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WIMorrison

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    http://www.wimorrison.co.uk

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    : nr Alton, Hants

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  1. Paul The are Common Anode Iain
  2. I have some bi-colour LEDs that I want to use for directional lighting in some old locos which are using MX617N decoders. I think that I can use the white and yellow outputs of the decoder to the cathode (white at one end and red at the other) with the return through the black wire for half wave lighting, but that suggests to me that the red and white would both be on at the same time at each end because the polarity of the output from the decoder is constant - clearly this is not acceptable What I really want to do is have the white and red on (directional) when the loco is running free (and like this always in a single carriage railcar) but I want to be able to switch off the red tail llght when the loco is in a train. I have fried my brain tonight trying to work it out and and happy to admit defeat - here hoping that someone here has the circuit to hand and can post it here for me Thanks
  3. I would go with DR4018 for the solenoid motors and Dr4024 for the servo motors - both relatively cheap. The computer operation (not programming) is actually irrelevant as the computer will talk to your command station and the command station wi issue and accessory command to switch the motors - that is why I wondered if you meant programming, which you don't
  4. What sort of motor? servo, solenoid, stall - all different and what do you mean program from computer? all affect the choice of decoder
  5. second is better, especially if LEDs are different colours as you will be able to change the values to get the same brightness
  6. They have been hinting at this for quite a while - great pity that they have made it a fixed item, screwed to the facia plate, as whilst this will tell you the output of the Command station that isnt a lot of use when you wnt to know if there is a voltage drop around the layout. Brilliants idea, just not quite what is required. EDIT - price is also steep at around the same or more as RRampmeter, which is far from cheap (and you can get RRAmpMeter which is portable for less!)
  7. In your scenario there is heat - lots of it in the bulbs and this is where the work is being done converting the electrical energy into a little bit of light and a large amount of heat - put you hand on the bulb if you don't believe me Now put your hand on the connector, it should be cold - if it isn't then there is a resistance in the connector and some work is being done as the energy is converted to heat. the formula is simple; I*I*R=W or current * current * resistance = watts which shows that the current passing through anything doesn't matter if there is no resistance, watts will always equal zero because anything multiplied by zero is zero. It is ONLY when there is a resistance that watts can exist and these watts will generally appear as heat (light is a visible form of heat).
  8. The PA2 is certainly the one that you hear owners proclaiming about the excellent repair service that they received from Gaugemaster. Do the others never need repairing?
  9. Where did you find this information about Molex reliability please? They make hundreds of different types of plugs and sockets and I have to say that of all the connectors I have used Molex are the ones that stand out for never having needed to be replaced.
  10. if you watch it, it shows you how to connect the power supply (about 2/3 way through at 3:09)
  11. First video here shows you what you need to know http://www.zimo.at/web2010/products/InfMXULF_EN.htm
  12. Have you thought about Molex connectors as used in computers? they are all non reversible and available from the far east cheaply, especially in bulk. e.g 4.2mm Pitch Multi Plug Connector Sets Molex 2 ~ 24 Way Male + Female + Terminal
  13. They certainly look like they will work however you could always ring Gaugemaster or write to them and get the definitive answer because they sell the item and are therefore more liable to know if they meet your needs
  14. A good set of instructions on how to use the PSU - assuming it is ATX which almost are these days here. It also provides the outputs for the various pins. https://www.electronics-tutorials.ws/blog/convert-atx-psu-to-bench-supply.html very useful supply of a good DC supply
  15. will the points operate individually? if they will then you will need 4 x switches.
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