Hi Experts,
Thank for all your support for my previous query.

I have another one.I am presently constructing an OPAMP circuit.
I am connecting IC 3130 A to the input of BC 548 Transistor in inverting mode.The Transistor would be connected in Common base configuration. Can any body tell me how to determine the feedback ressistor value for Opamp 3130 A.

I only want to know what criteria will decide OPAMAP feedback resistor selection particularly if Output of OPAMP is connected to Transistor BC548.

I want to construct a full circuit with Opamp 3130 A and BC 548. Can you also tell me how to determine the input resitor values for Opamps ,Rin

Regards
chersam

 

There is so much information missing, like how do you make a common base inverting stage? How much gain do you want? Is it positive or negative? What is the source of the signal you are amplifying, or at least its impedance? etc.

 

What's the matter, #12. Don't you have one of these?

 

I loaned it to Karnac.