PJ_model_trains Posted December 27, 2014 Share Posted December 27, 2014 Hi I need to fit a resisor and capacitor to the ends of both spurs on the dcc bus. Using Radial method so needs on on each end. I have looked on Brian Lambert site, he recommends the following...1x d150 or150r resistor on each with1x bx03d capacitor on eachCodes for above are from Maplins Electronics On his web site he shows 3 small images but I need to be sure what I do is correct, not what I think is correct. The resistor is straight foward, wire resistor wire as is the capacitor, wire capacitor wire. My question is, do the two legs of thecapacitor solder either side of the resistor, if not, how should they be fit/soldered. I have not done them before. PJ Link to comment Share on other sites More sharing options...
RDS Posted December 27, 2014 Share Posted December 27, 2014 Hi PJThe resistor and capacitor are soldered in series (I think you are describing soldering them in parallel).The diagram on the Brian Lambert site just underneath the 3 small images shows better, how they should be fitted. Link to comment Share on other sites More sharing options...
Rog RJ Posted December 27, 2014 Share Posted December 27, 2014 Just click on the small pictures to get a large version that shows quite clearly that the two components are wired in series. Link to comment Share on other sites More sharing options...
PJ_model_trains Posted December 27, 2014 Author Share Posted December 27, 2014 Hi PJThe resistor and capacitor are soldered in series (I think you are describing soldering them in parallel).The diagram on the Brian Lambert site just underneath the 3 small images shows better, how they should be fitted. Hi Rds &Roger I was trying to describe what I thought I saw (on the tablet) Looking again, with your advice, and viewing the diagram below the 3 images it is, I think I am right now... Resistor, cut leg, solder tranformer, transformer leg down. One after the other not in parallell as first seemed possible. Thanks PJ Link to comment Share on other sites More sharing options...
RDS Posted December 27, 2014 Share Posted December 27, 2014 ... Resistor, cut leg, solder tranformer, transformer leg down. One after the other not in parallell as first seemed possible ...Oh well PJ, I hope the above means more to you than it does to me !!! Link to comment Share on other sites More sharing options...
Fishmanoz Posted December 27, 2014 Share Posted December 27, 2014 I think if we assume he meant capacitor when he said transformer, he's described soldering one end of the resistor to one track, the other end of the resistor to one end of the capacitor, then the other end of the capacitor to the track. At least, if he hasn't, he should've. Link to comment Share on other sites More sharing options...
RDS Posted December 27, 2014 Share Posted December 27, 2014 I just hope that if ever Brian Lambert needs any help with his excellent Technical Descriptions, that PJ is not tempted to apply!HaHa Link to comment Share on other sites More sharing options...
PJ_model_trains Posted December 27, 2014 Author Share Posted December 27, 2014 ... Resistor, cut leg, solder tranformer, transformer leg down. One after the other not in parallell as first seemed possible ...Oh well PJ, I hope the above means more to you than it does to me !!! I think I will go back to bed and get up and start again with that one!!! Link to comment Share on other sites More sharing options...
PJ_model_trains Posted December 27, 2014 Author Share Posted December 27, 2014 I think if we assume he meant capacitor when he said transformer, he's described soldering one end of the resistor to one track, the other end of the resistor to one end of the capacitor, then the other end of the capacitor to the track. At least, if he hasn't, he should've. And the prize goes to Fishmanoz ;-) Link to comment Share on other sites More sharing options...
PJ_model_trains Posted December 27, 2014 Author Share Posted December 27, 2014 I just hope that if ever Brian Lambert needs any help with his excellent Technical Descriptions, that PJ is not tempted to apply!HaHa No worries RDS Link to comment Share on other sites More sharing options...
Fishmanoz Posted December 27, 2014 Share Posted December 27, 2014 Just make sure you don't make any high resistance dry joints in your soldering PJ or the next thing you'll have melting foam under your track and 13 pages of discussion on the merits of DCC buses, bus terminators on them and what underlay my grandmother should use on her layout while sucking eggs! Sorry, back to the doghouse with WTD again. Link to comment Share on other sites More sharing options...
RDS Posted December 27, 2014 Share Posted December 27, 2014 Classic Fishy ! Link to comment Share on other sites More sharing options...
Fishmanoz Posted December 27, 2014 Share Posted December 27, 2014 Thanks, I try. My camel joke on the reply in the yellow thread is better though, IMHO. Link to comment Share on other sites More sharing options...
Tee1707818014 Posted December 27, 2014 Share Posted December 27, 2014 Lol :-) Link to comment Share on other sites More sharing options...
PJ_model_trains Posted December 28, 2014 Author Share Posted December 28, 2014 Just make sure you don't make any high resistance dry joints in your soldering PJ or the next thing you'll have melting foam under your track and 13 pages of discussion on the merits of DCC buses, bus terminators on them and what underlay my grandmother should use on her layout while sucking eggs! Sorry, back to the doghouse with WTD again. Hi Fishy1 thanks2 dcc bus, only discuss if subject raisedPJ Link to comment Share on other sites More sharing options...
PJ_model_trains Posted December 28, 2014 Author Share Posted December 28, 2014 Thanks, I try. My camel joke on the reply in the yellow thread is better though, IMHO. I hope so, I will look if I get chance, long drive shortly! Link to comment Share on other sites More sharing options...
PJ_model_trains Posted December 30, 2014 Author Share Posted December 30, 2014 Hi I need to fit a resisor and capacitor to the ends of both spurs on the dcc bus. Using Radial method so needs on on each end. I have looked on Brian Lambert site, he recommends the following...1x d150 or150r resistor on each with (150ohm, 2 watt min)1x bx03d capacitor on eachCodes for above are from Maplins Electronics On his web site he shows 3 small images but I need to be sure what I do is correct, not what I think is correct. The resistor is straight foward, wire resistor wire as is the capacitor, wire capacitor wire. My question is, do the two legs of thecapacitor solder either side of the resistor, if not, how should they be fit/soldered. I have not done them before. PJ Hi Will this be OK for the end of eack spur/leg of the DCC Bus? 150R 3W RESISTORhttp://www.bitsbox.co.uk/index.php?main_page=product_info&cPath=83_89_90&products_id=659 And this 100NF (0.1UF) 35V TANTALUMhttp://www.bitsbox.co.uk/index.php?main_page=product_info&cPath=65_80&products_id=393 PJ Link to comment Share on other sites More sharing options...
PJ_model_trains Posted December 30, 2014 Author Share Posted December 30, 2014 Hi I need to fit a resisor and capacitor to the ends of both spurs on the dcc bus. Using Radial method so needs on on each end. I have looked on Brian Lambert site, he recommends the following...1x d150 or150r resistor on each with (150ohm, 2 watt min)1x bx03d capacitor on eachCodes for above are from Maplins Electronics On his web site he shows 3 small images but I need to be sure what I do is correct, not what I think is correct. The resistor is straight foward, wire resistor wire as is the capacitor, wire capacitor wire. My question is, do the two legs of thecapacitor solder either side of the resistor, if not, how should they be fit/soldered. I have not done them before. PJ Link to comment Share on other sites More sharing options...
PJ_model_trains Posted December 30, 2014 Author Share Posted December 30, 2014 Hi I need to fit a resisor and capacitor to the ends of both spurs on the dcc bus. Using Radial method so needs on on each end. I have looked on Brian Lambert site, he recommends the following...1x d150 or150r resistor on each with (150ohm, 2 watt min)1x bx03d capacitor on eachCodes for above are from Maplins Electronics On his web site he shows 3 small images but I need to be sure what I do is correct, not what I think is correct. The resistor is straight foward, wire resistor wire as is the capacitor, wire capacitor wire. My question is, do the two legs of thecapacitor solder either side of the resistor, if not, how should they be fit/soldered. I have not done them before. PJ Hi Will this be OK for the end of eack spur/leg of the DCC Bus? 150R 3W RESISTORhttp://www.bitsbox.co.uk/index.php?main_page=product_info&cPath=83_89_90&products_id=659 And this 100NF (0.1UF) 35V TANTALUMhttp://www.bitsbox.co.uk/index.php?main_page=product_info&cPath=65_80&products_id=393 PJ This is the correct message, something strange on the laptop, message doesn't appear to be sent so I click again and when I look I see two messages?Sorry for any confusion!PJ Link to comment Share on other sites More sharing options...
2e0dtoeric Posted December 30, 2014 Share Posted December 30, 2014 PJ, it could be because you included a www link, and it was held for moderation, in case it was a 'naughty' picture! :-) Link to comment Share on other sites More sharing options...
Flashbang Posted December 30, 2014 Share Posted December 30, 2014 No. The Tantalum capacitor is incorrect, it should be a Ceramic type.If you're using Bitsbox products use Ceramic capacitor part number CC100N The resistor is fine. Connect one wire of the resistor to one wire of the capacitor (Doesn't mater which way around either are connected to each other) The remaining two wires - one form the resistor and one form the capacitor connect across the DCC bus pair of wires at the bus wires end. One filter set per end. Link to comment Share on other sites More sharing options...
PJ_model_trains Posted December 30, 2014 Author Share Posted December 30, 2014 No. The Tantalum capacitor is incorrect, it should be a Ceramic type.If you're using Bitsbox products use Ceramic capacitor part number CC100N The resistor is fine. Connect one wire of the resistor to one wire of the capacitor (Doesn't mater which way around either are connected to each other) The remaining two wires - one form the resistor and one form the capacitor connect across the DCC bus pair of wires at the bus wires end. One filter set per end. Brilliant Flashbang .I was pretty sure for the resistor but was unsure for the capacitor, hence the reason I asked. I didn't want to get it wrong, plug in and it go flash bang wallop if you know what I mean ;o) .Thanks also for confirming ... (Doesn't mater which way around either are connected to each other) .That was my next question, after soldering one to the other which way round they would go when connecting to the bus..Well sorted I can order these later it is not worth driving 70 miles round trip when they are so cheap and P&P only £1.75.Many thanks to all. .Just waiting a reply on latching unit, and jack plug in RailMaster forum, thread.Recording and playing sounds in RMhttps://www.hornby.com/forum/post/view/topic_id/7905/?p=6.PJ Link to comment Share on other sites More sharing options...
poliss Posted December 30, 2014 Share Posted December 30, 2014 I wouldn't use Tantalum caps. They tend to explode when they fail.See http://www.redrockrail.com/redrockrail/English/Kabumm.htm Link to comment Share on other sites More sharing options...
2e0dtoeric Posted December 30, 2014 Share Posted December 30, 2014 The DCC BUS has an alternating voltage on it, in other words, it can't make it's mind up which way to go round, so keeps changing it's mind, and going the other way! Link to comment Share on other sites More sharing options...
PJ_model_trains Posted December 30, 2014 Author Share Posted December 30, 2014 Hi I need to fit a resisor and capacitor to the ends of both spurs on the dcc bus. Using Radial method so needs on on each end. I have looked on Brian Lambert site, he recommends the following...1x d150 or150r resistor on each with (150ohm, 2 watt min)1x bx03d capacitor on eachCodes for above are from Maplins Electronics On his web site he shows 3 small images but I need to be sure what I do is correct, not what I think is correct. The resistor is straight foward, wire resistor wire as is the capacitor, wire capacitor wire. My question is, do the two legs of thecapacitor solder either side of the resistor, if not, how should they be fit/soldered. I have not done them before. PJ Which of these resistors do you think is correct from Maplins?http://www.maplin.co.uk/p/metal-film-2w-150-ohm-resistor-d150r d150r Metal Film 2W 150 Ohm Resistor Link to comment Share on other sites More sharing options...
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