Does anyone know how to adapt a 24v Mark Vll to 12v? I'm guessing it might work on 12v but with a proportionate output loss.
Any help would be appreciated.
Any help would be appreciated.
24V Mark Vll
- Thread starter 62Frank
- Start date
JohnMarcson
Administrator
This step converter provides surprisingly "clean" power for a decent price. They have other amp ratings too for not much more money. They are good enough to run electronics so I'd trust them with a siren. You can always test them first, but some of the other brands were all over the place with voltage spikes under load.
Sparky_911
Supporting Donor
I have several of the ones @JohnMarcson mentioned above (from Amazon). I use them in up and down voltage applications (24v military equipment, 36v golf carts, etc.) and have had no issues with running any under load. 
Watch the grounds though, they're meant to be separate isolated circuits DONOT ground both sides all together with everything.
Watch the grounds though, they're meant to be separate isolated circuits DONOT ground both sides all together with everything.
JohnMarcson
Administrator
Great point about the grounds. Treat this stem as its own closed loop. Just start thinking of the unit as part of the device (siren). Everything goes to or from the converter instead of to or from the siren or 12v power.