hurka Posted January 9, 2018 Share Posted January 9, 2018 I have many unused components at home,would be great make some linear ps , better than ultracaps,closer to Paul H. Any advice? Link to comment
hurka Posted January 9, 2018 Author Share Posted January 9, 2018 Example, this Tanly audio ps not bad,maybe can little mod? Link to comment
hurka Posted January 9, 2018 Author Share Posted January 9, 2018 I'm finish,so fast! 200W toroidal , lt 1084 ,lt 1963 , lt 3045 = sps500 for sale!!! Link to comment
Advieira Posted January 9, 2018 Share Posted January 9, 2018 3 hours ago, hurka said: sps500 for sale!!! How much? Link to comment
hurka Posted January 10, 2018 Author Share Posted January 10, 2018 4 hours ago, Advieira said: How much? I'm just ironic, sps 500 small ,powerful,think ideal with mobo,nna,etc. Link to comment
sandyk Posted January 10, 2018 Share Posted January 10, 2018 Hurka You will need to keep the Input to Output voltage difference quite low due to the small size of the heatsink. Alex How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file. PROFILE UPDATED 13-11-2020 Link to comment
hurka Posted January 10, 2018 Author Share Posted January 10, 2018 3 minutes ago, sandyk said: Hurka You will need to keep the Input to Output voltage difference quite low due to the small size of the heatsink. Alex thank you Alex! My big toroidal at home only 12v ,so the plan: 11/9/5 v steps down. Link to comment
sandyk Posted January 10, 2018 Share Posted January 10, 2018 38 minutes ago, hurka said: thank you Alex! My big toroidal at home only 12v ,so the plan: 11/9/5 v steps down. Hurka A 12V transformer winding into a Bridge rectifier, and followed by a filter capacitor will result in a voltage of around 16.8V less rectifier voltage drops, so you can expect around 16V to start with . Alex Click on the image for a larger image. How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file. PROFILE UPDATED 13-11-2020 Link to comment
hurka Posted January 10, 2018 Author Share Posted January 10, 2018 Thanks!! 11v Lt 1084 output side was I planned. fix 9v lt 1963 ordered. The lt3045 variable output. Link to comment
hurka Posted January 14, 2018 Author Share Posted January 14, 2018 I compared some psu's Before 10 pm LPS1 +Teradak SPS500 my DIY linear rail my DIY u cap power bank without regulators results: 1. LPS1 2.DIY u cap 3.DIY linear 4.SPS 500 after 10 pm: 1.DIY linear 2.Sps500 3.LPS1 4.DIY u cap Link to comment
sandyk Posted January 14, 2018 Share Posted January 14, 2018 42 minutes ago, hurka said: I compared some psu's Before 10 pm LPS1 +Teradak SPS500 my DIY linear rail my DIY u cap power bank without regulators results: 1. LPS1 2.DIY u cap 3.DIY linear 4.SPS 500 after 10 pm: 1.DIY linear 2.Sps500 3.LPS1 4.DIY u cap Don't forget that larger value electrolytic capacitors usually take quite a few hours of use on them before they fully stabilise. How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file. PROFILE UPDATED 13-11-2020 Link to comment
hurka Posted January 14, 2018 Author Share Posted January 14, 2018 54 minutes ago, sandyk said: Don't forget that larger value electrolytic capacitors usually take quite a few hours of use on them before they fully stabilise. My first thought not about large capacitor. The Ac main quality at home,this my serious problem! Link to comment
Cornan Posted January 14, 2018 Share Posted January 14, 2018 3 hours ago, hurka said: My first thought not about large capacitor. The Ac main quality at home,this my serious problem! Interesting! Do you use isolations transformers (balanced, floating etc?), AVRs or AC mains DC blockers of any kind? Despite these inline there is still a difference depending on time of the day, but less so IME. Also, I would recommend that you try a JSGT on your DIY linear PSU. It can reduce a slight HF fog. I am currently experimenting with different spots for it to make it optimal on my 3A single ps LT3045. Link to comment
hurka Posted January 14, 2018 Author Share Posted January 14, 2018 1 minute ago, Cornan said: Interesting! Do you use isolations transformers (balanced, floating etc?), AVRs or AC mains voltage regs of any kind? Despite these inline there is still a difference depending on time of the day, but less so IME. Also, I would recommend that you try a JSGT on your DIY linear PSU. It can reduce a slight HF fog. I am currently experimenting with different spots for it to make it optimal. with sotm tx usb ultra and others.., and perfect time,(ac not noisy,at night) BEST sound that I we ever heard . Many times the ac noisy,i cant enjoy the music,so bad. Before I don't have usb ultra,the difference was not huge,i can accept the sound. I'm using 9 PCS!!!!!!!! isolation traansformers!!!!!!Help a lot,but not 100%. Link to comment
Cornan Posted January 14, 2018 Share Posted January 14, 2018 1 minute ago, hurka said: with sotm tx usb ultra and others.., and perfect time,(ac not noisy,at night) BEST sound that I we ever heard . Many times the ac noisy,i cant enjoy the music,so bad. Before I don't have usb ultra,the difference was not huge,i can accept the sound. I'm using 9 PCS!!!!!!!! isolation traansformers!!!!!!Help a lot,but not 100%. Wow, nine ITs! Which kind of ITs do you use? I can tell you that IME (using four different kinds of ITs) the balanced isolation transformer with floating center-tap (floating secondary) is simply outstanding. The switch is not needed. Grounded center tap cannot even compare. A 2-pole RCD/GFCI at the output is however a must with this IT. Link to comment
hurka Posted January 14, 2018 Author Share Posted January 14, 2018 4 minutes ago, Cornan said: Wow, nine ITs! Which kind of ITs do you use? I can tell you that IME (using four different kinds of ITs) the balanced isolation transformer with floating center-tap (floating secondary) is simply outstanding. The switch is not needed. Grounded center tap cannot even compare. A 2-pole RCD/GFCI at the output is however a must with this IT. Link to comment
Cornan Posted January 14, 2018 Share Posted January 14, 2018 2 hours ago, hurka said: Nice looking! Not much info from the sellers on eBay on the Cow King PS-500 regarding the construction. Looks like it have grounded secondary though. Ultra IT? Power filters? Link to comment
Cornan Posted January 14, 2018 Share Posted January 14, 2018 After some experimenting with JSGT with my Gophert csp-3205II>3A Single ps LT3045>Brooklyn DAC I think I just found the optimal spot so far where the slight HF fog (very slight) heard through my Fostex TH900 (not via Gibson LP 8 monitors though). Between the DC input of my Brooklyn DAC and the star-earth receptacle of my starquad-wired PSD. Link to comment
Cornan Posted January 14, 2018 Share Posted January 14, 2018 I just made a simple switch of the JSGT end to the star-earthed receptacle to the Entreq Minimus grounding box using the same Supra CombiCon banana plug. It took roughly 10 seconds for the sound just opened up. Amazing really! Now there is no sign at all of that HF fog. All gone now and everything I earlier heard was there but was slightly masked by that HF fog have just emerged from the shadow. Wow, I am speachless. Sounds SO good! ? hurka 1 Link to comment
hurka Posted January 15, 2018 Author Share Posted January 15, 2018 22 hours ago, sandyk said: Link to comment
hurka Posted January 15, 2018 Author Share Posted January 15, 2018 Something like this: Cornan 1 Link to comment
Cornan Posted January 15, 2018 Share Posted January 15, 2018 5 hours ago, hurka said: Something like this: Interesting! Could you explain a little about what you´ve got inside there? Link to comment
Cornan Posted January 15, 2018 Share Posted January 15, 2018 My next mission will be to put Stammheims (Michaels) 3A LT3045 single ps in series pre my Brooklyn DAC (14v>13v/3A>12v/3A) to see if that will improve things further! Interesting that the new LPS-1.2 is using LT3045s in parallel on a single board as well. Putting two parallel single boards in series should atleast in theory make things ever better. Let´s see! Link to comment
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