Need advice on a circuit that connects two parallel resistance as a varying load

Good afternoon,

I have a circuit (attached). circuit have a controlled current source that received a input asa current . this controlled current souce connected to a resistance. now i want to add another resistance in parallel but want to use some switch or something that turn on after some time. I tray to connect many things but not working. purpose to get varying load

powergui is in dicrete.

your answer is appreciated.

Answer 1

[Andres Adam]

It looks like you just need to add a switch to the branch of the new resistance:

https://www.mathworks.com/help/sps/powersys/ref/idealswitch.html

The port g of the resistance is the control. Connect it to a Step block or some control logic to activate the second branch whenever you want.

https://www.mathworks.com/help/simulink/slref/step.html