QUOTE (B B Beyer @ 17 Nov 2008, 08:07)
<{POST_SNAPBACK}>I'm using the 15 V DC analogue accessory power supply on the Hornby Select unit to power a Hornby R0814 point motor, controlled with an R044 passing contact switch. The point switching works fine - the only problem is, every time you throw the switch, it kills the track power and control feed and resets the controller, which goes through its "power up" sequence. This makes train control impossible if you throw the point switch. Anyone else experienced this?
*** Hornbys advice is actually very bad.
Their point motor has a peak draw of approximately 4 amps. As with any point motor - Seep, Peco or Hornby, it must NOT use the track power or the same transformer as used for the DCC system.
You need a good separate power supply even when using MASTERswitch... Brian is correct... Current is current (amps), and it cannot come from nowhere.
The ideal and possibly free power supply for these is an old laptop computer supply - 15~18V AT 3~5 amps. They often get thrown in a corner when the laptop dies, so lok/ask around...
All you need to do is cut off the plug where it would be attached to the laptop and use those two wires....
Richard