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Model Railroading > wow diesel sound decoder -questionDate: 07/30/15 19:20 wow diesel sound decoder -question Author: Charls Hi guys, are the TCS WOW diesel sound decoder have resistance built-in for using 1.5v bulbs or we need to add a resistance to each lead, nothing is said on the instruction unless not showing any in the diagram means that they are incude on the board already
Thanks Charls Date: 07/30/15 19:55 Re: wow diesel sound decoder -question Author: barrydraper None of the WOW decoders have any on-board resistors for either LEDs or 1.5 volt bulbs (yet). If you want to use 1.5 vo;t bulbs you can either calculate and install your own resistors, or use the TCS VR1.5 voltage regulator to supply 1.5 volts to all the bulbs.
Barry Draper Date: 07/31/15 03:19 Re: wow diesel sound decoder -question Author: bnsf70mac I found that a lot of the LEDs are now 3.3 volts so 1.5 volts wont work to light them. Just be aware what volt your LEDs are.
Date: 07/31/15 08:29 Re: wow diesel sound decoder -question Author: brfriedm This changed yesterday. See above. Bruce
barrydraper Wrote: ------------------------------------------------------- > None of the WOW decoders have any on-board > resistors for either LEDs or 1.5 volt bulbs > (yet). If you want to use 1.5 vo;t bulbs you can > either calculate and install your own resistors, > or use the TCS VR1.5 voltage regulator to supply > 1.5 volts to all the bulbs. > > Barry Draper Date: 07/31/15 08:30 Re: wow diesel sound decoder -question Author: brfriedm Not aware of any LED's that are not in the 3 volt range. Bruce
bnsf70mac Wrote: ------------------------------------------------------- > I found that a lot of the LEDs are now 3.3 volts > so 1.5 volts wont work to light them. Just be > aware what volt your LEDs are. Date: 07/31/15 12:10 Re: wow diesel sound decoder -question Author: bnsf70mac I have LEDs that are both 1.5 volts and 2.4 volts. Yes these were bought awhile back but I still use them.
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