pump diode current?

• Nov 11, 2008

• #1

C

carulli

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a while back I broke the driver on my 55mw green and now that the flexdrives go up to 700ma I thought maybe that would be enough to power the pump diode, the laser is a 55mw green old style wicked laser. what do you think I should drive the diode at?

 

• Nov 11, 2008

• #2

Jimmymcjimthejim

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If I remember correctly, Flexdrives CANNOT be used to drive an infrared pump. Why? Because IR diodes use about 1.8-2 volts, and the Flexdrive can't boost that low of a voltage.

 

• Nov 11, 2008

• #3

diachi

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Jimmymcjimthejim said:

If I remember correctly, Flexdrives CANNOT be used to drive an infrared pump. Why? Because IR diodes use about 1.8-2 volts, and the Flexdrive can't boost that low of a voltage.

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They don't boost to that voltage, they buck from the supply voltage down to the required voltage.I don't know what to run that diode at though, it's probably between a 200 and 500mW pump, so you'll want a current between 300 and 650mA roughly.

-Adam

-

 

• Nov 12, 2008

• #4

Cyparagon

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If one were to add a silicon diode in series with the laser diode, the draw voltage would be 2.4 to 2.6V - more in the range of a red diode as far as the driver sees it.

 

• Nov 12, 2008

• #5

C

carulli

Guest

thanks guys ill ask dr lava what he thinks could be done.