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Laser diode

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Duce robot
(@duce-robot)
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Should I use a resistor when hooking up laser diode component with just the 2 wires coming out of it


   
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Duce robot
(@duce-robot)
Member
Joined: 5 years ago
Posts: 678
Topic starter  
Posted by: @duce-robot

Should I use a resistor when hooking up laser diode component with just the 2 wires coming out of it

May the Schwartz be with you


   
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(@pugwash)
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Posted by: @duce-robot

Should I use a resistor when hooking up laser diode component with just the 2 wires coming out of it

Not if you want to attach it to a Space Force robot to shoot down satellites!

? ? ? ? ? 


   
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(@pugwash)
Sorcerers' Apprentice
Joined: 5 years ago
Posts: 923
 
Posted by: @duce-robot

Should I use a resistor when hooking up laser diode component with just the 2 wires coming out of it

And now for something completely different!

A serious answer.

You need to know the forward voltage of the diode and the maximum current it will take. Get that from the datasheet.

Remember Kirkhoff's Law, all voltages must add up.

So V in the following equation will be Source Voltage minus Forward Voltage.

R = V/I

where R is resistance in Ohms and I is the maximum current in Amps.

This should answer your question!


   
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Duce robot
(@duce-robot)
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Posts: 678
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@pugwash

Awesome this worked it ends up being 6 volts ! Thanks 


   
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