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Old 07-22-2014, 10:57 AM #1
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Default Under voltage - Bad for M140 ?

Hello and greetings ! So I recently got cheapo china 445nm driver for M140 diode, and I added 1000uf 10v cap at the output, and it works great at 1.58 amps, but when I turn it off, laser still emits a very little light,it is like 10 times weaker than 1 mw red laser, You can see it only when you shine it on a dark surface. I can see it for about 2 seconds wich comes from capacitor as expected so My question is will this 2 second undervoltage will not cause any damage to diode ? Thanks in advance.



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Old 07-29-2014, 04:18 PM #2
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Default Re: Under voltage - Bad for M140 ?

Nope, no damage. You're right, just an output cap discharging.
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