judo Posted October 5, 2016 Report Share Posted October 5, 2016 Yes, I thought so. Thank you for the answer. Quote Link to comment Share on other sites More sharing options...
jose Posted October 6, 2016 Report Share Posted October 6, 2016 I´m thinking about use a relé for cut the AC from IEC to toroid on my Carbon. This relé is connecting via Arduino at two LM35DT on the heatsinks. If the temperature is very high, Arduino send a signal to relé and this will cut the current for safety. I´m not sure what kind of relé is the best opción. I´m thinking on a solid state relé but a friend of mine said that this not a good idea because this relé use a triac and can introduce noise on the current. What do you thing? Quote Link to comment Share on other sites More sharing options...
johnwmclean Posted October 6, 2016 Report Share Posted October 6, 2016 ambs e24 power switch circuit has a sensing loop option using thermal breakers may be an alternative. Quote Link to comment Share on other sites More sharing options...
Skooby Posted October 7, 2016 Report Share Posted October 7, 2016 5 hours ago, jose said: I´m thinking about use a relé for cut the AC from IEC to toroid on my Carbon. This relé is connecting via Arduino at two LM35DT on the heatsinks. If the temperature is very high, Arduino send a signal to relé and this will cut the current for safety. I´m not sure what kind of relé is the best opción. I´m thinking on a solid state relé but a friend of mine said that this not a good idea because this relé use a triac and can introduce noise on the current. What do you thing? I've tried B+ relay from this article, but haven't tried the AC relay: http://www.audioxpress.com/article/arduino-based-tube-power-amplifier-controller/9883 The included C code got temp. sensing, so you can adapt it to your need. I used Adafruit Pro Trinket, half price of the Arduino board and it uses the same IDE. 1 Quote Link to comment Share on other sites More sharing options...
luvdunhill Posted October 7, 2016 Report Share Posted October 7, 2016 Why not just use a thermal switch on AC mains? Check out the Cantherm product line at Digikey. 1 Quote Link to comment Share on other sites More sharing options...
jose Posted October 7, 2016 Report Share Posted October 7, 2016 Thanks guys. Yes I can use those options but on my Carbon, Arduino controls the input selector and the frontal lights too. I was reading the Audioxpress article and it´s very interesting but I am not sure. What is a Optical Relay? references? Thanks Quote Link to comment Share on other sites More sharing options...
luvdunhill Posted October 15, 2016 Report Share Posted October 15, 2016 Thanks guys. Yes I can use those options but on my Carbon, Arduino controls the input selector and the frontal lights too. I was reading the Audioxpress article and it´s very interesting but I am not sure. What is a Optical Relay? references? ThanksIt's just an optoisolated relay. Quote Link to comment Share on other sites More sharing options...
jose Posted October 17, 2016 Report Share Posted October 17, 2016 Thanks!!! I have two SS relays so I need sometime for a test. Quote Link to comment Share on other sites More sharing options...
GeorgeP Posted October 24, 2016 Report Share Posted October 24, 2016 Just adding yet another carbon build to the thread (crappy phone pics). 400v supplies rather than 450v allowed the caps to be board mounted in my chassis (though I am having some of Kevin's off-board PCBs made for a possible future 450v version). 400v also has the added benefit of running (slightly) cooler than the 450v version. Added the GRLV supplies but don't have a non-GRLV version to compare. But this amp is a true winner. Every time I listen to it I am awe struck at how good it is, particularly when compared to the T2 - they both have that ability to fool you into not realizing how loud you have cranked up the volume. 15 Quote Link to comment Share on other sites More sharing options...
mwl168 Posted October 24, 2016 Author Report Share Posted October 24, 2016 Nice build George! Congrats! How much output current are you running and what's the temperature on the heatsink upon full warm-up?? Quote Link to comment Share on other sites More sharing options...
GeorgeP Posted October 24, 2016 Report Share Posted October 24, 2016 20mA and ~100deg on psu side and ~114deg on amp side - that is after about 4hours. The 450v version I built previously was closer to 130deg on the amp side. I do find the servo to not be necessary though (even though it is populated here) - the amp is just that good at getting to the proper balance and offsets fairly quickly. With the servo, maybe it shaves a few minutes off the warm-up time. Quote Link to comment Share on other sites More sharing options...
johnwmclean Posted October 25, 2016 Report Share Posted October 25, 2016 Very nice build. And an interesting perspective alongside your T2. Quote Link to comment Share on other sites More sharing options...
eggil Posted October 25, 2016 Report Share Posted October 25, 2016 Beautiful build! Quote Link to comment Share on other sites More sharing options...
Kerry Posted October 25, 2016 Report Share Posted October 25, 2016 Really nice George! Congrats Quote Link to comment Share on other sites More sharing options...
Rossliew Posted October 25, 2016 Report Share Posted October 25, 2016 Nice clean interior, George? Will this be one of your personal units? Quote Link to comment Share on other sites More sharing options...
chinsettawong Posted October 25, 2016 Report Share Posted October 25, 2016 Very nice! Quote Link to comment Share on other sites More sharing options...
Pars Posted October 25, 2016 Report Share Posted October 25, 2016 Nice build George! Quote Link to comment Share on other sites More sharing options...
JimL Posted October 25, 2016 Report Share Posted October 25, 2016 Very, very nice, George! Quote Link to comment Share on other sites More sharing options...
sorenb Posted November 15, 2016 Report Share Posted November 15, 2016 21 Quote Link to comment Share on other sites More sharing options...
nopants Posted November 15, 2016 Report Share Posted November 15, 2016 black jacks best jacks 1 Quote Link to comment Share on other sites More sharing options...
gepardcv Posted November 15, 2016 Report Share Posted November 15, 2016 Spectacular! Quote Link to comment Share on other sites More sharing options...
UFN Posted November 15, 2016 Report Share Posted November 15, 2016 Nice. Gotta get mine finished soon //UFN Quote Link to comment Share on other sites More sharing options...
HemiSam Posted November 15, 2016 Report Share Posted November 15, 2016 Very nice, Soren! HS Quote Link to comment Share on other sites More sharing options...
johnwmclean Posted November 16, 2016 Report Share Posted November 16, 2016 That’s gorgeous Soren. Very nice photography too. Quote Link to comment Share on other sites More sharing options...
Pars Posted November 16, 2016 Report Share Posted November 16, 2016 Yes, very nice! Quote Link to comment Share on other sites More sharing options...
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