LED operating voltage
- Thread starter nizak
- Start date
- Status
gar
Senior Member
- Location
- Ann Arbor, Michigan
- Occupation
- EE
171017-0829 EDT
Put a Variac on the input and see what happens as you lower voltage on the input. Monitor voltage, current, power, power factor, and light intensity.
What do you mean by effective?
.
Put a Variac on the input and see what happens as you lower voltage on the input. Monitor voltage, current, power, power factor, and light intensity.
What do you mean by effective?
.
That would depend on the design of the driver. Some drivers may reduce the light output if the input voltage is reduced that much.
Other drivers may draw more input current (same power out with reduced voltage in means more current in).
The efficiency of the driver may be reduced at the lower voltage/higher current levels, and you will have a little more voltage drop in the branch circuit wires.
You can try Gar's suggestion, but if you are operating outside the drivers specifications, there is no guarantee 10 other lights will operate exactly the same as one you test. And there is no guarantee everything will remain the same for different ambient temperatures, and as other factors change.
Other drivers may draw more input current (same power out with reduced voltage in means more current in).
The efficiency of the driver may be reduced at the lower voltage/higher current levels, and you will have a little more voltage drop in the branch circuit wires.
You can try Gar's suggestion, but if you are operating outside the drivers specifications, there is no guarantee 10 other lights will operate exactly the same as one you test. And there is no guarantee everything will remain the same for different ambient temperatures, and as other factors change.
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