Develop ultra capacitor power supply and LiFePO4 battery power supply

Ian, is the difference between the solo and dual LinearPis that you can set the voltage of the dual LinearPi rails individually and therefor run 5v and 3.3v from one board?

LinearPi solo would have kelvin wiring so wouldn't you be able to feed two loads from one board (the difference being you can only output one voltage)?

Would you expect any sonic benefits to keeping all rails on a linear pi the same voltage or using a solo instead of a dual?

Thanks stew1234,

LinearPi Dual is just two LinearPi Solo boards linked together. They are exactly the same. Each board can be set to 5V (default) or 3.3V.

Regards,
Ian
 
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Ian, in a single LinearPi board, how many LT3045 regs are there? With 3A possible (below) does this mean there are 6 LT3045 regs on board?

@marcus1
LinearPi uses different approach so it has very low output importance. Please see the user's manual for details. LT3045 in parallel increases the impedance.

Regards,
Ian
 
UcHybrid and UcConditioner installed

Hi,

I finally found some time to install the UcHybrid boards on my 1st gen. Battery board. The leads are soldered to the pins of the relais that connect to the battery.

I use 4 of them for clean power to Fifopi and Andrea Mori clock.
The UcConditioner is connected to power the Usbridge sig from an Allo Shanti.

Two other UcConditioners are in use for a ps for the Uptone Etherregen switch. When the LinearPi is available I will exchange the regulators and put it all in a nice box.
 

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Hi Ian,

Thanks.

This is a modified dddac With the 1794 in NOS mode. I/V is by tantalum resistors and connected balanced to my volume transformers in the tube amps.
All ps regulators are shunt type, the raw ps is a choke input unregulated with mosfet rectifiers.

This is to date still the most detailed and reveiling dac I have ever heard.
 

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Ian,

Is it possible to buy just the external screen for the LifePO4 supplies? Unfortunately I cracked the screen of one of mine when I got a bit enthusiastic installing it into a chassis and now it fails to turn on or off the power supply. It does work (although the screen itself is garbled) to turn on and off another supply that has not had its screen broken out to be external, but it will not do its own.

Anthony
 
Thanks Walter,

It is sounding pretty good indeed. Thanks to the products and creative ideas on this forum!

For the last 8 years my dddac has stood up to a lot very fine (and very expensive) dac systems and has never failed.
The development of the last year has been on the streamer part and the addition of the battery and supercaps really shows off in a lower noise floor and more openness and spaciousness in the sound.

I am looking forward to the new dac design from Andrea, that can be a game changer. Somehow I hope it will better my dddac so we can progress even more.

Regards,
 
Hi,

I finally found some time to install the UcHybrid boards on my 1st gen. Battery board. The leads are soldered to the pins of the relais that connect to the battery.

I use 4 of them for clean power to Fifopi and Andrea Mori clock.
The UcConditioner is connected to power the Usbridge sig from an Allo Shanti.

Two other UcConditioners are in use for a ps for the Uptone Etherregen switch. When the LinearPi is available I will exchange the regulators and put it all in a nice box.

What is the large box in the psu please? Code 127A is on it, thanks
 
@Ian have you had a chance to compare the sound differense between the LinearPi and the Allo Shanti? And have you landed on pricing of LinearPi yet?

Great work by the way, and much appreciated contributions to the community!

I have a Shanti, it's a good power supply. The only issue I have had with it is that the voltage drops too slow for me when I turn off it. That also makes the UcConditioner having a slow turn off when works with.

LinearPi has very low output impedance. I think that's the another advantage. You can find this performance from the dynamic load response waveform in the user's manual.

Regards,
Ian
 
Is it possible to modify 5v UcConditioner to 3,3v?

My linearpi have arrived! This is the temporary setup, I want to change the transformer, add a powerline filter and put it in a nice box.
But it is already working his magic as a 10v ps for my Etherregen switch!
 

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Is it possible to modify 5v UcConditioner to 3,3v?

My linearpi have arrived! This is the temporary setup, I want to change the transformer, add a powerline filter and put it in a nice box.
But it is already working his magic as a 10v ps for my Etherregen switch!

Very nice - I also have EtherRegen. Sound impressions compared to stock SMPS?

DC input into LinearPi, anyone tried this - would it take 12vDC in, for example from an ATX power supply?

I've always been a bit hesitant of putting transformers inside my computer enclosures.