DC - Electrical

We need a switch machine with more contacts

Our club has been using Tortoise switch machines on a HO scale yard. There are 2 pair (3 tracks) of Tortoises that switch the electricity between seperate power packs. We have been using the 2 internal sets of Tortoise contacts to switch the positive rail and to energize the frog. The negative rails have been wired in common. We now want to seperate the common rails with another set of contacts to be able to switch the negative rails between the power packs.

Same Bus for Tortoise & Lights?

Hi all,

I just finished wiring (sucessfully) the DCC bus/feeders on my new layout. My next step is to do the wiring for tortoises / control panel leds - signals / layout structure-roads lighting.

I am wondering if i am ok in using the same power supply (2-3A, 12V DC) and the same bus wire, for the tortoises AND the layout's led lights (for structures, street lights etc using resistors of course).

I am wondering if a separate power supply (3V) and a separate bus would make any difference here.

Transformer feature identification

This question will reveil my  reentry into the Modeling Hobby. After many, many years away, I am busting

at the seams to get rollin again.

My main concern now ,out of many to follow, is the basic DC transformer to restart . Here is the part about ( many years)

 My old collection is run by an MRC Throttle Pack Model 3 made some time in the 1970s.

I'm reading about DCC, but will not jump in that for awhile. What I do need is a throttle pack that provides

BNML2's picture

Arduinos and the ProtoThrottle: Updating the electronics in a 2.5" scale loco

This blog will document my ongoing efforts to update the electronics in my 2.5" scale locomotive.

Layout Sound for DC only no on-board sound cards

Building my first HO layout (4x8 table top, 2 mainlines). Some of my equipment is pre 1950 Steam loco built by my Dad. No way I am taking those apart to try to add sound cards. My newer stuff none is DCC ready, hence my 7 block DC layout w/ 2 CABs.

Fail-safe a drop leaf

We have a drop-leaf wye that connects to a staging yard and also acts as a wye in a modeled location that had a wye. The leaf spans an aisle, and is actually usually in the 'stowed' position. Previously, there were two ground thrown switches that led to the wye, and it was fairly obvious when things were dangerous. However, recently the area was re-worked, and it turned out to be easy for the swiss cheese holes to line up. I saved a brass locomotive from hitting the floor... but only barely.

Hiding Altas switch machines in the scenery?

I'm not sure what topic category this belongs in, so I am going to post it in a couple. 

Does anyone know of a good way to hide Atlas switch machines on a layout?  I've read about several approaches, including hiding in the scenery or mounting under the benchwork.

Do you know of any good ways to hide them in the scenery?  Any techniques that have worked for you, or that you know have worked for others?

BR GP30 2300's picture

DCC Test Track Wiring Question.

I have a question for those with more DCC and electrical/electronic experience then I have.

 

I have a NCE powercab that I would like to connect to my program track on my modelbench.

 

Also I have the NCE USB interface I would like to use so that I can download and use JMRI for programming.

 

And also I would like to set up the Soundtraxx PTB-100 .

 

What’s on your workbench?

I’m starting to think about home.  What is on my workbench?   Cleaned up before leaving....   Gotta rely on your pictures and thoughts!!!

Let’s go!!!  Have a good!!!


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