is there anyway to achieve a linear output current up to 2.0 amp without changing the voltage of the power supply?
greatly appreciate and Welcome to suggestions . Thanks.

Darlinton pair configure does help some but not good enough..( not stable)

a simplifier circuit & simulation output.. see attach.doc

 

Hi,

I = E/R suggests that you control current with resistance or with voltage. Assuming your load is not too variable, a transistor pass element should be able to do the current control. Remember that the current will cause a voltage drop in the load, so the source voltage has to be large enough that it can still push two amps through the load. A 100 ohm load will have 200 volts across it while passing 2 amps.

 

agree 100%

my system fixed on a +15v & -15v power supply can't change system v supply
R-load ( 10 ohm) fixed .
what else can i do to get 2.0 Amp?

 

How many amps can the supply provide now?

agree 100%

my system fixed on a +15v & -15v power supply can't change system v supply
R-load ( 10 ohm) fixed .
what else can i do to get 2.0 Amp?

 

System Specification of ±15.0v can supply up to ± 25.0 Amp.