unterhausen
Enlightened
- Joined
- Jan 16, 2009
- Messages
- 275
I turned this light housing on my lathe. I'm still having problems with the lathe, and my tooling is crummy, so it's simple and boring. I use a two fish handlebar mount, which barely works, as usual.
I took the cable off of a car phone charger. It's a little long for a handlebar light. The light is a little long. I left a fairly large slug of aluminum in the center for heat dissipation purposes. The area in the back is big because the driver just doesn't fit into a round case very well. I hogged out a lot of aluminum for that. I would have liked to put some cooling fins on the case, but I was too lazy to figure out where they would fit. I felt like I as in a hurry making it, next one will be more interesting looking. Even with the driver/battery problems it worked really well for a single led. I used it in a 400k ride in pouring rain, so it has that going for it.
Here is my problem. I'm using the taskled/cutter CC5W-700/350/80. This driver has 5 connections. 12v high, 12v low, gnd, led +/- I have not modified my driver, which should mean it is 240/80mA dual current capable. I looked for a while and there is no indication of which voltage goes where. So I hooked battery - to gnd, and battery + to 12v high. I get a current that seems way out of whack. Haven't measured the led current, but with 12v, I get .5A, and with 7.5v, I get .75A (these are battery currents). which represents around 6 watts. I have one led on there, so I should be seeing considerably lower power drop than that, 4V*.240A = 1W, a little more considering the efficiency losses in the converter. So it looks like the driver is putting out over an amp to the led. I guess I'll have to measure the actual led current tomorrow.
This seems to be a slightly different version of the CC5w that taskled sells. Anyone have any knowledge of this driver, or do I have to reverse engineer?
I took the cable off of a car phone charger. It's a little long for a handlebar light. The light is a little long. I left a fairly large slug of aluminum in the center for heat dissipation purposes. The area in the back is big because the driver just doesn't fit into a round case very well. I hogged out a lot of aluminum for that. I would have liked to put some cooling fins on the case, but I was too lazy to figure out where they would fit. I felt like I as in a hurry making it, next one will be more interesting looking. Even with the driver/battery problems it worked really well for a single led. I used it in a 400k ride in pouring rain, so it has that going for it.
Here is my problem. I'm using the taskled/cutter CC5W-700/350/80. This driver has 5 connections. 12v high, 12v low, gnd, led +/- I have not modified my driver, which should mean it is 240/80mA dual current capable. I looked for a while and there is no indication of which voltage goes where. So I hooked battery - to gnd, and battery + to 12v high. I get a current that seems way out of whack. Haven't measured the led current, but with 12v, I get .5A, and with 7.5v, I get .75A (these are battery currents). which represents around 6 watts. I have one led on there, so I should be seeing considerably lower power drop than that, 4V*.240A = 1W, a little more considering the efficiency losses in the converter. So it looks like the driver is putting out over an amp to the led. I guess I'll have to measure the actual led current tomorrow.
This seems to be a slightly different version of the CC5w that taskled sells. Anyone have any knowledge of this driver, or do I have to reverse engineer?
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