Old 07-19-2008, 07:52 PM #17
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Default Re: Can you power 4 803T's at 100ma each. With one

Quote:
Originally Posted by Midknight
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?

IIRC the drlava flexdrive requires 2.5V - 5.5V. If the input drops below 2.5V it drops out.

Peace,
dave


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Old 07-19-2008, 11:05 PM #18
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Default Re: Can you power 4 803T's at 100ma each. With one

oh yeah, last night when I was giving this advice and drawing those pictures I neglected the fact lavadrives is particular are 3-6v... I was thinking of rkcstr's drivers which are 6-12v...

if you wanted to use lavadrives specifically, you'd need to run two sets of two, each set is connected in series, and the two sets are hooked up to the battery in parallel. that way each driver gets 4.5v.
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Old 07-20-2008, 12:06 AM #19
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Default Re: Can you power 4 803T's at 100ma each. With one

Forget lavadrives. and 9v batteries for that matter. Use 3 li-ions in series and rkstr's drivers.
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Old 07-20-2008, 04:21 AM #20
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Default Re: Can you power 4 803T's at 100ma each. With one

I'm going to go with 4 X 18650 3.7V rechargeable. So I will be getting a total of 14.8V. So at 3.7V going to each module. I would want to use lavadrives?

How long do you think the 4 18650's will last? Out of the 4 drivers, I'll be using around 400-500ma.
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