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I am looking to convert my Lionel Fastrack switches from track power to a separate transformer. I know this means I remove the jumper strip on the bottom of the switch, then connect one of the wires to a separate auxilary transformer set at about 14 volts. Since I will be running the wires to my AIU location, I will connect the power wire for each switch to a terminal strip near the AIU, then power the terminal strip from my auxillary transformer.

 

I have two questions about doing this:

Q1)  Can I use the auxillary transformer used for all my accessories and track signals, as the switches are only a mementary load, and generally only activated one at a time (possibly 2 or 3 at a time when connected for a route). Or should I have a separate transformer to power all my switches, isolated from my accessory transformer. My auxillary transformer is a Lionel 1033. I power my track signals through the main leads, set at 14V, and the accessories through the aux leads, which operate at a lower voltage. I don't want to mess up my signal operation by overloading anything. Would I connect the switches to the main leads at 14V or the auxillary leads at the lower voltage?

Q2) will this affect the DCS blocks, that currently run through my switches. I currently have many track connection that may go through connect to a track that then has 1 or 2 switches, powering a few sidings in the same block. In general, I am trying to determine if separating the switches from track power will increase the number of DCS blocks that I need to run my layout.

 

Thanks for any help or ideas: Joe K

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Joe,

What problems will powering the switches with the 1033 cause to the derailing feature of the switches?

None, provided that the transformers are all in phase (you say that they are) and that a common terminal of the 1033 is connected to a Common terminal of each of the bricks.

 

This and a whole lot more is all in "The DCS O Gauge Companion 2nd Edition", now available for purchase as an eBook or a printed book from MTH's web store site! Click on the link below to go to MTH's web page for the book!

 
 
Originally Posted by Barry Broskowitz:

Joe,

 

Once you have all of the transformers in phase with respect to each another, connect one Common terminal of each transformer to a Common terminal of each of the other transformers.

How do you go about getting transformers in phase  without connecting the commons first?

Easiest way to phase transformers is to disconnect all hot outputs, connect the commons, turn on each transformer and set an output of each to identical voltage.  Place a voltmeter between the two hots.   If you get a reading close to zero, they're phased; if twice the voltage settings, they're out of phase.  If you don;t have a voltmeter, use an 18-volt bulb--bright is out-of-hase, & dim or out is in pahse.  If out of phase, reverse one 120-volt plug in the wall receptacle.

 

Then go ahread and reconnect outputs

 

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