Comments on: Power Supply for Atlas Snap Relays and Turnouts https://blog.model-train-help.com/2020/12/power-supply-atlas-snap-relays-turnouts.html?utm_source=rss&utm_medium=rss&utm_campaign=power-supply-atlas-snap-relays-turnouts Model railroads and model trains Mon, 21 Dec 2020 19:30:28 +0000 hourly 1 https://wordpress.org/?v=6.9.4 By: Jim https://blog.model-train-help.com/2020/12/power-supply-atlas-snap-relays-turnouts.html#comment-42818 Mon, 21 Dec 2020 19:30:28 +0000 http://blog.model-train-help.com/?p=5892#comment-42818 In reply to Ralph.

Thx Steve and Ralph. ( Now I have more homework to do).

]]> By: Ralph https://blog.model-train-help.com/2020/12/power-supply-atlas-snap-relays-turnouts.html#comment-42747 Wed, 16 Dec 2020 17:06:08 +0000 http://blog.model-train-help.com/?p=5892#comment-42747 Hi Jim:

Just read your inquire about separate power supplies. I took a old computer power supply from a Dell computer and bundled together the colored wires. This gave me the voltage needed for signaling and lights. I have listed below the combinations used. Doesn’t matter if you combine three reds together, you still only get 5v. Hope this helps you or anyone else.

Green & Black turns on P/C
Black = Ground
Red = 5 V
Yellow = 12 V
Orange = 3.3 V
Blue = -12 V
Red & Blue = 17 V
Blue & Yellow = 14 V

Ralph

]]> By: Steve Hubbard https://blog.model-train-help.com/2020/12/power-supply-atlas-snap-relays-turnouts.html#comment-42714 Wed, 16 Dec 2020 01:58:07 +0000 http://blog.model-train-help.com/?p=5892#comment-42714 Solenoid type switch machines like atlas require a substantial inrush current particularly when your actuating 2 or more at the same time. . It is best to use a capacitance discharge power supply. They can be purchased and/or built. there is plenty of internet information on them.

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