Recent content by larry

that's the one i have. Well, thanks a lot for the input. Will keep a look out for the temp. =D

I have an LPC-815 seated in an aixis module and attach to Odic Force Alloy Module Holder/Heatsink (12mm). I drive it at 245mA. Do my heatsink good enough and current low enough to give me a no duty cycle of laser fun?

This is my driver for my LPC-815. I am powering it with a non-regulated 12V 500mA power adapter. I wonder is this a safe driver to use and also able to pro long my LPC-815 life? Any comment on my driver is most welcome.

Anyone can tell me if my circuit is good as a driver? Am I better off with a non regualted power supply and regulated it with LM317? This is the lowest power source(12v 1.7A) I can find. I do not intend to drive using battery because I am trying to refrain from bring my laser out for show as any...

What a surprise, my glass lens appear to be blueish compare to the acrylic which appear to be clear white. So if my glass lens is coated for red then this will not be the factor that cause me own a led diode. =D

I am using a Glass Collimating Optics lens so I guess it is an uncoated lens. So I am better off for a AR coated glass lens for laser focusing modules(red/635-670nm) from Modwerx?

I do not really trust pot as it might fail and bye bye diode so I prefer to set it at a fix current. =D This is my circuit and thanks for the speedy reply. =D

Both my LM317 is equipped with a decent heatsink with a dimension of 35mm x 25mm x 10mm (WxHxD). I trying connect it to a test load and see how hot the heatsink can go with a 120mm fan cooling it down. After leaving it on for 5min, it is just warm.

My LPC-815 just went led. It have been working fine for the past 1 week. My driver was base on LM317 DDL circuit(I just add additional LM317 in front to lower voltage). My driver is powered by a switching mode power supply 12v 1.7A. Using 2 LM317 for my driver. The first LM317 lower the voltage...

It seems that 4 x 1.5v AA battery get drain up pretty fast on my setup. I plug in the power supply and it really shine. Is AA battery an ideal power source or I should try the 9v battery?

So if I remove the cube optic from the sled I will not be able to get the beam out right? Meaning it cannot reflect to the desire location. Is it possible to replace the cube optic?

Hi all, Let me introduce to my first >5mw laser. =D From left to right: 4 x 1.5v (AA) in series, 2 x LM317 (simple voltage and current regulator), a few resistor to control the voltage and current and lastly my laser diode at its home. =D I choose to have 2 LM317 so that I can any power...

First time here, I recently purchase Samsung SH-S223. I was able to setup a driver to drive it and the problem is the diode seem a little weird to me. This is my LM317 setup. My weirdo diode (at least it sit in a beautiful heatsink) My question is "Why is the top part of the diode...