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Clean power

I came across a reference to Cleqan Power supply on installation guide that refers to the FAQ but cannot find anything on the FAQ page on the subject. Any ideas?

Thanks

Ananda

5 comments

5 Comments

Admin

Mar 10

Yes. That is correct!

Once you install the module, the motor will get the PWM signal from the module. The PWM power supply can be used provided it is set to full but then at full it should not exceed 24V.
There is indeed a bridge rectifier onboard which makes it polarity agnostic. The polarities are shown to make it easier to understand and comply with NMRA color coding standards where red indicates + power from the right rail even though it doesn't really matter for LocoFi.

adesilva_1999

Mar 10

Replying to

Great, that clarifies the questions I had. Thanks

Ananda

Admin

Mar 11

Replying to

You're very welcome! Great to hear that helped. In case of further questions, please feel free to contact us via e-mail, by replying here or starting a new thread.

Admin

Mar 09

Hello Ananda,

Please refer to FAQ -> Troubleshooting -> 02 that talks about the "clean" power supply. "Clean" power is basically a constant voltage just like what a battery would provide. Older "DC" power supplies put out what is called "rectified AC" which is varying between 0V and a maximum voltage (that exceeds the VDC rating mentioned on the power supply by almost 1.56 times) very fast several times in a second. Please watch the video mentioned in the FAQ to see how it appears on an oscilloscope and how you can "filter" it.

Note: LocoFi is rated for a maximum of 24V that translates to around 15.4 VDC output from a "pulsed", "unclean" or "rectified AC" power supply. Please make sure to not set the throttle too high or the module will get damaged.

Also, if running along with "DC only" trains, it helps to have LocoFi on the block with an exclusive "clean" power supply that can be switched using a DPDT or use a "filter" to power the layout. You existing "DC only" engines will run fine on "filtered" DC.

If you would rather not bother will older power supplies (which are also notorious for voltage spikes that can damage the module), you can get any of the laptop type of power supplies or wall warts e.g. https://www.amazon.com/dp/B07GFFG1BQ. The latter is not a recommendation but an example.

Hope that helps. Please feel free to get back in case of any further questions.

Best regards,

LocoFi Team

adesilva_1999

Mar 10

Replying to

Thanks for the reply. At present, I control the speed with something like this:

https://www.ebay.com/itm/196814093368?_skw=12+volt+speed+controller&itmmeta=01JNYW07QNWJFDY0ZP6VM8GNWV&hash=item2dd308bc38:g:rwIAAOSwaa5ngNOa&itmprp=enc%3AAQAKAAAA8FkggFvd1GGDu0w3yXCmi1esFri%2BkR510cFhWFFkBPGL5w35h6CIgR1Tho9a0u3EQi%2BewjwSODqRAWuOQu7AyPxSED0rkVAhAtOsNLNpeREh4%2B5vNdVON3LkCvwuq0kntMWkAtOGPIqm9a5bEKcmPm7HjaNFwcsxE3g5T8QPFkNZ9FUhs4Y5HZvVD%2BuwUI9pie4vapNeLin1seWCHYuOWscOlpiSk2MBMKqvXKKt%2B8OPM2eBmHcpiwjSKap8p1UB9c%2FtM5209LlmiM5t%2Bv4e%2BGmyAvQtSpkhMu%2Forx5YbT%2B%2FmY6xtgoHJanSC4KqnXPmtQ%3D%3D|tkp%3ABk9SR4b8gNyvZQ

I guess I have to eliminate it from the picture and feed the full 12 volt DC to the tracks? Also, the Locofi unit has input power marked + and - which makes me wonder what would happen if the loco is turned around on the track which makes the polarity reverse. Will there be any problem or does the power go through a bridge so that it makes no difference to the Locofi?

Thanks

Ananda

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