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Dummy loads.

Voldy356

Member
Joined
Aug 21, 2019
Messages
36
Points
8
Ok, educate me on dummy loads, please.
For instance, if I have a 1A driver, and my laser diode is supposed to work on 2.2v, how many diodes do I need in a dummy load?
How do I calculate these things, and what do I even need to calculate?
I know I should probably know these things, but I don't, for whatever reason.
 



Alaskan

Well-known member
LPF Site Supporter
Joined
Jan 29, 2014
Messages
11,748
Points
113
Not sure if you are here to get members to jump through hoops for something you can find online yourself, but here you go:

By your command....






 

paul1598419

Well-known member
Joined
Sep 20, 2013
Messages
16,233
Points
113
It maybe to your advantage to know that using a 0.1 ohm resistor instead of a 1 ohm for high current dummy loads decreases the voltage drop across you sense resistor by a factor of ten. This will help in keeping your loads easier to balance and the current is easy to read as the 0.1 ohm resistor will show your current as one tenth the voltage drop across a 1 ohm resistor.
 




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