits/curr_src1/curr_src1.htm

jess

 

[Maynard A. Philbrook Jr.]

Hi,

I want to know what will the value of the "V4" that keeps the difference bewtween the inverting and non inverting inputs zero.

http://www.ecircuitcenter.com/Circuits/curr_src1/curr_src1.htm

jess

Not sure what node you are referring to, so I will assume it is #4 which
is the op-amp output node.

Transistors have an average band gap of ~650mV at room temperature and
it should be 650 mV more than what is at the emitter.

With that, you should be able to construct the rest. Good luck with
your home work.

Jamie