Differential BJT amplifier

[JohnEG]

What is the purpose of the Collector resistors?

 

[Harald Kapp]

Lacking a picture of the circuit you're questioning, I can only assume that you refer to the load resistors which will convert the collector current into a voltage for further processing in later stages of the amplifier.

Harald

 

[JohnEG]

http://www.ecircuitcenter.com/circuits/bjt_diffamp1/bjt_diffamp1.htm

Specifically RC2

 

[(*steve*)]

Redraw the circuit with those resistors removed and replaced with links.

What happens differently to the points marked as VC1 and VC2?

 

[deepak kumar panda]

Rc1 and Rc2 are nothing but the load for each transistor.if we are taking double ended o/p then we take the o/p 4m both d resistors .