freedom2000
Newly Enlightened
driver modification --> TrustFire SSC P7-C 900-Lumen LED Flashlight (2*18650/17670)
Hi all,
After having tested and disassembled the driver of my Trustfire SSC P7 flashlight, I have tried to modify the driver.
The original idea found on this thread consists simply to put two AMC7135 1400 mA in parallel to achieve the full 2.8A current on the SSC P7.
From this idea, as I really wanted to have a multi mode flashlight I have used an old (dead) driver from which I have removed everything but the µcontroler and the capacitor used to enable memory.
Here is the result :
On the top, the 2 AMC boards are just soldered together and connected to the bottom pcb board to the pin 7 of the µcontroller allowing PWM to the VDD pin of the AMC7135
All this fits easilly into the head :
And now.... If I'd used the original 2*18650 batteries to power the driver, I would for sure have fried the driver...
as both the AMC7135 and the µcontroller are limited to 6.5V max...
So what I did is to use my "chemistry mixed" battery configuration already tested and explained on this thread : 1 Li Ion + 1 NiMh.
So here is the final configuration :
The Liion is in red (please use a protected Li ion with a smaller capacity than the NimH one This is very important see my previous thread to understand the danger for your Liion, your NiMh ...)
Note the PVC tube which is here to recover the difference of diameter of the NiMh compared to the Liion
Note also the piece of copper to be added as a filler to recover the lenght of the NiMh.
And the results ?
A very good new light even more powerfull than the original driver as you reach a full power of 2.9A at led side (the same as at tailcap side for this linear driver), 690 mA for Mid power (still brighter than a single Cree Q5) and only 50 mA for a very dim low mode.
Finally, I must say that this combo is quite interresting as you can get an extremely powerfull SSC P7 driven at full power and two other modes offering a much longer lifetime of the battery while also preventing to over heat the led. :twothumbs
JP
Hi all,
After having tested and disassembled the driver of my Trustfire SSC P7 flashlight, I have tried to modify the driver.
The original idea found on this thread consists simply to put two AMC7135 1400 mA in parallel to achieve the full 2.8A current on the SSC P7.
From this idea, as I really wanted to have a multi mode flashlight I have used an old (dead) driver from which I have removed everything but the µcontroler and the capacitor used to enable memory.
Here is the result :
On the top, the 2 AMC boards are just soldered together and connected to the bottom pcb board to the pin 7 of the µcontroller allowing PWM to the VDD pin of the AMC7135
All this fits easilly into the head :
And now.... If I'd used the original 2*18650 batteries to power the driver, I would for sure have fried the driver...
as both the AMC7135 and the µcontroller are limited to 6.5V max...So what I did is to use my "chemistry mixed" battery configuration already tested and explained on this thread : 1 Li Ion + 1 NiMh.
So here is the final configuration :
The Liion is in red (please use a protected Li ion with a smaller capacity than the NimH one This is very important see my previous thread to understand the danger for your Liion, your NiMh ...)
Note the PVC tube which is here to recover the difference of diameter of the NiMh compared to the Liion
Note also the piece of copper to be added as a filler to recover the lenght of the NiMh.
And the results ?
A very good new light even more powerfull than the original driver as you reach a full power of 2.9A at led side (the same as at tailcap side for this linear driver), 690 mA for Mid power (still brighter than a single Cree Q5) and only 50 mA for a very dim low mode.
Finally, I must say that this combo is quite interresting as you can get an extremely powerfull SSC P7 driven at full power and two other modes offering a much longer lifetime of the battery while also preventing to over heat the led. :twothumbs
JP
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