AudioCircle

Other Stuff => Archived Manufacturer Circles => Hagerman Technology => Topic started by: REY on 8 Mar 2015, 04:18 pm

Title: A better power supply for Bugle 2
Post by: REY on 8 Mar 2015, 04:18 pm: What is everybody out there using? I was thinking batteries perhaps, and then I saw this on ebay
http://www.ebay.com/itm/251551198778?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

I wonder how much better can the bugle 2 perform with a nicer power juicer

Thanks in advance guys
Title: Re: A better power supply for Bugle 2
Post by: hagtech on 9 Mar 2015, 03:19 am: I am working on an updated supply. It will help more with PICCOLO2 performance than BUGLE2, but any sort of improvement like this is good. Hopefully they will be for sale this summer.

For now, you'll have to give this a try. The output needs to be floating though - with neither output tied to EARTH. The other option is to use a dual supply (+12V, -12V, GND) and remove U1.

jh
Title: Re: A better power supply for Bugle 2
Post by: Elso on 10 Mar 2015, 07:43 am: I am using a PCB with two TPS7A4700 4.17uV ultralow noise regulators. It brings me in audio Nirvana with the Piccolo 2. Simply removed the inductors, supply splitter and 470 ohm resistors. Connected a wire to the ground clamp for the zero Volt reference.
(http://www.audiocircle.com/image.php?id=116547)
Title: Re: A better power supply for Bugle 2
Post by: tlainhart on 26 Mar 2015, 12:45 am: Quote from: hagtech on 9 Mar 2015, 03:19 am
I am working on an updated supply.

Is this the sort of thing you're designing?

http://welbornelabs.com/cat/phonostagepowersupplyupgrades.htm (http://welbornelabs.com/cat/phonostagepowersupplyupgrades.htm)
Title: Re: A better power supply for Bugle 2
Post by: hagtech on 28 Mar 2015, 03:19 am: Similar, but smaller. And important the negative side of output is not tied to ground. The CORNET3 supply will be bigger.

jh
Title: Re: A better power supply for Bugle 2
Post by: izerbi on 30 Mar 2015, 10:10 am: Can we not use the bugle PS? Mine worked flawlessly since day one and is out of use since i built the bugle2.
If it can be used, how to connect it?
Thanks for helping.
Title: Re: A better power supply for Bugle 2
Post by: hagtech on 3 Apr 2015, 05:44 am: You could use the original Bugle Power Supply, but it would require modifications to the Bugle2 circuit (removing J1 and U1).

jh