Search results

Hello, to bring this thread to an end. As I wrote before, X-Wossee will send me a new driver as refund. It is highly probably, that the driver was defect just from beginning. Although it is not known exactly,how the diodes died, DTR gave me a full refund. That was very gentle and I did not...

Hello, attached you will see a photo of my test device running at 250 mA. It is battery powerd with two 18350 cells. I took a used plastic box, so the look is not very nice. best regards Edgar

Hello, thank you, I was not sure sure if the conversation is public. best regards Edgar

Dear Paul, this collet type heat sink is only made for testing diodes. Sso they will only run for seconds. With 250 mA, the heat sink did not even get warm. I could, of course, build a perfect heat sink, but this device works well for his task. But I have another question. I could not find how...

Hello, as promised, my first collet 5,6 mm heat sink for dide testing. I use it together with my laser diode test device. The bore is 5,60 mm. The diode can be pressed in with finger force and than the M4 screw will fix the diode in the collet. So there is no need for pressing the diode and no...

Hello, laser color is so funny. Whenever I fire my 488 nm Laser, it looks babyblue to me. As soon as I run my 450 nm laser beside the 488 nm laser, it looks greenish blue and remains so for some minutes, even when I stopped the 450 nm laser. I think, this is only one effect that shows us, how...

Hallo, I am not frustrated. I only lost money for nothing. Yes, I will give the sharp diodes a second chance. But I will go to holydays in a week. So I can not order anything from US or China at the moment. Yesterday, I made my first attempt to anodize aluminum. The result looks good, but now...

Hello, I ordered some Mitsu 500 mA 638 nm from a chinese dealer beginning of this year. After 3 months I got tired of waiting and cancelled my order. The dealer wants a 5 star note from me before he would send the money back. That was the time when I called in Ebay and everthing was fine...

hello, I will take a photo, when the tester is finished. I do not use any capacitor in this tester. I also showed pictures of the current from an oscilloscope from such a Driver during power switching on and off in annother thread. The switching is very smooth, no Spikes. This driver will...

Hello, at the Moment I build a laser Diode tester from LM317 IC with 3 current steps from 120 mA to 240 mA. I will power the tester with a 18350 cell and magnetic contacts. Power on is made with a push button to run the uncooled Diode only for the split of a second. I am waiting for the IC test...

Hello, yes POM is so much nicer to turn on the lathe then PVC and it is cheap. best regards Edgar

Hello, I had good conversation with X-Wossee. He will send my a new driver. best regards Edgar

Hallo thrinh hong phuoc, I think, you did not read my answers well. It is not important what you think about what I may mentioned! Just read what I wrote in my last answer. Also, I did not like what you wrote about my abilities. As you are not direct involved into this story, you should keep...

Hello, this was a really long answer. But the story is very short. The driver did not work proper just from the beginning. With 4,2 V input, there is only 1,2 Volt output. That is not enough to drive the laser diode or my 4 diodes dummy load. So the resulting current is approx. zero. So it is...

-Hello, I wired the driver again and tested it with a 4 diode dummy load. The power input was 4,2 V with no current limitation. The output was 1,1 V, zero mA. this driver is dead! I finished my laser diode test stand with a lm 317 IC set to 125 mA. It works great with the the IC socket for the...

Hello, attached some photos of the driver. I am also in contact to x-wossee. Some contacts of the IC look poor. best regards Edgar

Hello, the Driver is an ACS500SE. It also will not work with my dummy load. I am not sure, if x-wossee tested every Driver he shipped. Do you like to see Pictures of the Driver, is that correct? I will check the Driver today with my USB microscope. Then, i will wire up the Driver again with my...

Hello. it was late last night, so let me resume what happens. I got a brand new Diode from DTR and a brand new 500 mA laser Driver from x-wossee. I did not check the laser Driver with a dummy load, because they normaly are adjusted below 100 mA. So I connected the Driver to the laser Diode...

The driver I used was dead after the first trial. I tested it after that with a dummy load. I connected the diode to a laboratory power supply with the power on to avoid spikes from switching. The voltage looks normal and I could increase the current, but the diode loóks dim like a LED. I can...

Hello, but the DTR back halfs will not touch the back of a full pressed diode. I checked this. What is more confusing to me is the fact, that the sharp diodes from other seller have 3 pins...