rbv2 Posted March 27, 2011 Report Posted March 27, 2011 hi all, can anybody give me a link where to order the perfect psu for my little sammichSID please? its not that i'm to lazy to search myself but it seems that i'm not able to find one that doesnt produce noise or hum. in the meantime i bought 4 different psu and none of them works adequate.. thanks rbv2 Quote
Wilba Posted March 27, 2011 Report Posted March 27, 2011 I linked to one from Reichelt in this thread post: http://midibox.org/forums/index.php?showtopic=13161&view=findpost&p=121095 but link is broken now. Just wait a bit and my German slave nILS will assist you... :wink: Quote
Param1 Posted March 28, 2011 Report Posted March 28, 2011 http://www.conrad.de/ce/de/product/518322/STECKERNETZGERAeT-PA-1000S-LED This is the only available non-switchmode psu that I know. As you probably know, these old-school psus are/will be forbidden in Germany and Europe. I have to add tho, that mine only delivers 11.51V. Quote
rbv2 Posted March 28, 2011 Author Report Posted March 28, 2011 http://www.conrad.de/ce/de/product/518322/STECKERNETZGERAeT-PA-1000S-LED This is the only available non-switchmode psu that I know. As you probably know, these old-school psus are/will be forbidden in Germany and Europe. I have to add tho, that mine only delivers 11.51V. thanks guys! hey param1, that voltcraft psu is also part of my collection. are you happy with it? for me its still to much noise.. or lets say more than the normal noise you get from other synths! rbv2 Quote
Wilba Posted March 28, 2011 Report Posted March 28, 2011 Are you sure the noise is from the PSU and not from the SIDs? 6581 SIDs are pretty noisy anyway (i.e. very high noise floor). Quote
rbv2 Posted March 28, 2011 Author Report Posted March 28, 2011 hmmmm.. im not shure, i'll do a recording of it this week and upload it! also i have to check which kind of sids iam using.. maybe im to picky and its in the normal range. :ahappy: thanks Quote
Param1 Posted March 28, 2011 Report Posted March 28, 2011 I think the PSU is fine. I use 8580 chips and I they emit the most noise of all my synths. I have no problem with it tho. In fact I own a noise sample collection. :-) Quote
Flying Panther Posted March 28, 2011 Report Posted March 28, 2011 http://www.conrad.de/ce/de/product/518322/STECKERNETZGERAeT-PA-1000S-LED This is the only available non-switchmode psu that I know. As you probably know, these old-school psus are/will be forbidden in Germany and Europe. I have to add tho, that mine only delivers 11.51V. Didn't know that.. Why would they be (or going to be) forbidden? Because switchmode is more efficient? Or am I missing some point here? Quote
Param1 Posted March 28, 2011 Report Posted March 28, 2011 Didn't know that.. Why would they be (or going to be) forbidden? Because switchmode is more efficient? Or am I missing some point here? Yes, comparable to bulbs. Quote
Flying Panther Posted March 29, 2011 Report Posted March 29, 2011 So it looks like we're all going to be energy efficient :) Makes sense, but let's hope better switch-mode PSU's will become more widely available for the special applications where the noise can be a problem. Quote
Wilba Posted March 29, 2011 Report Posted March 29, 2011 The only good (no noise) switchmode PSU I found was this one: http://www.jaycar.com.au/productView.asp?ID=MP3242&CATID=27&form=CAT&SUBCATID=381 All the other ones (i.e. regulated DC plugpack kind) I've used were noisy. I observed that if I "earthed" the negative output, the noise went away... but that's a bit of a hack and possibly dangerous or something. So I went looking for switchmode PSUs that had an earth connection (i.e. 3-pin power socket). I bought the one linked above and it's rock solid for sammichSID, not even a hint of noise, my transformer based regulated 12V DC plugpack is noisier than this one... but no good for sammichFM. Don't ask me why. Maybe because it is earthed instead of a basic AC/AC transformer. Quote
rbv2 Posted March 29, 2011 Author Report Posted March 29, 2011 (edited) hi, this is the noise i get from the output, the clicks and pops occur by using the encoder! the psu is the voltcraft named by param1. http://kiwi6.com/file/vy7o58mbv8 thanks wilba! i`ll give it a try and order one of these! hope to find a shop in germany. Edited March 29, 2011 by rbv2 Quote
Param1 Posted March 30, 2011 Report Posted March 30, 2011 Hm, I don't have your issues with the Voltcraft PSU. Quote
rbv2 Posted March 30, 2011 Author Report Posted March 30, 2011 Hm, I don't have your issues with the Voltcraft PSU. hmm, interesting.. any ideas what else i can do? thanks Quote
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