Thanks audioguru, I've added a capacitor (10000uF, 63V) in parallel with flyback, C7 no longer explodes (and even does not warms up). 8)
Hi all! Can anyone help me? I've built this power supply. All worked fine. But when I try to load it (15-20 V, 1.5-2 A), C7 explodes. The load itself is a flyback (its primary winding, 5 turns of 1mm wire), which is driven by a power MOSFET. Could this be because of self-induction impulses?