Quoted from emsrph:
Does a switching power supply work with solenoids? Also, this is DC and not the AC that the transformer puts out so would need to bring this 48vdc down to 43vdc but not with the rectifier board?
Yes, as with most modern games. Works solenoids.
The transformer steps AC voltages, which are rectified by the rectifier board. Yes AC comes out of the transformer, but the "Rectifier" creates DC voltage (direct current) from the AC of the transformer. The coils are powered by about 48vdc in my standard Seawitch, and I tested them dropping about 2-3vdc when flipping (4 flippers). I guess maybe a B=3 just drops off a bit more than that. The 48vdc switching power supply renders the 43-48vdc coming from the rectifier board, redundant. Replacing with a strong consistent supply.
You could use the 16-B-3 for 12vdc, 5vdc, 6Vac, but replace the rectifier output of 48vdc with the SMPS 48vdc thus providing solid coil power and leaving the transformer to provide everything else except the coil power.
You could also ditch the transformer all together if you wanted and use a PC ATX power supply along with the 48vdc SMPS. They have good 12vdc and 5vdc. GI can be run on 5vdc, instead of the raw unrectified 6Vac.
"43vdc" scribbled in everywhere in scats, edited?. I think it might have been meant to be 48vdc, but with the weak transformer, covering the sag by lowering the "tolerance". Bingo! now saggy weak transformer is "within spec" and not in need of replacment. Nominal. The B-6 would have less voltage drop (from 48v) than the B-3. Less voltage means less power. Hmmm mine reads 48vdc for coils here anyhow. Input is 240Vac @50hz.
The SMPS is adjustable anyhow, so you can turn it down to 43vdc if you really want. If it does not get overloaded you won't get big voltage drops anymore, anyway. You'd be setting it to 48vdc for the punchy effect you're looking for, I think.
What about the 16-B-8 ... what arcades are they from?