Hehe, yes thats probably the case. ;D Well, I will go with three of them. Nothing negative with that isnt it? I thought about protections. If I am charging an led-acid battery with this PSU, do I need diodes on the outputs to ensure the PSU isnt going to break if switched of with battery connected or something like that? What about diodes on both positive and negative output for protection against wrong polarity from battery? Will that affect the rest of the circuit?