I have a PWM load which draws its current from a regulated DC supply. The supply and load will be separated by some distance, and I'm worried that the rapid changes in current through the current carrying wire between the supply and load will create excessive EMI.
The first idea was to have this:
But the problem is on start-up the current drawn through R2 and C1 would be too great. Ideally the peak current drawn from the power supply would never be greater than 3A.
I'm looking for a simple circuit that just uses no more active components than a couple of BJTs to reduce rapid current changes and the initial current surge, while ideally not reducing the voltage to the load by more than about 2V. Any advice would be very helpful.