Search results

Im curious what the power threshold is before one can start to see the beam from behind and to the side of the source. I see pics all the time of laser night shots where the beam is clearly visible from all angles. Are these shots taken with longer exposure times?

I built my first laser in a project box last week. It worked but it was big, heavy and ugly. I wanted to be able to have the laser in a compact flashlight style case. I quickly realized that the task would be difficult not just because it was all home built, but because I am using a LM317...

Setting up a test load for a burner diode (red). I am reading anywhere from 3 to 6 diodes. How many is it?

I am looking at using a kobalt flashlight as a new host and also use its stock power supply to drive a red 200mw diode. The flashlight accepts 2 x 3v cr123a lithium batteries. I am using a lm317 driver. Will these batteries drive the laser without any issues?

I have an OPEN can red diode from a DVD R burner 16x i believe. How far can you push these (mA wise) ? I guess the better question is how far can you push them AND have the diode last?

I am hoping you guys can help me because I am about ready to give up. I can't figure out what I am doing wrong. I checked my circuit using a test load of 4 diodes and a 1 ohm resistor. I checked mA across the resistor with my DMM and it is showing 160mA using a 6.5ohm resistor. I hook up the 16x...

Came from a LG 16x DVD Burner model GSA-H20L I am pretty sure the one on the right is the IR and the left is the LD Here is the sled Can anyone tell me what mA I should be able to run this diode at? Also, how the heck do you get these out of their factory heat sinks? Thanks!

Using the LM317 regulator circuit- Is a 9v battery supply to much voltage to the diode? I see that the AA size 3.7v lithium ion batteries are a popular choice. What is the actual number on these batteries? If i were to say go to radio shack to get them? If using the lithium batteries as an...

I have researched laws starting at the State level (Indiana) but can't find anything at the federal level regarding the construction of your own laser for personal use. Are there any restrictions? I noted some issues with importing lasers (from O-Like) and them getting confiscated at customs...

I just pulled apart a DVD burner from a desktop and pulled the laser diode out. The label on the burner says H-L data storage, Hitachi-LG Storage Inc. Model GH41N. It doesn't look like the normal 5.6mm can. How do you identify how much current it can take?

I have a blu ray diode from a magnavox player. I found the blu ray pin out sheet here on the forums and mine looks just like it. Pin at top, pin middle right, and bottom pin. The diagram shows the top pin as +, the middle pin not used, and the bottom pin as - . Like the diagram the middle right...

Another member on this forum has been very helpful, but he too can't figure out what is going on. I built a standard LM317 driver, cap size is 10uF, resistor size is 47ohms, input voltage is a 9v battery. Test load consists of 6 diodes in series with 1 ohm resistor, checking the mA (mV) across...

Title says it. Built it last night using a single resistor circuit. However, when i turn it on i am getting 8.5 volts LD Out. I attemped to check current using 6 diodes and a 1 ohm resistor in series as load, but not getting anything. Something doesnt seem right. I have included 2 pictures. One...

hi all. I am a laser noob and have been reading over the forums for the last few hours. I ran across a driver from a member here for use with blu ray diodes. The diode I am using is from a Magnavox Blu Ray player with 3 terminals on it. The circuit is from Daedal. The post is old and the radio...

I have been reading through the forums and would like to build my own laser from a blu ray diode. But I still have some questions. I pulled the blu ray diode and the red diode from a magnavox blu ray player. -how do I identify positive and neg? the red has four legs and the blu has 3 -I am...