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Gear / Technical Help => Remote Power => Topic started by: Nick's Picks on March 10, 2006, 07:42:26 AM
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i'm dyin' trying to build and external power source for my deck, and need to enlist the help of the experts.
My source is a 6v 5amp SLA.
my requirements are 5v 2amp currrent. any less voltage or current and it will not power up.
previous recomendations included the use of this: LM7805 voltage regulator , which will not work because it only outputs 1amp for current.
many other diodes i've looked at also have this limited rating.
I've got some rectifier diodes to try that will drop the current by 1v and have a 2.5amp current flow. that should work, but i'm not sure. the new SLA when fully charged is more like 6.5v, so the output w/one of these is still a little hot.
I need to speak with Doug. He recomended using RS diodes part number 4002, but I couldnt find any where I checked. So i need to look elswhere. I will try another RS today.
wondering if there is anyone out here in taperland that has successfuly constructed something?
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You should not need anything like 2 amps of current to run the 660. That's over 10 watts of power!
The 6 volt SLA doesn't sound like a sure bet either, since the 660 may expect 5 volt steady input, and SLA's taper off considerably as they discharge. You may be better off making a NiMH pack with four C (5AH) or D (10AH) cells. Those have steadier voltage.
If you do it, post about it. I thought of doing that when I first got my 660, but I found that runtime is acceptable using 2500 mah internal AA NiMH cells (7+ hours). So I haven't bothered with an external pack. I'd like to be able to record more than 7 hours but also feel likely to sell my 660 when the R09 is out, so I may never get around to a 660 pack.
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the 2amp requirement is what the Marantz AC/DC converter puts out. My unit was malfunctioning, so I can't comment on it working with any less current. Mine wouldnt, but then again....it was not functioning at full capacity.
no need for an external sled at all, but if you were to build one a 5ah 6v SLA...IMO, would run it the longest. Not only do you have all that stored energy in 5ah, but you have a long run time before the voltage would run down below 5v w/that.
Doug said the DC input guts could easily handle the 6v input from SLA w/o damaging or shortening the life of the product. Thats as good as gold to me.
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Why not just get a Juicebox (2amp 5v) from Todd R and hook a Walmart 9v to it? I believe he makes these now. Game over.
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that too
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What is the verdict on this powering solution. Can one use a ecocharge 6V SLA successfully? with the 660 and has anyone actually done it? I have actually been thinking about getting a 660, but I will only do it if I can use my BP50 eco's......
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What is the verdict on this powering solution. Can one use a ecocharge 6V SLA successfully? with the 660 and has anyone actually done it? I have actually been thinking about getting a 660, but I will only do it if I can use my BP50 eco's......
I think Oade said that would work... not sure if anyone has tried it yet though.
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i have used a 6v sla successfuly. no trouble there.
but...why ?
7 hours w/AA batteries. who needs to cart lead around?
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i have used a 6v sla successfuly. no trouble there.
but...why ?
7 hours w/AA batteries. who needs to cart lead around?
'Zactly... I just picked up 4 Sets of 2500 mah NiMH batteries which will be overkill.
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i have used a 6v sla successfuly. no trouble there.
but...why ?
7 hours w/AA batteries. who needs to cart lead around?
Damm, 7hours, how did I miss that one.
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That's probably 7 hours with 2500mah nimh aa rechargeables.
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That's probably 7 hours with 2500mah nimh aa rechargeables.
You know... for some reson I have a hard time paying attention to anything you're saying...
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That's probably 7 hours with 2500mah nimh aa rechargeables.
You know... for some reson I have a hard time paying attention to anything you're saying...
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Hahah, that's toooooo bad. I'm not changing my avatar!!
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That's probably 7 hours with 2500mah nimh aa rechargeables.
You know... for some reson I have a hard time paying attention to anything you're saying...
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Hahah, that's toooooo bad. I'm not changing my avatar!!
o your not are you?
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Ok, so I did. :-[
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Was wondering if you have found a good external battery pack for the PMD 660. Here are a couple of 5V rechargeable Lithium Ion battery packs that I found online.
http://focuscamera.com/focuscamerastore.asp?product=964589255&feeddate=06_01_2007 (http://focuscamera.com/focuscamerastore.asp?product=964589255&feeddate=06_01_2007)
Quick Charge- Around 90 Minutes, $99, doesn't say how many Watt hours of output is has, however, this unit is on back order. I am going to probably buy the one below or there is a 6V model as well. I guess if Doug Oade has said that it will handle a 6V input then, maybe I will get the 6V
(http://216.25.78.123/bigpics/samsung/sbp3605.jpg)
http://www.bixnet.com/mumiexbapaki1.html (http://www.bixnet.com/mumiexbapaki1.html)
(http://us.st11.yimg.com/us.st.yimg.com/I/laptopupgrade_1951_8064392)
$99
Key Features:
High capacity. Most Digital Cameras/Video Camcorder's standard batteries only have 5Wh~10Wh capacity. This battery has 44Wh (Watt-Hour) capacity. For reference, an AA battery has about 2.7Wh capacity (1.8Ah at 1.5V). This may help calculating your expected run time.
Ultra light weight design.
Compatible with
Devices which require 5V, 8.4V or 11V power supply, such as network routers, BiX Pocketsize USB or Firewire hard drives, BiX Slim USB or Firewire Optical Drives.
Compatible with following Cameras/video cameras: Sony, JVC, Panasonic, Fuji, Olympus, Nikon, Casio, Kodak, HP, Minolta.....
as well as most cameras or devices which require 5 to 12 volt power supply.
No memory effect. Can be recharged at any time regardless of the amount of discharge.
Built-in batery gauge which displays power level of the battery pack.
AC quick charger included. Temperature and over-voltage/current protection.
Universal camera cable included. Compatible with most all digital cameras/video cameras or equipment.
Can also be used as an external power supply for any device such as portable Radio, CD/VCD/ DVD player etc...which requires 5 to 12 volt power input.
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6v powers it fine, and is available MUCH cheaper or via DIY than a hundred clams
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i have used a 6v sla successfuly. no trouble there.
but...why ?
7 hours w/AA batteries. who needs to cart lead around?
Do you have directions on how to build this pack that you have? how much did it cost to build? how many Watt Hours does it produce?
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depnds on how much juice you need.
the easy way....pick a 6v RC pack and charger. that should do it fine.
or a 4 cell sled of any size.
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Do you have directions on how to build this pack that you have? how much did it cost to build? how many Watt Hours does it produce?
http://www.batterybarn.com/pr2310.htm
Works fine for my 660 & my R4. Little pricey but..........
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excellent battery. I have one too.
however, for small and cheap and effective...
1. good NiMH cells will run it better than 4 hours
2. Energizer e2 lithiums will run it for close to 6 hours
3. this would run it for a while too: http://tinyurl.com/38tz35
wired in parallel, these would run it for years probably. All for cheap cheap.
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Do you have directions on how to build this pack that you have? how much did it cost to build? how many Watt Hours does it produce?
http://www.batterybarn.com/pr2310.htm
Works fine for my 660 & my R4. Little pricey but..........
How long does it power your 660? I think I did my calculation right on that power runner and it puts out 36Watt Hours. 5Vx7.2Ah=36Watt Hours. I think I am going with the one I posted above, b/c for $5 more you get 44 Watt Hours and it charges in half the time. It says 3-4 hours for max charging and it does not have to be discharged. I have been running duracell 2600 mA rechargeables with a LaCrosse charger and that seems to work well, but since I am planning on going to festivals this summer, I wanted to have a power cell that can run almost all day. Can't wait to get it in.