When I first got into solid state pinball’s I used a computer power supply to test MPU boards. I soon found the PC power supply’s were not reliable. That’s not good for testing equipment. I found an old 12 volt regulated power supply I built years ago. I connected it to a solenoid driver board for the 5 volt supply. It worked good but was a bit awkward to use.
Then I duplicated the 5 volt section of the driver board and added it to the 12 volt supply. This worked very well.
Then I built a 24 volt DC unregulated supply to get the zero crossing for the seventh flash.
Last winter I decided to build a new power supply with 12, 5, and 24 volt. I’m not that good at electronics but with the help from several Pinside members we built the ultimate pinball power supply. Here’s a link to the build:
That was such an interesting build that I decided to build an adjustable power supply.
Besides a great learning process I got two really neat power supplies.