Electric problem HO train layout

Discussion in 'The Projects Forum' started by redbird731, May 10, 2009.

  1. redbird731

    Thread Starter New Member

    May 10, 2009
    1
    0
    Have A 24 volt Ac transformer operating latching relays. Need to operate 16 volt AC switching coils on the same circut,what reistor or reistors do I need to lower the voltage on the coil side of the switch. Thanks for any help.
     
  2. CDRIVE

    Senior Member

    Jul 1, 2008
    2,223
    99
    This depends on what the relay coil's operating current @ 16V is. You can measure this or you can measure the resistance of the coil (POWER OFF) to determine it. When you know either value please post it and you will get a quick answer.
     
  3. KL7AJ

    AAC Fanatic!

    Nov 4, 2008
    2,040
    287
    For the instantaneous switching of H.O. points, you can probably get by with 24 volts. I'm pretty sure that's what I did....won't tell you how long ago. :)


    Eric
     
  4. PRS

    Well-Known Member

    Aug 24, 2008
    989
    35
    Can you wind a 3:2 transformer? Resistive voltage dividers waste power. You can also use two capacitors to step down the voltage as long as you're using ac. Calculate Xc1:Xc2 = 3:2 at 60 Hertz.
     
Loading...