Dsche
(Dsche)
1
Here’s the scheme

and here’s the board itself

and here’s it working

~20mm diameter, 2mm thickness, two independent branches up to 4x7135 each

may be used… oh, well, may be used in small-size flashlights with no-room for full-size driver like this


in stationary lighting, in car lighting etc
djozz
(djozz)
3
Nice board for a pill-less flashlight, it does not have a direct to core thermal path, does it?
Dsche
(Dsche)
4
djozz, no direct-connect, but huge copper polygon for better heatsinking
djozz
(djozz)
5
Yes, that looks good!
This board makes building a light from scratch a bit easier, no pill needed, just a ridge for the board to rest on does the job.
DanielM
(DanielM)
6
So it’s like, direct drive through 4-8*7135?
pommie
(pommie)
7
No not DD, its just the two banks of 7135’s, no mcu, two switches turning on/off the banks giving you two modes.
Cheers David
interesting…subscribed
those might be good for those printed hosts…make little mule lights…or even retrofit those wimpy 9 LED light deals from the auto parts store
Dsche
(Dsche)
9
pommie, not two only, it may be up to three: for example, one 7135 or two 7135 or all three together
pommie
(pommie)
10
Sorry for the confusion, banks or branches, same thing to me :bigsmile:
“two independent branches up to 4×7135 each”, you said it best.
Cheers David