These are indeed better, results in 162,5F 5.4V max 3.4mOhm.
Noisefloor will be much lower (almost zero) and outperform lifepo4.
I have used it for powering complete FIFO 2 kit / Isolator / DualXO 2 board and fed crystals separately. I used2 banks 100F for all power rail psu's. Could feed them about half an hour before needed to switch banks. Charge time is in seconds, depending on amperage charging adapter. I use simple laptop adapter and CC/CV converter (5A or more)
Very interested in your findings, for source hardware like dac and fifo / isolators / xo board / xo's i think this unbeatable!!!
Still need repair my dac
Had some issues with faulty second hand ucaps.Will never use those again, Maxwell (and those Nesscaps) are the best.
These also could be very good for powering output stages, but need more than 3 in series to get needed voltage. If put more than 3 in series, be aware you need balancing circuitry, otherwise they can get overloaded when charging! There are several balancing boards available TaoBao.
https://s.taobao.com/search?q=350f+...all:1&initiative_id=staobaoz_20180609&ie=utf8
These are indeed better, results in 162,5F 5.4V max 3.4mOhm.
Noisefloor will be much lower (almost zero) and outperform lifepo4.
I have used it for powering complete FIFO 2 kit / Isolator / DualXO 2 board and fed crystals separately. I used2 banks 100F for all power rail psu's. Could feed them about half an hour before needed to switch banks. Charge time is in seconds, depending on amperage charging adapter. I use simple laptop adapter and CC/CV converter (5A or more)
Very interested in your findings, for source hardware like dac and fifo / isolators / xo board / xo's i think this unbeatable!!!
Still need repair my dac
Will never use those again, Maxwell (and those Nesscaps) are the best.
These also could be very good for powering output stages, but need more than 3 in series to get needed voltage. If put more than 3 in series, be aware you need balancing circuitry, otherwise they can get overloaded when charging! There are several balancing boards available TaoBao.
https://s.taobao.com/search?q=350f+...all:1&initiative_id=staobaoz_20180609&ie=utf8
more choices for protection board
超级电容均衡板 means a balancing board for the super capacitor.
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Some quick update.
I roughly did ultra capacitor test on my ESS DAC HAT yesterday by comparing with LiFePO4 batteries. The result was pretty promising.
Both of them sound very good, much better than any low noise LDOs.
But to me, Maxwell ultra capacitors have quieter back ground and clearer instrument separate position on stage.
I'll do more test to confirm.
Ian
I roughly did ultra capacitor test on my ESS DAC HAT yesterday by comparing with LiFePO4 batteries. The result was pretty promising.
Both of them sound very good, much better than any low noise LDOs.
But to me, Maxwell ultra capacitors have quieter back ground and clearer instrument separate position on stage.
I'll do more test to confirm.
Ian
That is what I was talking about Ian
Please, also keep in mind that ultracaps need burn-in period too, just like normal capacitor. This means, if using two banks, switching, you have to burn-in 2 weeks before max SQ.
It will blow you off your socks, after 2 weeks of burn in, NO WAY going back to other psu's!
Good luck!
Alex
Would be great to have DIY board for that.
Utoneaudio has done already. It is called UltraCap™ LPS-1, but it is very expensive
@iancanda Maybe you would design something like that with those caps As for the output impedance current Salas shunts have around few mOhms and the newest one Salas Ultra Bib v1.3 has Zout of 150u
(micro)Ohms! measured. Noise plots are also spectacular.
I am wonder how does it compare to those SuperCaps. Has anyone done it? So many options ...
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Would be great to have DIY board for that.
Utoneaudio has done already. It is called UltraCap™ LPS-1, but it is very expensive
As for the output impedance current Salas shunts have around few mOhms and the newest one Salas Ultra Bib v1.3 has Zout of 150u
(micro)Ohms! measured. Noise plots are also spectacular.
I am wonder how does it compare to those SuperCaps. Has anyone done it? So many options ...
Agree with you that Salas shunt regulators are very good. I have at least 6 of them.
But for audio applications, regulators still can not catch up with batteries and ultra capacitors no matter how good they are. The key problem is not the output impedance or noise, it's the feedback.
Both battery and ultra capacitor are passive components, there is no any feedback, so the load response is much better then active regulator with feedback.
I would be very interested in having your update about the comparing.
Regards,
Ian
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Interesting. Thanks. I will definitely compare them.
So what prevents you from building PSU like LPS-1 but with those super caps?
What is the challenge here?
Interesting. Thanks. I will definitely compare them.
So what prevents you from building PSU like LPS-1 but with those super caps?
Just matter of time
. Some details but I don't think there is any difficulty. Regards,
Ian
Just matter of time
Regards,
Ian
hehe
Can't wait then. That would be awesome!!!
Maybe this DATS units overlaid traces can be interesting visual comparison here lately, we see one 12.000uF/71V NIPPON CHEMI-CON 40x90mm, then parallels of same using alligator clips in config of x2 x3 x4 x5 x6 x7 x8 and in the end one huge value low voltage 35F/2,7V COOPER BUSSMANN HV1635-2R7356-R 16x35mm. On left graph impedance is logarithmic verse rights linear scale, guess its not necessary tell which trace belong where and best chance of filtering/shorting out any 50/60/100/120Hz mains noise
Attachments
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Maybe this DATS units overlaid traces can be interesting visual comparison here lately, we see one 12.000uF/71V NIPPON CHEMI-CON 40x90mm, then parallels of same using alligator clips in config of x2 x3 x4 x5 x6 x7 x8 and in the end one huge value low voltage 35F/2,7V COOPER BUSSMANN HV1635-2R7356-R 16x35mm. On left graph impedance is logarithmic verse rights linear scale, guess its not necessary tell which trace belong where and best chance of filtering/shorting out any 50/60/100/120Hz mains noise
Hi BYRTT,
Do you mean the blue one the 35F/2,7V COOPER BUSSMANN HV1635-2R7356-R?
Ian
Yes and wish it was available too at say 64 volts for use into unregulated layouts usual used into many power amps power supply : )
My ultracapacitor test set up
Here is my set up for ultra capacitor test. The power supply is so simple. But amazing, it's sound so good.
It also makes the whole system very clean. There is no any other complicated power supply, just a pair of 325F ultracapacitor. I have to say it's really nice. Better than any other power supply.
BTW, never short the ultracapacitor, or it could damage anything.
ultraCapacitorTest by Ian, on Flickr
Ian
Here is my set up for ultra capacitor test. The power supply is so simple. But amazing, it's sound so good.
It also makes the whole system very clean. There is no any other complicated power supply, just a pair of 325F ultracapacitor. I have to say it's really nice. Better than any other power supply.
BTW, never short the ultracapacitor, or it could damage anything
.
ultraCapacitorTest by Ian, on Flickr
Ian
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Would be great to have DIY board for that.
Utoneaudio has done already. It is called UltraCap™ LPS-1, but it is very expensive
As for the output impedance current Salas shunts have around few mOhms and the newest one Salas Ultra Bib v1.3 has Zout of 150u
(micro)Ohms! measured. Noise plots are also spectacular.
I am wonder how does it compare to those SuperCaps. Has anyone done it? So many options ...
UltraCapTM LPS-1 is mainly a balance board, you can purchase it yourself.
Attachments
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Here is my set up for ultra capacitor test. The power supply is so simple. But amazing, it's sound so good.
It also makes the whole system very clean. There is no any other complicated power supply, just a pair of 325F ultracapacitor. I have to say it's really nice. Better than any other power supply.
BTW, never short the ultracapacitor, or it could damage anything
ultraCapacitorTest by Ian, on Flickr
Ian
UltraCap is easily damaged without the protective board.
hehe
++++1
I have an uptone battery PS and it is exceptionally good - it's what powers Ian's clock board now in my DAC. Using Lifepo to power the OCXO's was better but not by the margin I'd imagined...DIY version of board ready to populate with cells to achieve different voltages would be amazing!
Ian,
My ultracaps project you saw (powering ALL dac-voltage rails separately, and ALL other voltage rails for fifo II/Isolator/dualXO II/ etc. as well) is also based on COOPER BUSSMANN HV1635 but the 100F version. They are not the best ultracaps, the Maxwells are much better, so can you imagine how yours perform
Btw, please do NOT go the LPS-1 route, since they still use regulation which ruins the perfect ultracaps specs!!!!!
My wish for you to design
:Design a circuitry, microprocessor driven, with the possibility to set a LOW threshold Voltage to switch between two banks of ultracapacitors. Switching devices based on VERY LOW RDS-ON MOSFETS, capable of switching several Amperes for fast charging.
It also would be nice if design also could handle voltages up to 60V for powering power amps, AND ESPECIALLY for DRIVER AMP circuitry!!!
This way we also could use this design to power the DRIVER AMP section in our power amps, which will make a HUGE difference in SQ!!!
And last, but definitely not least, this could be the holy grail to power output stages.....
About your concern overpowering the ultracaps while switching, when microprocessor controlled, you could build-in a very short delay time, which will be compensated by a good buffer elco at it's output, that is what I use to prevent hick-ups in power delivery while switching the banks.
I am VERY sure you would have a HUGE hit on the DIY audio market, and MANY people would be interested in buying such a design, including myself!!
Before I forget, since Class-D designs are "the new thing", it is very good possible that in the near future there will be new Class-D designs which CAN surpass Class-A Mosfet amplifiers SQ. ALL Class-D amplifiers do prosper from GOOD power source. So, can you imagine how a GOOD Class-D amp would sound if powered by Ultracaps?
About Mosfets for switching, ST for example has a 60V 120A 0.0024 RDS-ON mosfet which would be a very good choice!
http://www.st.com/content/ccc/resou...df/jcr:content/translations/en.CD00272622.pdf
Don't forget using them for positive AND ground circuitry!
Btw, Powerex Incorporated has switching mosfet modules with 177 micro ohm rds-on,,,,, so maybe there are other contenders on the market too….
Keep up the good work Ian
Best regards,
Alex
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