Thor Boost Signup feeler thread

[NewBie]

Actually, for space reasons, everything but the electrolytic capacitors are SMD. Everything but the big stuff is either 0603 or 0805.

 

[JohnGault]

[ QUOTE ]
NewBie said:
I'm really torn on the kit deal, as it could be misassembled, solder bridge, etc. and I'd really hate for someone to buy one of these things only to have problems with it, which would make me feel really bad.

[/ QUOTE ]

I think the answer is that it's not really a "kit".

I assume you're going to guarantee that your assembled boards are at least going work.

If you put the boards & components into a bag (and at this point, if the price was right I'd consider 10) there would be no guarantee, expressed nor implied, what so ever. Even a bad part would be the recipients problem.

Simple /ubbthreads/images/graemlins/smile.gif

(ps - SMD's are No Problem for some of us)

 

[cheesehead]

Assembled boards are my vote if there is only one option. Again, thanks for doing this!

 

[NewBie]

Actually, each board will be tested before it is sent out, in an actual host. I'll be loading each one down with an additional load beyond what the host does.

 

[jtice]

Newbie,

Will you be making these limited to the 2X brightness, or the full 3X brightness?
I vote for the full 3X brightness, or corse. /ubbthreads/images/graemlins/wink.gif Unless it is majorly overdriving the bulb.
Its always nice to have the MAX light possible at your disposal.
As long as the light is still able to be dimmed down to a low setting (alittle lower than the stock thor would be nice)
Will the pot be included in the kit?

-John

 

[Sky]

Will we have a choice of either 2X or 3X?

 

[lasercrazy]

More importantly how will it hook up to the light?

 

[sunspot]

I'm in for one. As a drop in. How much does the bulb cost?

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[dabiscake]

any update on pricing?

 

[lasercrazy]

Everyone that adds themselves to the list PLEASE update the CURRENT list. /ubbthreads/images/graemlins/twakfl.gif

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[Topper]

Thank you Lasercrazy /ubbthreads/images/graemlins/happy14.gif

 

[NewBie]

If you look at the other thread, you'll see it is set to 15V. This is way over 2X and very near 3X. I've not seen a bulb die from this level yet, after many hours of runtime (with the soft start circuitry).

Those that have the knowledge can do whatever they want with the board once they get it. It is their property. You modify it and flash your bulb, don't come crying to me, go buy a new bulb.

The stock bulb is the Philips 12569 bulb, the high end Narva 100W H4 bulb barely beat it.

http://www.candlepowerforums.com/ubbthreads/showflat.php?Cat=&Number=763108&page=0&view=&sb=5&o=&fpart=3&vc=&PHPSESSID=

 

[jordan13195]

sign me up as well

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[/ QUOTE ]
Jordan13195 (1)

 

[NewBie]

Okay, figured I'd include the plots using one of the stock batteries and an old prototype board I did.

Keep in mind, this is running the Thor's Hammer (booster board name), at 15V to the bulb, or full output. At this discharge rate, the capacity of the stock battery drops to about 1/2. There are other batteries on the market, called a High Rate battery, such as the BB Battery HR9-12.

This setup is utilizing all the stock wiring and switch (somewhat lossy).

 

[4sevens]

what is the capacity high rate battery?

I would like to rig up a li-ion setup.
3 cells would be 10.8v - 12.6v
4 cells would be 14.4v - 16.8v

I can put my 18650 cells in parallel, each with 2.4ah
so the cells would share the load. These cells are small and light.
/ubbthreads/images/graemlins/grin.gif

Then for charging, I would use once of these circuits by
batteryspace:

http://www.batteryspace.com/index.asp?PageAction=VIEWCATS&Category=711

 

[jtice]

Ah 4Sevens reminds me of somethign I ment to ask,

What is the Max Vin the boost board can take?
I also plan to make a new batt pack for mine, and was looking at the 18650 cells also, though I dont know if they have enough mAh to handle this.

What kind of draw is the board pulling from the batts?
I think the 18650 cells can be charged as high as 2.2 amps, to the discharge is probably higher than that.

 

[4sevens]

[ QUOTE ]
jtice said:
Ah 4Sevens reminds me of somethign I ment to ask,

What is the Max Vin the boost board can take?
I also plan to make a new batt pack for mine, and was looking at the 18650 cells also, though I dont know if they have enough mAh to handle this.

What kind of draw is the board pulling from the batts?
I think the 18650 cells can be charged as high as 2.2 amps, to the discharge is probably higher than that.

[/ QUOTE ]

I meant to ask but forgot 😛

If the cells can't handle the load, then just start pairing them up.
Tweek did a graph with multiple discharge rates for the same 18650
cell /ubbthreads/images/graemlins/smile.gif (we went in on a bunch! I think he's got 60 of them!)

you can use 9 cells for a 10.8v-12.6 pack will put out 7.2A
in a cube space of 54mm x 54mm x 65mm - quite small.

Just add more cells for more capacity.

as far as charging... 0.5C - 1C is good.

 

[Aimless_b]

sign me up as well

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[NewBie]

Well, it depends on where you set the boost point. If it is set to 15V, then you'd not want the battery to be above 15V. This would not allow dimming though, dimming doesn't go below the battery voltage.

If you were putting out 15V to the stock bulb, the bulb would be drawing 7.86A. If your battery voltage under load was 12V, you'd be drawing 11 Amps from it. As the battery drains, you'd draw additional current. With most SLA gel cells under high current conditions, you can draw them to 9.0V with no issue (it quickly rises back up when the load is removed), so at the 9V input, you'd be drawing 14.6 Amps.

18650's probably won't handle this sort of load, since even the better ones typically will only take a load of 4.0 Amps maximum.

For this case with Li-ion cells, you'd probably want to do a buck.

 

[Topper]

Just fixin the list.

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