Quote:
Originally Posted by kalee20
Indoor fireworks are really for the off-line supplies. You won't see much with 24V.
I worked with a colleague who didn't bother with fuses for his prototypes. Fireworks were the order of the day when he worked on developing a 600W off-line switcher. A quick-blow low-rated fuse in series with the supply line to the switching stage won't save the devices, but it will prevent the rest of the circuit from turning into a charred mass with the flames leaping from exploding MOSFETS (as MrBungle says). You get an idea how much grunt is behind the mains, even with a standard 13A fuse in line!
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In the late '80s I worked for a manufacturer of temperature control systems, most of these systems featured in-house designed universal SMPSUs. The power supply design engineer's work bench was situated next to a window for good reason; often one of his creations became a little warm or caught fire and he would toss it out of the open window
On several occasions I walked along the path outside this window to see something smouldering in the flower bed.
John