Red Laser Module
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How will a 100 mW red laser diode module unit that requires "250mA at 3V" work with les than 3V of power?
I am looking to make a red burning laser and want to use rechargable batteries. the laser requires "around 250mA at 3V". What would be my best battery choice. 2 AAA non rechargable, 2 AAA rechargible NiMH batteries, or a single 2V battery? If you can help out with this, thanks.
ps the link to the ebay diode and unit that I would use is (http://cgi.ebay.com/HIGH-POWER-RED-BURNING-LASER-DIODE-100-mW-MODULE-UNIT_W0QQitemZ300253036772QQihZ020QQcategoryZ4661QQssPageNameZWDVWQQrdZ1QQcmdZViewItem#ebayphotohosting)
I meant "single 3 volt" battery
voltage is not power.
Actually, it requires 3 volts plus at least 2 volts for a 8 ohm resistor.
so you need a 5 or 6 volt battery. You may get by with 4.5 volts, and a 6 ohm resistor, but you would run less risk of burning out the laser diode with 6 volts and a 12 ohm resistor.
Very important: Even a reflection from this laser can cause permanent eye damage. That means if the beam hits a shiny piece of metal and reflects out the window and hits a passerby in the eye, they can be blinded. Or you can be blinded.
When these are used in industry they are in a controlled room with no windows, and you are only allowed in if you are wearing the correct protective goggles.
Notice all the warnings and liability messages on that web page?
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