I have been trying to do my homework converting Vac to Vdc. I purchased a AC/DC LM2596 step down power supply w/pot and led voltage output reader. It also has mounted a RS807 bridge rectifier.
What I envision is to supply ac from my z1000 and output ~ 3 to 5 Vdc for track accessories. Can I now connect my z1000 to the input and read my Vdc out? I just wannta be sure. Tks
Tommy
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That's how it should work, AC in and DC out.
Recommended over current protection????
Hi Mike
Stay with me. What the heck is over current protection?
Tommy
Mike, most of those supplies have intrinsic over current protection.
Hi Mike
Stay with me. What the heck is over current protection?
Tommy
The Z1000 is a 100 watt transformer, from my limited research.
(1.) Working backwards if you wanted 3 to 5 volts DC out of your power supply, most likely the Z1000 is set at or near 3 to 5 volts AC
(2.) 5 volts AC from the Z1000 would correspond to about 20 amps if the 100 watt rating is correct. Approximate: Watts = volts X amps.
(3.) Does your AC/DC LM2596 step down power supply protect against the possibility of a 20 amp in rush from the Z1000. or is there a fuse/circuit breaker to be supplied.
A little help here John. (....intrinsic over current protection)
Thank you
Thanks John and Mike, I lov this.
Let me clarify a little bit, please. My plan is to come off the z1000 output either 18vac or 14vac into my input of my AC/DC LM2596. Then I want my output of my LM2596 to connect to low voltage track accessories. Mike, Don't know about the 20amp rush from the z1000. I had planned to use this xformer for Tiu power and low voltage dc for accessories. You guys stay in touch
Tommy
John, do these boards use a full-wave rectifier that means the input and output "grounds" are not the same and can't be tied together? If so, any trackside accessories must not connect to the track.
Dale is 100% correct, many of the AC-DC boards do use a bridge and are non-isolated. That being the case, the secondary must NOT have a common connection to any of the input power supply rails. FWIW, my little passenger car lighting board has the same restriction, though that's not a big deal for a strip of LED's.
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