Recent content by Hodajii

Well the diode was not in contact with the board when my cap was charged and I almost connected it. Thats a close call. BUT! This was a learning experience and my next 445nm will be made in an ESD protected area and I now have the know how. I will now start to work with my IR/Red diodes.

I had one close call with the cap when I detached the diode wires from the board but I managed to short it in time (I guess) after the diode died. I think I destroyed another diode(again) with static... Glad I still have healthy eyes tho ^^

Yea... I think its a toast now. I had it running for 10 minutes and it was warm to hand and dim like my semi-dead blu-ray. DAMN it was expensive! I even bought safety glasses for this one. The diode was never working right. My first try was with ~500mA and it did the same thing: few seconds...

now I've got 3*0.47ohm 5Watt resistors in series and the laser worked for 10 seconds before dimming again. The voltage drops but much slower... No parts heating up Edit: I measured the current and it's still stable. With these resistors 890mA which should be enough for a bright light rather than...

So I need higher wattage resistors. My multimeter is very high quality and it's wires give 0.1ohms (checked) and I added it to the reading I got from the resistors earlier. The LM317 is not heating up because I've got a huge heatsink for it. The battery is from an airsoft gun (I'm aware that a...

5*4.7ohm 0.25W resistors in parallel. Attached to the board they give 1.6ohms in total. Checked and double checked.

I mean my 5 0.25W resistors make ~1.2ohm in total. I've measured everything and my current is stable ~1.2 amps but the voltage drops rapidly when I turn the laser on.

I recently built a lab style 445nm laser @ 1.2A but as I turn it on the voltage starts to drop rapidly and the laser dims because of it. I use LM317 and a PC power supply 12V rail. Same happens with a 9V 800mAh battery. Current stays stable but the voltage drops. The circuit I'm using is...