Simple current mirror

Wolframore

Joined Jan 21, 2019
2,323
Can you provide more data - specifically what it’s doing that suggests it not working well, what is the current we are talking about, is this compared to another current mirror? Whats the supply voltage, does this change? What are your expectations?
 

BobTPH

Joined Jun 5, 2013
3,510
If you used emitter resistors, you don’t have a current mirror. The cureent is mirrored because Vbe is forced to be the same. With emitter resistors, that is no longer true.

Bob
 

Thread Starter

Zeeus

Joined Apr 17, 2019
615
If you used emitter resistors, you don’t have a current mirror. The cureent is mirrored because Vbe is forced to be the same. With emitter resistors, that is no longer true.

Bob
I meant without emitter resistors
 
Top