Inside the JetBeam C-LE Driver Pics (DX Model)

[chimo]

One of the less than stellar copies of the JetBeam C-LE arrived today from DealExtreme. I decided to take one for the team and open it up.

The bezel was a real pita to open up - lots of glue including in and around the reflector.
After ensuring I could insert an object all the way to the bottom circuit board through the one of the wiring holes, I managed to gently tap out the driver can by inserting a flat ground finish nail and gently tapping it out.

I have not had a chance to research the components yet, if anyone would like to assist IDing the componets (especially the bottom boost board), please have at it. It would certainly help determine if the individual components can handle the voltage of a Li-ion.

Here are some pics.

Driver can.


The uC may be familiar to some.


A bit of a mess under the first board.


Underside of the uC board.


What else will fit? (Any board - here's a Piglet/FLuPIC). Probably enough room to sink the board in the head and add a tail switch.


Paul

 

[nerdgineer]

Re: Inside the JetBeam C-LE (DX Model)

How's the contact between the Cree and the heat sink look?

 

[chimo]

Re: Inside the JetBeam C-LE (DX Model)

How's the contact between the Cree and the heat sink look?

I haven't popped it off yet. The mini star was also a victim of the bezel adhesive. No thermal compound is visible.

 

[chimo]

Re: Inside the JetBeam C-LE (DX Model)

OK here's a quick look at the schematic. Nothing surprising - standard boost topology.

Components:
ZS20 is a 2A Zetex ZHCS2000 Schottky diode
BBP5B is the switcher controller
113H is a transistor
J476 are a couple of 47uF caps
the inductor is not marked

Vcc = Battery +
Out + feeds the uC board



It looks like this boards feeds the uC board. The uC switches (PWMs) a transistor (likely a MOSFET) for the output dimming and other features.

This is where Newbie's skills would be very handy!

 

[chimo]

I verified the operation of the little red board. It operates as an intelligent switch. I powered a Luxeon separately off it and it had the same switching functions (med-low-high-strobe-sos + "hidden mode").

I may try it with a minipro driver to see how well it works.

Paul

 

[koala]

Hey Chimo,

Your drawings are quite cute and clear. Thanks alot of the pictures. Very interesting.

 

[chimo]

Just a little update. I replaced the driver with a MiniPro driving a FLuPIC. It is brighter than the original and can take Li-ions.

It's a bit of a tight squeeze because I was a little lazy and didn't want to etch a larger MiniPro board so I used an extra battery contact board.

Paul

 

[nerdgineer]

What happened to all the pictures?...

 

[chimo]

I knew I should have taken pictures.

I just unsoldered the old boards from the can.

I created a new battery contact board (the minipro is a little too small). I was lazy and used a rotary tool to remove the copper instead of etching.

The minipro is upside down (like it would be in the old pills). The output of the minipro feeds the flupic and the flupic feeds the LED.

Beacause I used the extra board, it drops the light engine down a little, but the o-ring is still covered.

This DX CL-E host has a flat surface where the emitter sits so I did not have to do anything there.

I really like the form-factor of the C-LEs. What I would really like to see is a clicky switch on the end.

Paul

 

[matrixshaman]

Nice work and ditto the clicky! I'm still looking for the right kind of micro clicky that can be used in some lights.