PERFECTIONIST SPEAKING...
Hi,
Yes, well manually that is.
A nice trick I saw at the Teres site is an accessory circuit that actually sensed when the circuit was loaded and than turns the charger off.
In that way it charges up when not in use and conversely gets out of the way when under load, i.e. when you listen.
Sounds like the best solution to me.😉
Hi,
Yes, well manually that is.
A nice trick I saw at the Teres site is an accessory circuit that actually sensed when the circuit was loaded and than turns the charger off.
In that way it charges up when not in use and conversely gets out of the way when under load, i.e. when you listen.
Sounds like the best solution to me.😉
Hi Frank,
Have you got a link? If the sensing circuitry doesn't interfere with the sound, why not? Would be for really lazy people, though, but who isn't 😉
Have you got a link? If the sensing circuitry doesn't interfere with the sound, why not? Would be for really lazy people, though, but who isn't 😉
Dankeschön...
The question is how do they do it...
One simple solution (not really sensing anything) I could think of:
I suppose you'll in any case have a switch between the batteries and the amp. So you could just use this to pull open some normally closed relays between charger and batteries. So switch position 1: Charger connected to batteries, amp off - position 2: amp on, charger disconnected
Does this make any sense?
The question is how do they do it...
One simple solution (not really sensing anything) I could think of:
I suppose you'll in any case have a switch between the batteries and the amp. So you could just use this to pull open some normally closed relays between charger and batteries. So switch position 1: Charger connected to batteries, amp off - position 2: amp on, charger disconnected
Does this make any sense?
Hi
For me, using battery power supplies tends to be some kind of perfectionism. This is only obtained with completely isolation all HI-FI components from mains and earth connection. My idea (just now only idea and few schematic on paper) is to modify CD-player for working with batteries, using passive preamp, and, at least, using power amp in class AB/B with average power (with PS +/- 24VDC). Switching scheme (with relays) will be
1. Batteries full, listening off - chargers off from mains and batteries, components off from batteries
2. Batteries charge, listening off - chargers on mains and batteries, components off from batteries*
3. Batteries xy, listening on - chargers off from mains and batteries, components on
I think about placing chargers, batteries, and amps in separating enclosures to avoid any influences.
*CD (all times on batteries) will be trigger to switching system on (on closure contact, or sensing
audio signal on amp input (like in powered subs))
regards
For me, using battery power supplies tends to be some kind of perfectionism. This is only obtained with completely isolation all HI-FI components from mains and earth connection. My idea (just now only idea and few schematic on paper) is to modify CD-player for working with batteries, using passive preamp, and, at least, using power amp in class AB/B with average power (with PS +/- 24VDC). Switching scheme (with relays) will be
1. Batteries full, listening off - chargers off from mains and batteries, components off from batteries
2. Batteries charge, listening off - chargers on mains and batteries, components off from batteries*
3. Batteries xy, listening on - chargers off from mains and batteries, components on
I think about placing chargers, batteries, and amps in separating enclosures to avoid any influences.
*CD (all times on batteries) will be trigger to switching system on (on closure contact, or sensing
audio signal on amp input (like in powered subs))
regards
I agree.
I have been thinking this through. Using a three position switch, On-Off-On, or similar, one could have the switch in 'listen' position which would open the relays to the charger and close the relays, open the charging circuit and the close the circuit for the battery supply to the component. Conversely, in charge mode, the opposite occurs. If using multiple batteries, in series, it becomes just a little more complicated but not undoable. From what I have read, you want to charge multiple 12 volt batteries in parallel to optimally maintain each one. I haven't had much time to work on this but as soon as I do, I will post a proposed layout and hopefully
a working system. I am still trying to finish my gainclones. Awaiting parts in the mail.
Vic
I have been thinking this through. Using a three position switch, On-Off-On, or similar, one could have the switch in 'listen' position which would open the relays to the charger and close the relays, open the charging circuit and the close the circuit for the battery supply to the component. Conversely, in charge mode, the opposite occurs. If using multiple batteries, in series, it becomes just a little more complicated but not undoable. From what I have read, you want to charge multiple 12 volt batteries in parallel to optimally maintain each one. I haven't had much time to work on this but as soon as I do, I will post a proposed layout and hopefully
a working system. I am still trying to finish my gainclones. Awaiting parts in the mail.Vic
vic said:
But then you have to provide power for the relays. Why not do it directly with a switch? One position engages the batteries to the device you're powering and the other engages the batteries to the charger.
se
Hi,
I prefer relays, and one central "controller" unit with, of course, IC remote (I was build something like this with RC5 receiver SAA3049). Controller can be powered from mains.
regards
I prefer relays, and one central "controller" unit with, of course, IC remote (I was build something like this with RC5 receiver SAA3049). Controller can be powered from mains.
regards
SE
That's true. But, what if you want to put batteries in series but charge them in parallel with a single charger per side? What do you think about something like this? The switch can run the relays which are fed either by the batteries themselves or from a cheap DC source (small transformer, rectifier).
That's true. But, what if you want to put batteries in series but charge them in parallel with a single charger per side? What do you think about something like this? The switch can run the relays which are fed either by the batteries themselves or from a cheap DC source (small transformer, rectifier).
Attachments
vic said:
Sure. That would work if you just have one charger. In my setup, I use a dual charger (a Patco Model 300) and just use a 4PDT switch to switch all four terminals of the batteries between the amp and the charger.
Of course if you're using more than two batteries in series to get say a +/- 24 volt supply, then things get a little more complicated. 🙂
se
Battery sound?
Hi, you tell much about battery supply.
BUT. is it worth the technical anf financial investment?
has anyone made experiences between a battery and conventinal PSU?
Some people say, that battery Supplied amps sound only bit better than conventional Psu- supplied amps, and thats the money not worth.
What do you think about that?
Is it true, that battery supply needs big amounts of Capacitors?
Greets,
Ralf
Hi, you tell much about battery supply.
BUT. is it worth the technical anf financial investment?
has anyone made experiences between a battery and conventinal PSU?
Some people say, that battery Supplied amps sound only bit better than conventional Psu- supplied amps, and thats the money not worth.
What do you think about that?
Is it true, that battery supply needs big amounts of Capacitors?
Greets,
Ralf
Battery supplies should not cost more than a PSU with a decent quality transformer. Batteries run around $20 each for 12V 7.2Ah. A three phase charger runs about $50.
SE would probably have more informative thngs to say about this than I do. He has much more experience. Maybe he could give his
Vic
SE would probably have more informative thngs to say about this than I do. He has much more experience. Maybe he could give his
Vic
vic said:SE would probably have more informative thngs to say about this than I do. He has much more experience. Maybe he could give his
Not much more to add really. You summed it up rather well. Though it would be fair to say that an AC power supply doesn't need to be replaced every few years (and PLEASE take your old batteries to an appropriate recycling center).
I prefer battery power to AC power but some of that preference comes about by just how silly I see AC power in the first place (though I agree that it's more practical where you need high power).
The day I finally went sane was the day I sat back and thought about what some go through to achieve the "best" AC power.
If you go balls out, you've got a dedicated AC line wired with specialty cable which connects to specialty AC outlets into which you plug specialty AC cords which then go into the line filter/conditioner/regenerator du jour, then more specialty AC outlets and more specialty AC cords and finally you're into the equipment chassis where you need high quality power transformers, rectified with high speed/FRED/Schottky whatever diodes and some snubber networks for good measure, then into a bank of high quality reservoir caps.
And even after all of that, you're left with only pseudo-DC. DC with a bunch of 100 or 120 Hz ripple and its associated harmonics riding on top of it. To get rid of that, now you have to add voltage regulators.
<center>
<img src="http://www.q-audio.com/images/noac2.jpg">
</center>
se
Re: Battery sound?
So far my only direct comparison has been with my Zen headphone amp. It's probably not a quantum leap, but still a very noticeable and worthwile difference.ralf said:
Yes, if you need a low PS output impedance, but not more so than an AC supply.
Re: Re: Battery sound?
Typical SLAs already have internal resistances well below 100 milliohms. Why would you need to add a big gob of capacitance?
se
Verbal said:
Typical SLAs already have internal resistances well below 100 milliohms. Why would you need to add a big gob of capacitance?
se
BATTERY SOUND.
Hi,
And nicely decoupled with high quality props too...'less you like to listen to lead acid?
Bye,😉
Hi,
And nicely decoupled with high quality props too...'less you like to listen to lead acid?
Bye,😉
Re: BATTERY SOUND.
How does one "listen to lead acid"? And what exactly are you "decoupling"?
se
fdegrove said:
How does one "listen to lead acid"? And what exactly are you "decoupling"?
se
Listen And You'll See..
Hi,
Ah..we've got a fish on the line?
Weren't you listening to the AC mains prior to changing your PSU for a battery supply?
Now you're listening to a battery supply, as simple as that.
Enjoy the popsicle,
Hi,
Ah..we've got a fish on the line?
Weren't you listening to the AC mains prior to changing your PSU for a battery supply?
Now you're listening to a battery supply, as simple as that.
Enjoy the popsicle,
Re: Listen And You'll See..
So you're just out for a cheap troll.
I thought trolling was frowned upon here?
se
fdegrove said:
So you're just out for a cheap troll.
I thought trolling was frowned upon here?
se
- Status
- Not open for further replies.