CDU

[Brian]

I have seen this one is use- very effective but not cheap
https://www.dccconcepts.com/product/pow ... igh-power/

IMO vastly over priced.

[Ron S]

Agree Brian I fell over when my mate showed me it & told me the price- knowing a bit about CDU's I could have made one a lot cheaper but not as flash looking. This one has two outputs of 22v each and can be in series for when one wants to throw 4-5 solenoids at the dame time when using a diode matrix.
In fact, the layout it is on, it uses one output for just one coil, the combined for 4-5.

[RAF96]

Compare 2 x CDUs plus a power supply and the price isn’t that expensive, just looks high at first glance.
Looking at the manual for it, I can see some folk getting in a right old muddle with 2X CDUs sharing 3 terminals (the middle one being positive for one side and negative for the other side) and powering solenoids using only 2 wires and diodes as well as running indicator leds from the same wires.