Does have Exxos PSU some dangerous design aspects?

[exxos]

I have updated the info page to install a inline fuse if there isn't a fused plug. You can fit one regardless if you wish anyway.

But thing is about centurion tech, his PSU is dangerous and a fire risk anyway. It's pretty horrific. His fuse doesn't even have a plastic cover, so a user can get electrocuted. He has exposed live screws for the power connections. Those screw blocks break very easily as the screws tend to shred. Then you have a bad connection which leads to sparking and then you are well on your way to having a fire. I hope he has mains insulation slots in the pcb as dust build up or moisture can cause arcing and again lead to a fire.Just endless rookie mistakes IMO. Dave Jones IIRC did a video on such things.

I'm not a fan of high voltage switch modes. Cheap out on parts (no fuse cover which is like 10p) and things like capacitors, then you end up with things like this..https://www.exxosforum.co.uk/forum/viewt ... ?f=9&t=377 similar when people have sold PSU recap kits where they have exploded as they are not rated for switch mode use. I have always been open and honest what caps I use and recommend. I use quality parts and don't cheap out.

Having worked for a large company who I serviced and repaired thousands of PSUs from various manufactures, high voltage switch modes were always the largest failure. Often mains spikes or overheating of the mains switcher transistor would fail. Even fused they can explode leading to a fire risk. Mains suppression doesn't always "cut it" and only advanced filtering circuits and techniques can generally survive.

There was only 1 PSU which never failed. It had a transformer on the primary side stepping down to a much safer low voltage. No nasty lethal 350volts DC switching going on, just safer and more reliable low voltage operation. So I brought on board that knowledge and experience and designed my PSU around the same topology. 20volts is about the highest voltage on my PSU. I also reviewed and tested many modern swithmode chips where that work is published. So I have a safe low voltage backend coupled with one of the latest switchmode technologies from Texas instruments. Again I use quality branded parts made T.I., epcos, panasonic etc I don't cheap out to save a buck. I actually did away with most of the electrolytics anyway. Each to their own I guess.

[Cosmic Puppet]

I've had 2 Atari STs in my lifetime, both with original internal power supplies. Both of them ran so hot that you could smell the plastic case above. Nobody thought these were unsafe. :lol:

[terriblefire]

Pavel just wants to sell his own PSUs. He's pretty clueless about electronics. He thinks screwing around with matched trace path lengths on a tuned bus will make it more stable. :crazy: