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 Robotics / RCX / *7630 (-10)
  Re: DCC for the RCX
 
(...) I forget if I already replied with how nifty this is. I spotlighted it, I put in a news article at ILTCO (we're having some domain problems right now, a temporary url is iltco.northcomp.com) and I added it to the .trains header That ought to (...) (21 years ago, 30-May-03, to lugnet.robotics.rcx, lugnet.trains)
 
  Re: DCC for the RCX
 
(...) Hi Dave, no you wouldnt need any resistors or diodes. Esger (21 years ago, 30-May-03, to lugnet.robotics.rcx, lugnet.trains)
 
  Re: DCC for the RCX
 
(...) Sorry, my earlier post should have been more clear. I was just commenting on the fact that in general a resistor is _not_ a good way to reduce voltage to a train motor. And you recalled correctly: diode's are "one-way". Thats why you need to (...) (21 years ago, 29-May-03, to lugnet.robotics.rcx, lugnet.trains)
 
  Re: DCC for the RCX
 
(...) The problem with inductive load is that when current is interrupted, they generate large voltage spikes with reverse polarity. The diode absorbs these spikes and avoids destroying the driver... Philo (21 years ago, 29-May-03, to lugnet.robotics.rcx, lugnet.trains)
 
  Re: DCC for the RCX
 
(...) I'm no electronics engineer by any stretch-- A diode, iirc, allows DC current to 'flow thru' in only one direction. What would a diode do across the output on the top of the train motor? And why would one be good for 'inductive' loads such as (...) (21 years ago, 29-May-03, to lugnet.robotics.rcx, lugnet.trains)
 
  Re: DCC for the RCX
 
(...) I don't install them either, and I have done something like 30 motors so far. (...) True, but ONLY if you are just going to use the RCX as a output. You can dial the voltage that DB100's (and most other Digitrax) boosters put out to a exact (...) (21 years ago, 29-May-03, to lugnet.robotics.rcx, lugnet.trains)
 
  Re: need help for MLCAD:"add new piece to library"
 
(...) Chris, I thought that pneumatics parts had made it into the official parts release. When was the last time you updated your parts? I've been known to use parts from here: (URL) I prefer the parts made by JP Brown. You can get them off my (...) (21 years ago, 29-May-03, to lugnet.robotics.rcx)
 
  Re: DCC for the RCX
 
(...) output? Dave, I used a 1N4002. It's a fairly common 1 amp switching diode. Here's a picture from my latest decoder install: (URL) that the banded end of the diode gets the blue lead from the decoder. The unbanded end gets the white lead. If (...) (21 years ago, 28-May-03, to lugnet.robotics.rcx, lugnet.trains)
 
  Re: DCC for the RCX
 
In lugnet.robotics.rcx, Mark Riley wrote: <snip> (...) Mucho appreciated Mark. The Diode--any diode will do? and just solder it across the connector output? Take care, Dave (21 years ago, 28-May-03, to lugnet.robotics.rcx, lugnet.trains)
 
  Re: DCC for the RCX
 
(...) I (...) resistors (...) goes (...) run (...) the (...) isn't (...) reduce the (...) David, When I installed my first decoders (Digitrax DN121), I omitted the capacitors, figuring if the buzzing was annoying, I could always add them later. As (...) (21 years ago, 28-May-03, to lugnet.robotics.rcx, lugnet.trains)


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