CHANZONLED Driver 300mA (Constant Current Output) 18V-34V (Input 100-240V AC-DC) (6-10) x1W 6W 7W 8W 9W 10W Power Supply 300 mA Lighting Transformer Drivers for High Power COB Chips (Plastic Case)

I used this to repair an older led pole light. I think they are still being sold here under the name Torchstar.It has a good cast aluminum case that kept water out fine, so I'd like to keep it around. The original driver stopped working, and there were a few individual chips burnt out. Took me a lot of probing and checking to determine the way the leds were in the circuit. No information on the original driver. For this light, it was 75 leds, three parallel branches of 25 leds each. So around 75v drop and 450ma driving the three branches seemed about right. After replacing about four chips last night I hooked it up to the driver and it came on fine and all chips were on. Today I wired everything back into the lamp, cleaned off the old heat transfer paste, put new paste on, and put the repaired panel back into the lamp. I put power back on it, and it came on great again. Then it shut off after a few seconds. Then it came back on for a couple seconds. Then back off. Strobing. Great. I didn't have it on much last night and kicked myself for not just plugging it in for 10 min today to check it before I put it together with the heat transfer paste that is incredibly messy. I thought the new driver was not handling all the leds; and cutting out and back on. Miffed, and wondering about a return or if it was worth checking the voltage on it, I was about ready to chuck the whole thing into scrap metal. I then had another thought. Couldn't be that simple. I held my hand over the light sensor and plugged it back in. The board came on. And stayed on for 5 min. I took my hand off the sensor, a couple seconds later the light shut off. Then a couple seconds after that it came back on again. So DIY'ers, remember that dusk to dawn sensor that you cleaned up and checked weeks ago and made sure it worked? Well as luck would have it, it still works when you wire it back into the circuit. The light was coming on, bouncing around the white walls of my office, and then tripping the light sensor. Then the room, still lit but not bright enough apparently, would be dark enough to turn it back on and start the cycle all over. The driver works fine; fits good in that lamp I mentioned. No idea what kind of longevity it will have. I will probably keep this as a spare. Happy now.

Perfect for their LED Chips sets. This driver is doing great for my little project and I don't see any flicker from the LED chips. Very much smaller than I initially expected so I was happy with that as well. Fit my very small project chassis excellently.I'm actually driving five LED Chips wired through a magnetic coupler and there is no voltage or wattage change, constant voltage even through multiple conductors.

Received 50W 850nm LED and mounted it to a 50W sink using TG-7 heat sink compound and used a Noctua NF-A8 fan on a separate feed. Tested this with an adjustable switching regulated power supply set to a max voltage of 18V and max current of 1500mA. LED worked fine (verified with near IR camera). Purchased this supply to assure compatibility with the LED for normal use. On first use, it "killed" the LED which cost nearly double the price of the supply. LED now tests "open" and voltage at the terminals is at 53V!! So much for brand compatibility. I' have several high power visible Chanzon LEDs still working with homemade supplies.

I bought two of these to replace the LED drivers that went bad in an LED fixture I bought at Blue Box Store (not allowed to name competitors on Amazon). The OEM were 970mA-CC-30V. I can't find the exact replacement, so I tried these CC900mA-18-39V. They work just fine although slightly less bright. I hope these last longer than the OEM drivers. (Not allowed to insult China either, or accuse of counterfeit products, or report counterfeit products and scams).

If you don't know what you are doing and you just slap one of these bad boys in place of a broken power supply without knowing what voltage peramiters or current draw you need, it may make your led blink, kill your led, just plain not working, or work for a couple seconds then poop out. If you notice a lot of the one star reviews have a lot of these problems or they are someone actually measuring the output and being mad it's plus or minus 5 or 10 percent(which is common industry standards). It's a very well priced constant current power supply just do the research, take your measurements and make sure you are buying the appropriate size. I have bought six of these transformers and each is working perfectly fine.

Easy to install, worked perfectly to repair expensive bathroom vanity light with 3 LED bulbs. Nothing worse than to buy an expensive vanity light only to have it fail shortly after installation...well this is the economical solution. Just remove your light fixture and match the original power supply specs. Solder or use wire nuts to attach wires and a piece of double sided tape or hot glue to attach power supply to fixture, reinstall and you're good to go.

Doesn’t flicker which is good but has a terrible delay of about a second when you turn the light on.

After taking time to make certain the voltage specifications were correct as a replacement part, I ordered this unit.It worked. Now my light fixture is working again.