Nobody like VI limiter in audio amplifier and possible distortion, but overcurrent can demage output. In PA short circuit on output for long time can damage amplifier with VI limiter also. This PSU have short circuit protect, and can help with experimenting amplifier. Schematics for short circuit protect can be implement in any DC protection. 



Originally Posted by maouna  
my transformer is 24-0-24 volts ac , 200VA .would you mind telling me the component values i have to change in order for your circuit to work properly?
1 Replace 1,5k/5w with 330R/2W for relay
2 Replace 0,1R/5W with 0,22R/5W for short-circuit detect
3 Replace 220k with 47k for DC detect
Rest will work with 35V DC, 6k8/1W for LED can be replaced with 3k9, but not necessary. 

Clip indicator circuit indicate when amplifier output is about 6V to rail. Some amplifier can not give that high output,(mosfet output with same VAS rail voltage for exemplar) in this case 2k2 can be replaced with 1k5, clip indicate when output is about 9V to rail.

Short circuit protect will be activate in case shorting output terminals even when amplifier operate with few wats, no need 6A to activate at first.


http://www.diyaudio.com/forums/solid-state/164093-100w-ultimate-fidelity-amplifier-8.html

http://www.diyaudio.com/forums/solid-state/164093-100w-ultimate-fidelity-amplifier-10.html
If you use one pair outputs 0,1R/5W replace with 0,22R/5W.