Hello
here are two different circuit that the current creator section are the same.if there is no problem could you tell me the role of transistor in current source?
i think the transistor is used to enable the load to be connected to the -ve rail. and thus can obtain more current output
the circuit works to keep the voltage at the base constant
in that case; as Ic = Ib+IE,
the divider sets the reference to compare against, and the other resistor is the current monitor resistor.
i think the transistor is used to enable the load to be connected to the -ve rail. and thus can obtain more current output
dear THINKER_KAM_MAN as you check the output current it is related to R3 resistor and minimum op-amp input bias
and dear ark_Force I didn't know what is more important in resistor relationship ratio? could you tell me more?