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ArcticMyst Security by Avery
Can you power 4 803T's at 100ma each. With one 9V?
- Thread starter Midknight
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Re: Can you power 4 803T's at 100ma each. With one
Probably.
If you had 4 lavadrives at their (theoretical) 90% efficiency, that'd be 440mA being drawn from the battery... and from what I gather people have had no problem driving open can reds at 420mA plus an inefficient lm317t driver's draw, that'd be quite a bit more.
I can't seem to find any datasheets off hand for 9v alkaline batteries, but I'm absolutely positive a 9v nicad or nimh would have no problems delivering that kind of current.
As for what driver you'd use, it may be a better idea to use 4 drivers, since no bluray diode is the same, and all have slightly different voltage requirements, (not to mention I'm not 100% sure most drivers can supply the some 20v necessary to drive them in series.)
Probably.
If you had 4 lavadrives at their (theoretical) 90% efficiency, that'd be 440mA being drawn from the battery... and from what I gather people have had no problem driving open can reds at 420mA plus an inefficient lm317t driver's draw, that'd be quite a bit more.
I can't seem to find any datasheets off hand for 9v alkaline batteries, but I'm absolutely positive a 9v nicad or nimh would have no problems delivering that kind of current.
As for what driver you'd use, it may be a better idea to use 4 drivers, since no bluray diode is the same, and all have slightly different voltage requirements, (not to mention I'm not 100% sure most drivers can supply the some 20v necessary to drive them in series.)
Re: Can you power 4 803T's at 100ma each. With one
I know I would need to run one 100ma driver on each. But is there a way to draw out 400-450ma out of a 9V battery. Then distribute the power evenly to the 4 100ma modules? In theory I should be able to just hook up a 440ma lavadrive to the 4 100ma drivers. Wile the lavadrive is hooked up to the 9V... Make any sense?
I know I would need to run one 100ma driver on each. But is there a way to draw out 400-450ma out of a 9V battery. Then distribute the power evenly to the 4 100ma modules? In theory I should be able to just hook up a 440ma lavadrive to the 4 100ma drivers. Wile the lavadrive is hooked up to the 9V... Make any sense?
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Re: Can you power 4 803T's at 100ma each. With one
You could just stick a rkcstr driver on each and wire up all of the driver leads in parallel and you could run that off of a 9v battery. The 9v battery wouldn't last too long at that current though.
You could just stick a rkcstr driver on each and wire up all of the driver leads in parallel and you could run that off of a 9v battery. The 9v battery wouldn't last too long at that current though.
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Re: Can you power 4 803T's at 100ma each. With one
For starters, don't hook up the lavadrive to 9v, I'm pretty sure it will die instantly.
If you insist on a 9v battery, then a plain buck driver could give you the efficiency and input voltage range needed.
For starters, don't hook up the lavadrive to 9v, I'm pretty sure it will die instantly.
If you insist on a 9v battery, then a plain buck driver could give you the efficiency and input voltage range needed.
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Re: Can you power 4 803T's at 100ma each. With one
Eh?
I re-read that a couple times and I think we may have a misunderstanding of terminology here... the lavadrive would be the driver... what you just suggested is using 5 drivers, which would be silly and a waste.
I'm saying you'd probably need 4 lavadrives, running one laser diode off each. You can connect each of these in parallel with the battery (ie: each + wire for each driver connects to the same + terminal on the 9v, same for each - )
Running all the diodes in series (one diode's + connected to the other's -, and so on) would probably create problems, since each of the bluray diodes are slightly different - they haven't worked out the kinks in manufacturing these things yet.
Anyways, as far as max current draw for a 9v goes, I found a datasheet for a standard energizer 9v, which seems to state that an alkaline 9v should have no problems delivering 500mA, but will only last ~300mAh at that draw. (less than an hour runtime)
Midknight said:
Eh?
I re-read that a couple times and I think we may have a misunderstanding of terminology here... the lavadrive would be the driver... what you just suggested is using 5 drivers, which would be silly and a waste.
I'm saying you'd probably need 4 lavadrives, running one laser diode off each. You can connect each of these in parallel with the battery (ie: each + wire for each driver connects to the same + terminal on the 9v, same for each - )
Running all the diodes in series (one diode's + connected to the other's -, and so on) would probably create problems, since each of the bluray diodes are slightly different - they haven't worked out the kinks in manufacturing these things yet.
Anyways, as far as max current draw for a 9v goes, I found a datasheet for a standard energizer 9v, which seems to state that an alkaline 9v should have no problems delivering 500mA, but will only last ~300mAh at that draw. (less than an hour runtime)
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Re: Can you power 4 803T's at 100ma each. With one
9V are only rated for 25mA current. This won't work.
9V are only rated for 25mA current. This won't work.
Re: Can you power 4 803T's at 100ma each. With one
How many volts dose the rkcstr drive require to power a 803T at ~100ma? Each. If its over 3V, I don't think it'll work. Because I would need at least 12V.
I'm thinking the way I said before might be the better idea. What ever I run each blu ray at, either 100-120ma. I multiply that times 4 (400-480ma) and thats the main driver I will use. IT will be hooked up to the 9V. Then hooked up to a switch on the output end. Then all 4 of the other blu ray modules will be hooked up to the switch. My only concern is that the 400-480ma driver will not divide the power evenly to the other 4 modules (causing one of them to over heat. Or die).
styropyro said:
How many volts dose the rkcstr drive require to power a 803T at ~100ma? Each. If its over 3V, I don't think it'll work. Because I would need at least 12V.
I'm thinking the way I said before might be the better idea. What ever I run each blu ray at, either 100-120ma. I multiply that times 4 (400-480ma) and thats the main driver I will use. IT will be hooked up to the 9V. Then hooked up to a switch on the output end. Then all 4 of the other blu ray modules will be hooked up to the switch. My only concern is that the 400-480ma driver will not divide the power evenly to the other 4 modules (causing one of them to over heat. Or die).
Re: Can you power 4 803T's at 100ma each. With one
Eh?
I re-read that a couple times and I think we may have a misunderstanding of terminology here... the lavadrive would be the driver... what you just suggested is using 5 drivers, which would be silly and a waste.
I'm saying you'd probably need 4 lavadrives, running one laser diode off each. You can connect each of these in parallel with the battery (ie: each + wire for each driver connects to the same + terminal on the 9v, same for each - )
Running all the diodes in series (one diode's + connected to the other's -, and so on) would probably create problems, since each of the bluray diodes are slightly different - they haven't worked out the kinks in manufacturing these things yet.
Anyways, as far as max current draw for a 9v goes, I found a datasheet for a standard energizer 9v, which seems to state that an alkaline 9v should have no problems delivering 500mA, but will only last ~300mAh at that draw. (less than an hour runtime)[/quote]
I get that. And I don't want to have to use 5 drivers. But this way it would be a more steady current. Also a lot of people use 400ma+ drivers for their reds. Using either 2 AAA's, or 2 CR123's. And they get more then 1-Hr of life. Wouldn't my 9V battery last even longer? (And thats using all 5 drivers) As opposed to just hooking all 4 modules straight to the 9V battery.
pseudolobster said:
Eh?
I re-read that a couple times and I think we may have a misunderstanding of terminology here... the lavadrive would be the driver... what you just suggested is using 5 drivers, which would be silly and a waste.
I'm saying you'd probably need 4 lavadrives, running one laser diode off each. You can connect each of these in parallel with the battery (ie: each + wire for each driver connects to the same + terminal on the 9v, same for each - )
Running all the diodes in series (one diode's + connected to the other's -, and so on) would probably create problems, since each of the bluray diodes are slightly different - they haven't worked out the kinks in manufacturing these things yet.
Anyways, as far as max current draw for a 9v goes, I found a datasheet for a standard energizer 9v, which seems to state that an alkaline 9v should have no problems delivering 500mA, but will only last ~300mAh at that draw. (less than an hour runtime)[/quote]
I get that. And I don't want to have to use 5 drivers. But this way it would be a more steady current. Also a lot of people use 400ma+ drivers for their reds. Using either 2 AAA's, or 2 CR123's. And they get more then 1-Hr of life. Wouldn't my 9V battery last even longer? (And thats using all 5 drivers) As opposed to just hooking all 4 modules straight to the 9V battery.
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Re: Can you power 4 803T's at 100ma each. With one
How many volts dose the rkcstr drive require to power a 803T at ~100ma? Each. If its over 3V, I don't think it'll work. Because I would need at least 12V....
[/quote]
No, all you'd need is the driver voltage plus the laser voltage.. when running things in parallel (each + terminal connected to the same + terminal on the battery) they each get the same voltage but have to share the current. If they were in series they would require higher voltage. Also, (off the top of my head, sorry if I'm wrong as usual) the max current a lavadrive can handle is some 450mA.. I really wouldn't want to run 4 drivers plus loads off one lavadrive... It would be a waste of energy and pointless to do so, as well as giving the main lavadrive a really short lifespan.
It dose not have to be a 9V. I think it would be the better idea though. I could put two in there. They would have to go in the long way though.
This is what it looks like:
[/quote]
If you were going to hook two 9v batteries together, it'd be to increase the amount of available current (not voltage) by hooking them together in parallel (ie, the plus end of each battery connected together as well as the minus end of each battery connected together)... This would only be if one 9v wasn't able to provide the amount of current required, though any high end alkaline 9v, as well as any nickel cadmium or nickel metal hydride 9v would be able to provide at least 750mA for a while.
(on another note, the capacity of a 9v battery is determined by its cells. A 9v battery is comprised of 6, 1.5v AAAA cells (slightly smaller than a triple-A) connected in series (so that their voltage adds up to 9v).. each of those has only a max draw of some 400mA-2000mA depending on what chemistry of battery it is (alkaline vs nicad))
Midknight said:
How many volts dose the rkcstr drive require to power a 803T at ~100ma? Each. If its over 3V, I don't think it'll work. Because I would need at least 12V....
[/quote]
No, all you'd need is the driver voltage plus the laser voltage.. when running things in parallel (each + terminal connected to the same + terminal on the battery) they each get the same voltage but have to share the current. If they were in series they would require higher voltage. Also, (off the top of my head, sorry if I'm wrong as usual) the max current a lavadrive can handle is some 450mA.. I really wouldn't want to run 4 drivers plus loads off one lavadrive... It would be a waste of energy and pointless to do so, as well as giving the main lavadrive a really short lifespan.
Midknight said:
It dose not have to be a 9V. I think it would be the better idea though. I could put two in there. They would have to go in the long way though.
This is what it looks like:
If you were going to hook two 9v batteries together, it'd be to increase the amount of available current (not voltage) by hooking them together in parallel (ie, the plus end of each battery connected together as well as the minus end of each battery connected together)... This would only be if one 9v wasn't able to provide the amount of current required, though any high end alkaline 9v, as well as any nickel cadmium or nickel metal hydride 9v would be able to provide at least 750mA for a while.
(on another note, the capacity of a 9v battery is determined by its cells. A 9v battery is comprised of 6, 1.5v AAAA cells (slightly smaller than a triple-A) connected in series (so that their voltage adds up to 9v).. each of those has only a max draw of some 400mA-2000mA depending on what chemistry of battery it is (alkaline vs nicad))
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Re: Can you power 4 803T's at 100ma each. With one
Here, I drew a picture.
Here, I drew a picture.
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Re: Can you power 4 803T's at 100ma each. With one
hahaha good picture! ;D
hahaha good picture! ;D
GooeyGus
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Re: Can you power 4 803T's at 100ma each. With one
just remember the max voltage for the lavadrive is 5.5v
just remember the max voltage for the lavadrive is 5.5v
Re: Can you power 4 803T's at 100ma each. With one
I have to say I'm very touched that you took all that time to draw me that picture.
What I'm wondering though is witch one do I use? It can't be the first one. (I can't send 9V to each of those drivers. They will be fried. And at that rate, so will the battery).
And in the upper right corner, I'm only getting 1/4 of 9V to each. (2.25V to each Lavedrive). How many volts do the Lavedrives need, to operate at 100-120ma?
I do think your second idea will work. But I may need 12V. And I have 1-3/8" rounded by at least 5" long, space to install a battery. I just don't know what kind of battery to use. What is that one battery. It looks just like a AA, but it's a 3V?
I have to say I'm very touched that you took all that time to draw me that picture.
What I'm wondering though is witch one do I use? It can't be the first one. (I can't send 9V to each of those drivers. They will be fried. And at that rate, so will the battery).
And in the upper right corner, I'm only getting 1/4 of 9V to each. (2.25V to each Lavedrive). How many volts do the Lavedrives need, to operate at 100-120ma?
I do think your second idea will work. But I may need 12V. And I have 1-3/8" rounded by at least 5" long, space to install a battery. I just don't know what kind of battery to use. What is that one battery. It looks just like a AA, but it's a 3V?
