--- In [email protected], "vito4cal" <vito4cal@...> wrote: > > --- In [email protected], "Thorin" <lagthor@> wrote: > > > > Dear Don: > > As usual I am behind in my reading. > > > > If track voltage is 16 volts (or more) is the lighting output 16 volts (or > > more)? Or is there an on-board regulator so the output is a true 12V? > > > > Thorin > > > ==================================================================== > > Thorin: > > FWIW, I was told that the function & lighting leads on the Tsunami TSU-1000 > decoder will output 1 volt less than track power voltage. > > I have observed the following voltage measurements. My Digitrax DCC system > puts out a track voltage of 13.6 volts. Each function/lighting output of the > Tsunami TSU-1000 decoder puts out 12.6 volts. So my experience seems to > confirm what I was told. > > Hope this helps, > > John Gibson > Rocklin, CA > > PS. I believe that some of the drop in board Tsunami decoders have built in > resistors. > ==============================================================
Two other quick points: 1. The track voltage and function voltage will vary with different manufacturer's systems. 2. If you are using LEDs, the starting resistor value is 1k ohm at 1/2 watt. That should be sufficient for most lighting installations. You may "carefully" step down to a smaller resistor for additional brightness until you get the LED flashout. <VBG> If you are using bulbs, then it is prudent to get the actual voltage measurements and either do the Ohms law calculation or rely on a cheat sheet such as can be located here <http://www.tcsdcc.com/public_html/Customer_Content/Technical_Info/Tech_Info/FAQPage.php?q=51> for a general recomendation on resistors. If you have additional questions, please do not hesitate to contact me. John "turn out the lights" Gibson Rocklin, CA ------------------------------------ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/S-Scale/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/S-Scale/join (Yahoo! ID required) <*> To change settings via email: [email protected] [email protected] <*> To unsubscribe from this group, send an email to: [email protected] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
