- Joined
- Nov 22, 2008
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Hi, this is my first post, so hi to everyone. Basically I think I've burnt out my diodes (a Red long open-can and an 803T). Thing is, I don't know why this has happened, and was wondering if anyone has any advice. I've been using a 317T based circuit driving at about 120mA for the blue, and not much more for the Red one. I've tested each change with my test load, (4 4N001s for Red, 6 for Blue), and it has been running fine since Thursday. This evening, I was powering it on, and after a few seconds I noticed my blu one was barely lasing at all. I disconnected it and checked current and voltage, both were fine. Then I hooked it up to my test load, and set up my red diode. It worked fine for a few seconds, then suddenly dimmed to barely-lasing. I checked the battery, about 7.2v, and changed it for a 8.6V wall plug. Same thing happened as the battery. any ideas, or suggestions for the future? By the way, the red one may have been damaged when I resoldered it yesterday, but both had been working fine on that evening, after resoldering. thanks in advance for your advice!