Everything on model trains, model railroads, model railways, locomotives, model train layouts, scenery, wiring, DCC and more. Enjoy the world's best hobby... model railroading!

  

Question About 16V AC or DC Power Supply

George who is new to model railroading has this question:

“I am very new to the model train world and I’m hoping you can help me out. I recently purchased the HO Bachmann Echo Valley Express with Digital Sound (HO Scale). I now purchased 22 radius track to add a second oval. I also purchased a left and right #6 Remote Crossover Turnout. There is a note on the instructions for it that says: All analog turnouts (non-DCC) require 16V AC or DC accessory power supply for operation. Where do I buy this additional power source? Do I need more than one? And how do I set them all up? Any help would be very appreciative. Thanks!”

Submit your question to the Blog Moderator using the ADD A QUESTION link underneath this posting.

View the comments and answers using the COMMENTS link.

5 Responses to Question About 16V AC or DC Power Supply

  • Robertsays:

    Most power packs have 12-15V DC as well as a 12-16Volt AC outlet to power point motors etc.

  • David Stokessays:

    I think that this is a nod to a problem with electrical shorting across the frog and points in a “switch” and is suggesting that the “frog” be isolated and to get its own power supply. Do you need a special piece of equipment – yes and no. I have heard of a product called the Juicer which helps do this, and DCC Concepts also has frog polarity changing/powering gizmos. But if you purchase Peco Electrofrog points and wire them in the recommended manner, no other equipment is necessary. DCC is very picky when it comes to detecting electrical shorts, where as DC or Analogue doesn’t seem quite so quick to shut down.

  • Craig Inghamsays:

    Typical ‘boxed’ set power supplies are higher than 12 volts. The issue of concern is what happens as you load the power supply. Typically, the supply will have a voltage drop if the load exceeds the current limit. Something to remember is the basic formula E (voltage) = I (current) times (resistance or load). Typical power supplies are current limited. As you ‘load’ the sstem, it reduces the output. This result is not linear.

    I always suggest a seperate power supply for features such as turnouts (swiches). They will yypically perform well and not be influenced by how many engines or lighted cars are running. If one is intending on a major layout with many trains operating, I suggest looking at constant voltage power supplies.

    Consider a typical 4 x 8 layout. Use a dual output power supply. One output for track power and the other for amenities.

  • Don Jenningssays:

    George HI It is best if you have a power supply for train running and a power supply for accessories. The reason I mention this is because if only one power supply the train will jerk when the accessory is operated. That does not look great when it happens and you are running a train. The second power supply can and should be used for lighted track signals or interior building lights or control panel lighting.
    I hope this answers your question. Good luck and MODEL RAILROADING IS FUN
    Don

  • Frank Bsays:

    The motor (solenoid) that operates turnouts requires a slightly large pulse of current to operate it.

    Therefore another power unit is needed (if the supplied controller/transformer does not have an accessory output). One power unit will be adequate for all your turnouts. This is a standard accessory you can get from a model shop. (Or get a combined power / control unit with both track and accessory outputs.)

Leave a Reply

Your email address will not be published. Required fields are marked *

Add a photo or image related to your comment (JPEG only)

Download Your Free Catalog



















N Scale Track Plans

Watch Video

SUBMIT YOUR QUESTION

Submit Your Model Railroading Questions!

Before you submit your model railroading question please add some feedback, answers or comments to other postings on this model train blog. What goes around comes around... so if you can help others in the hobby, someone else may help you.

Important - Please add plenty of supporting details to any question you submit (eg. scale, solutions you have already tried etc.) , as the clearest and best questions usually get the best answers. Also, please check your spelling and punctuation as all questions need to be approved by the blog moderator prior to publication. Approved questions are normally published within a week (if not sooner).

Submit your model train questions here.

Use Tiny Railroad Micro Controllers



A micro controller is basically a small programmable computer device to help the model railroader “make things operate.” It is clever way to realistically replicate the movements, actions and functions you are likely to see on a full size railroad.

Watch These Club Videos

Club members access helpful new resources each month: diagrams, video tutorials, articles, track plans and more. Watch the tour videos here.

Scenery Techniques Explained

Everything DCC

NEW TO MODEL TRAINS?

HO TRACK PLANS

Model Train Help Ebook

Bringing Your Railroad To Life!

Scenery & Layout Ideas

Share With Friends

 

Submit Your Article

Would you like to write an article and have it published?

Preference will be given to articles that help others progress in the hobby, maybe suggesting an idea for their layout, a quick tip or two... or perhaps a little bit of good advice based on your model railroading experiences.

We are all in this hobby together, so the more we can do to share ideas and help each other, the better.

Submit Your Article Here

It’s YOUR Railroad!

Your rolling stock and locomotives might actually be the center of attention on your layout, but the scenic features that surround and envelop your layout is what's likely to make your train setup stand proud of the rest. Your selection of scenery and structures will add an element of customization that will make your railroad truly unique.



Scenery, structures, and fine detailing is a fundamental aspect of any good model railroad, particularly if it is intended to replicate a true-to-life railroading scene. How realistic or authentic you make your railroad is entirely up to you... and you alone.

Some enthusiasts like to replicate every tiny detail so as to accurately depict, in every aspect, a miniaturized version of a real life scene.

Others in this hobby adopt a more "free-style" approach and choose to mix and match accessories and features they personally prefer. Even though the purist will possibly be unimpressed with unrealistic or out of context elements, it is YOUR railroad layout so you can make it anything you personally want!

Model Railroading Blog Archive

Reader Poll

Sorry, there are no polls available at the moment.