My new PHR-803T + balloon pop - Laser Pointer Forums

Xylicon · 07-05-2009, 05:41 AM

Just put my PHR-803T on my little test board and experimented with it.

I have it set at 100mA its pusling at 700Hz because of the last tests I was doing with other diodes, I just didn't feel like changing the circuit at the moment.

Here the video.

http://xylicon.com/misc/Balloon.wmv (lighted room)

http://xylicon.com/misc/Balloon%20+%20Beam.wmv (dark room, can kind of see the beam)

Jimmymcjimthejim · 07-05-2009, 05:51 AM

You know, lasers are meant to be pulsed! At that rate you should turn the mA up a little, around 120mA would be better. Also it looks like you aren't using a heatsink, so you should check the temperature of the module every so often to make sure it doesn't overheat.

k1kb0t · 07-05-2009, 06:18 AM

Great job, if you can turn up the frequency you'll probably get a higher output, Like Jim said you can go to 120mA CW with a PHR, and get a proper heatsink so you can up the duty cycle.

Jon

cust11 · 07-06-2009, 04:12 AM

I wouldn't mind getting my hands on a schematic for that pulse driver you have there

.

I am really impressed to see the distance you have on that balloon pop!

-Mike

Xylicon · 07-06-2009, 11:43 PM

Quote:

Originally Posted by cust11

I wouldn't mind getting my hands on a schematic for that pulse driver you have there

.

I am really impressed to see the distance you have on that balloon pop!

-Mike

Here is the schematic, its pretty much the standard LM317 driver powering the diode and a 555 timer setup pulsing a transistor to ground. I just threw that schematic together using Multisim, I was rather tired at the time so the pin-outs might not be entirely accurate but you get the concept.

Throw me some PMs if you have any more questions.

cust11 · 07-07-2009, 12:07 AM

Quote:

Originally Posted by Xylicon

Here is the schematic, its pretty much the standard LM317 driver powering the diode and a 555 timer setup pulsing a transistor to ground. I just threw that schematic together using Multisim, I was rather tired at the time so the pin-outs might not be entirely accurate but you get the concept.

Throw me some PMs if you have any more questions.

Thank you sir! I would really like to try out a pulsed PHR and I think this will give me the opportunity to do so! I just sent off my 156mA PHR to BCM to get power graphed and I may have a pulse circuit waiting for its arrival. Thanks!

-Mike

(+rep for the help

)

borgqueenx · 07-12-2009, 05:33 PM

how much mw is it?

Skylight · 07-13-2009, 10:55 AM

I may be wrong but i think that you may have a little problem finding a host that will fit your driver.LOL. Looks good. I would definetely consider having some sort of heatsink.

Skylight

cyclonite · 08-23-2009, 12:06 AM

Hi guys,

If I want to run the PHR-803T at say 110mA, what voltage should I use? I've got a PSU that allows me to adjust V and A at the same time.

Thanks.

07-05-2009, 05:41 AM	#1
Xylicon Junior Member Join Date: May 2008 Posts: 28 Rep Power: 0	My new PHR-803T + balloon pop Just put my PHR-803T on my little test board and experimented with it. I have it set at 100mA its pusling at 700Hz because of the last tests I was doing with other diodes, I just didn't feel like changing the circuit at the moment. Here the video. http://xylicon.com/misc/Balloon.wmv (lighted room) http://xylicon.com/misc/Balloon%20+%20Beam.wmv (dark room, can kind of see the beam) Attached Thumbnails

07-05-2009, 05:51 AM	#2
Jimmymcjimthejim Class 3R Laser Join Date: Apr 2008 Location: South Florida Posts: 1,425 Rep Power: 102	Re: My new PHR-803T + balloon pop You know, lasers are meant to be pulsed! At that rate you should turn the mA up a little, around 120mA would be better. Also it looks like you aren't using a heatsink, so you should check the temperature of the module every so often to make sure it doesn't overheat. __________________ Current Lasers: 8??nm: 1050mA DIY Micro Sized 658nm: 2mW keychain pointer - DIY 80mA/350mA switchable in Altoids tin - 300mA DIY Micro Sized 635nm: 5mW Focusable Z-Bolt 632.8nm: 10mW Hughes HeNe - 15mW Melles Griot HeNe - 1mW Melles Griot bare tube in a transparent project box 594.1nm: 4mW Meredith Instruments HeNe 532nm: 5mW Lyra-G5 - 70mW DIY by Wannaburn 445nm: DIY 650mA in Sonar II Host 405nm: DIY LG 10X at 330mA with Ehgemus host and Microboost - CNI GLP-405 70mW

07-05-2009, 06:18 AM	#3
k1kb0t Class 2 Laser Join Date: May 2009 Location: Tampa, FL Posts: 458 Rep Power: 4	Re: My new PHR-803T + balloon pop Great job, if you can turn up the frequency you'll probably get a higher output, Like Jim said you can go to 120mA CW with a PHR, and get a proper heatsink so you can up the duty cycle. Jon __________________ "Words when put into one form or another may unlock some ideal form. They need not, one cannot make another see he can only provide the stimulation that's helps the other to see for himself." - Plato, The Republic 405nm - Jayrob 4171 PHR w/ 405-G1 lens mod 660nm - Jayrob 4171 LPC w/ Meredith lens mod Transmissions - blog.kikbot.org

07-06-2009, 04:12 AM	#4
cust11 Class 2 Laser Join Date: Jun 2009 Location: Bowling Green, Ky Posts: 476 Rep Power: 4	Re: My new PHR-803T + balloon pop I wouldn't mind getting my hands on a schematic for that pulse driver you have there . I am really impressed to see the distance you have on that balloon pop! -Mike __________________ PHR-803T @ 156mA\|180mW (405-G-1 Lens) GGW Open can 6x 196mA (405-G-1 Lens) (metered results coming soon!) DL V-75 75mW Green handheld 150mW o-like in Ehgemus host (in progress) LOC Keychain mini @ 386mA (AixiZ acrylic) IPC class II/III solder certified Welcome to your new addiction.

07-12-2009, 05:33 PM	#7
borgqueenx Class 1M Laser Join Date: Jun 2008 Posts: 122 Rep Power: 3	Re: My new PHR-803T + balloon pop how much mw is it? __________________ My Laser Collection: Greenies: 10mw laser pen(crap laser, maby less then 10mw.) 30mw Romisen flashlight style. 30mw Laser pen with kaleidoscopic head. 50mw metal keychain. 100mw laser pen. 200mw green laser pen(actually about 150 ~175, does light a match) Reddies: 300mw very small laser flashlight style. (the king of my collection, by LikeItBright) Blu-rayz: 140mw Pocket Mini by darkarmyofone.

07-13-2009, 10:55 AM	#8
Skylight Member Join Date: May 2009 Posts: 35 Rep Power: 0	Re: My new PHR-803T + balloon pop I may be wrong but i think that you may have a little problem finding a host that will fit your driver.LOL. Looks good. I would definetely consider having some sort of heatsink. Skylight

08-23-2009, 12:06 AM	#9
cyclonite Class 1M Laser Join Date: Sep 2007 Posts: 231 Rep Power: 3	Re: My new PHR-803T + balloon pop Hi guys, If I want to run the PHR-803T at say 110mA, what voltage should I use? I've got a PSU that allows me to adjust V and A at the same time. Thanks.

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