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405 nm Diode dull?

wolfhunter9154

wolfhunter9154

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I recently purchaced a 150 mW laser doide and driver parts and it was working fine for a day but today I chenged the battery and when I did that the diode is dim now. (it was a brand new battery) any ideas?
 
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daguin

daguin

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wolfhunter9154 said:
I recently purchaced a 150 mW laser doide and driver parts and it was working fine for a day but today I chenged the battery and when I did that the diode is dull now. (it was a brand new battery) any ideas?
Click to expand...

Links to what you got?

Current setting (mA)?

Type of batteries?

What is it mounted in?

Peace,
dave
 
wolfhunter9154

wolfhunter9154

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Yes Itried a new battery. I measured the mA on the circuit with a voltage tester. It might be something in the circuit but it was working fine a few minutes before.
 
daguin

daguin

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wolfhunter9154 said:
Yes Itried a new battery. I measured the mA on the circuit with a voltage tester. It might be something in the circuit but it was working fine a few minutes before.
Click to expand...

Place your DMM in series with the battery and measure the current.

Peace,
dave
 
pseudolobster

pseudolobster

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wolfhunter9154 said:
What do you mean by DMM?
Click to expand...

Digital Multi-Meter. (a voltage/amperage/resistance tester)

Anyways, there's a few things that could have caused this... ESD, if you touched the diode pins without grounding yourself first, maybe you disconnected the diode momentarily when the driver was turned on, charging its capacitor to unsafe voltages, then when you hooked the diode back up it discharged into the diode, perhaps you shorted the resistor or potentiometer, sending the current up to 1500mA for a second, could be a reflection went back into the die causing catastrophic optical damage, or maybe it was just bad juju, and your diode is cursed.
 
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