From: usenet.16@scottsonline.org.uk.invalid   
      
   Hi - I'm working on a model railway project using pico boards, but have   
   spotted something that ought to be improved.   
      
   The power to each section of track is scheduled to be switched by a   
   relay. I've a bank of 8 traditional relays, but have just realized the   
   total relay current will be up to a half amp or so worst case. I'm   
   looking to a solid state solution.   
      
   The relays are switching DC at 12V, but the polarity is determined   
   before the on/off relay. Most SS relays I've seen are triac-based for AC   
   only; one type would do DC, but not with the polarity changing (and at   
   10x the cost anyway!).   
      
   Does anyone know anything solid state that might do this without   
   breaking the bank?   
      
   Thanks.   
      
   --   
   Mike Scott   
   Harlow, England   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)