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RailPro Specific Help & Discussion / Re: Ring MIA at Springfield
« Last post by mcbunton on February 15, 2024, 04:03:18 PM »Would have thought Don Sweet would be there as a dealer? He's from NH and supports that show I believe.
Recent Posts
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RailPro Specific Help & Discussion / AM-1B update
« Last post by Jim Agnew on February 15, 2024, 01:53:21 PM »After updating to Rev 1.20, I’m getting a “Loop Time Warning” and can no longer activate switches. Help!
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RailPro Specific Help & Discussion / looking for trolly sounds
« Last post by jgreene2010 on February 14, 2024, 12:35:43 PM »Does anyone have sounds that would work for a Pacific Electric streetcar? Thanks!
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RailPro Specific Help & Discussion / Re: Lm-3s ho
« Last post by Dodgezilla04 on February 10, 2024, 07:36:12 AM »Thank you. I'll just get the lm4sg, I know it'll supply enough current
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RailPro Specific Help & Discussion / Re: Lm-3s ho
« Last post by G8B4Life on February 09, 2024, 10:50:52 PM »If the motor in the railtruck can draw more current than an LM-3S can provide (for example, 4 Amps), then you couldn't use an LM-3S to drive the motor directly. What can be done (in theory) is to use the LM-3 to drive a transistor designed for delivering a lot of power, or a pair of them in a configuration called a darlington pair and the transistor(s) then provides the power to the motor, easily supplying more than the LM-3 can deliver on it's own. Something very similar is already happening inside the LM, there is no way the microcontroller inside the LM can deliver 1A by itself.
Unfortunately I don't have a good drawing to post to explain it, nor do I have an explanation of how to handle forward and reverse. Our resident electronics guru would have been able to but sadly Alan has not been here for quite a long time for some reason.
- Tim
Unfortunately I don't have a good drawing to post to explain it, nor do I have an explanation of how to handle forward and reverse. Our resident electronics guru would have been able to but sadly Alan has not been here for quite a long time for some reason.
- Tim
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RailPro Specific Help & Discussion / Re: Lm-3s ho
« Last post by Dodgezilla04 on February 09, 2024, 07:36:08 PM »It has no way of coupling to another loco or cars. I don't understand why I'd want to drive a lower transistor instead of the motor
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RailPro Specific Help & Discussion / Re: Lm-3s ho
« Last post by G8B4Life on February 09, 2024, 07:30:47 PM »It should be the same as the LM-2 series of modules, 2 amp stall, 1 amp continuous.
If your railtruck will never MU (load share ) with another module you should also be able to use the LM-3S to drive a power transistor instead of driving the motor directly (same theory as how transistor throttles could pass high current without passing it through the potentiometer itself). Idea not tested of course.
- Tim
If your railtruck will never MU (load share ) with another module you should also be able to use the LM-3S to drive a power transistor instead of driving the motor directly (same theory as how transistor throttles could pass high current without passing it through the potentiometer itself). Idea not tested of course.
- Tim
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RailPro Specific Help & Discussion / Lm-3s ho
« Last post by Dodgezilla04 on February 09, 2024, 06:19:12 PM »Can anyone tell me the current rating of this module? Wanting to use it for my delton g scale rail truck since it's a small loco with one motor. I cannot find the ho info, only the g modules.
Thank you
Thank you
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General Discussion / website for loco airhorns
« Last post by Josephbw on February 09, 2024, 09:57:04 AM »Locomotive Airhorn Usage
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General Discussion / Horn websites
« Last post by Josephbw on February 09, 2024, 09:05:17 AM »Is there a website that tells what engines use what horns for specific road names?
Joe
Joe