paulzimm
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- Joined
- Jul 22, 2008
- Messages
- 288
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Hello, I am in the process of building a laser projector and I have two of these FlexModP3 drivers:
http://hacylon.case.edu/ebay/laser_diode/FlexModP3.php
One driver is used to power a 445 diode and the other will be used to power two LOC red diodes in series (each will get half the voltage). Now the FlexModP3 driver has a 1.5 volt drop (battery input versus output to LD) and I am currently using a rechargable lead-acid 6 volt battery which at full charge is just around 6.3 volts. I have tested this tonight and it works perfectly for my 445 diode because it keeps the output voltage just under 5 volts when pulling 1 amp. Tomorrow night I will test my two LOC red diodes in series with the other FlexModP3 driver.
Since the laser projector is for home use only, I don't want to always be charging the 6 volt battery and instead want to use an 'industrial grade' power supply like one of these:
5 Volt AC/DC Power Supplies, Low Power, 1 to 70 watts, Chassis and Enclosed
Problem is, almost all of these type of regulated power supplies are 5 volts. Will this work for me at 3.5 volts (5v - 1.5v drop) for my 445? I hear a lot about limiting the current on these forums but not too much about the voltage. Just how important is it that I give my 445 exactly 4.7 volts, and my LOC diodes 2.3 volts?
Any help is greatly appreciated!
http://hacylon.case.edu/ebay/laser_diode/FlexModP3.php
One driver is used to power a 445 diode and the other will be used to power two LOC red diodes in series (each will get half the voltage). Now the FlexModP3 driver has a 1.5 volt drop (battery input versus output to LD) and I am currently using a rechargable lead-acid 6 volt battery which at full charge is just around 6.3 volts. I have tested this tonight and it works perfectly for my 445 diode because it keeps the output voltage just under 5 volts when pulling 1 amp. Tomorrow night I will test my two LOC red diodes in series with the other FlexModP3 driver.
Since the laser projector is for home use only, I don't want to always be charging the 6 volt battery and instead want to use an 'industrial grade' power supply like one of these:
5 Volt AC/DC Power Supplies, Low Power, 1 to 70 watts, Chassis and Enclosed
Problem is, almost all of these type of regulated power supplies are 5 volts. Will this work for me at 3.5 volts (5v - 1.5v drop) for my 445? I hear a lot about limiting the current on these forums but not too much about the voltage. Just how important is it that I give my 445 exactly 4.7 volts, and my LOC diodes 2.3 volts?
Any help is greatly appreciated!
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