!!

Not Registered?

Welcome!  Please register to view all of the new posts and forum boards - some of which are hidden to guests.  After registering and gaining 10 posts you will be able to sell and buy items on our N'porium.

If you have any problems registering, then please check your spam filter before emailing us.  Hotmail users seem to find their emails in the Junk folder.


Thanks for reading,
The NGF Staff.

Author Topic: Peco points - frog polarity switching  (Read 526 times)

0 Members and 1 Guest are viewing this topic.

Offline newportnobby

  • Moderator
  • Trade Count: (+54)
  • Full Member
  • ****
  • N Gauge Society Number: 21962
  • Posts: 26245
  • Country: england
  • Gender: Male
    • Awards
Re: Peco points - frog polarity switching
« Reply #15 on: October 31, 2017, 09:27:42 pm »
Wahey :claphappy: :claphappy:
That makes sense now. Thanks very much, Nick.
Dear old CJ Freezer taught there is no such thing as positive and negative but it's just I wasn't sure what the frog polarity change actually did to the power being put into the feed rails.

Expect more dumb questions as they arise ::)

Offline lil chris

  • Trade Count: (0)
  • Full Member
  • ***
  • N Gauge Society Number: 23889
  • Posts: 2503
  • Country: england
  • Gender: Male
    • Awards
Re: Peco points - frog polarity switching
« Reply #16 on: November 02, 2017, 09:43:06 pm »
Hi there, that's one of the best explanations I have seen and makes it so clear. It also proves there needs to be a positive and a negative, Sorry CJ Freezer, two negatives or two positives do not go.......Of course if you use Nick's third example you could have both points/motors operated with one switch.
Lil Chris
My layout here East Lancashire Lines
http://www.ngaugeforum.co.uk/SMFN/index.php?topic=29492.0

Offline jpendle

  • Trade Count: (0)
  • Full Member
  • ***
  • N Gauge Society Number: 23638
  • Posts: 406
  • Country: us
    • Awards
Re: Peco points - frog polarity switching
« Reply #17 on: November 02, 2017, 09:51:06 pm »
To quote Lil Chris, "2 positives or 2 negatives don't go".

Correct! That's how Electrofrog points work. Instead of isolating the route not used, they set both rails on that route to the same voltage, simply put either 12V and 12V or 0V and 0V. That means the voltage difference between the rails is 0 Volts and any loco's on that route do not move.

Nick's diagram shows this.

Regards,

John P

 

Please Support Us!
December Goal: £55.00
Due Date: Dec 31
Total Receipts: £40.00
Below Goal: £15.00
Site Currency: GBP
73% 
December Donations


Advertise Here