DiY LEDs - How to Power Them

Rocket Soul

Well-Known Member
Hey guys. Im looking at getting some advice on low amp, +48V drivers, with dimming and if possible on/off via PWM. Most likely the driver will power 3 separate parallel strings with 0-100mA in each string so looking for something with approx 300mA max, even lower would be better cause i really think ill never be over 40mA per string, so 120mA in total.
 

Rocket Soul

Well-Known Member
Hey guys. Im looking at getting some advice on low amp, +48V drivers, with dimming and if possible on/off via PWM. Most likely the driver will power 3 separate parallel strings with 0-100mA in each string so looking for something with approx 300mA max, even lower would be better cause i really think ill never be over 40mA per string, so 120mA in total.
Forgot to tag some people:
@Barristan Whitebeard has schooled me on drivers a few times
@SupraSPL and @Randomblame are better than google whem it comes to led.

Anyone has an idea? Maybe with a dc to dc driver?
 

guy_incognito251

Well-Known Member
They can dim to off using a PWM control signal (2.5V to 6V PWM for the LDD-H) - the output is PWM when dimmed.

They are DC to DC converters though so you will need a constant voltage supply to power them. The LDD-300H can output up to 52V at 300ma - it needs a constant voltage input at least 3V higher than the output voltage (max input voltage is 56V). They are most efficient when there is a small difference between the input and output voltage.

https://www.meanwell.com/webapp/product/search.aspx?prod=LDD-H
 

Rocket Soul

Well-Known Member
They can dim to off using a PWM control signal (2.5V to 6V PWM for the LDD-H) - the output is PWM when dimmed.

They are DC to DC converters though so you will need a constant voltage supply to power them. The LDD-300H can output up to 52V at 300ma - it needs a constant voltage input at least 3V higher than the output voltage (max input voltage is 56V). They are most efficient when there is a small difference between the input and output voltage.

https://www.meanwell.com/webapp/product/search.aspx?prod=LDD-H
Thats the ticket...
 

Rocket Soul

Well-Known Member
I’ve emailed them twice already just have t heard back yet. I imagine they get lots of email

This is what you want
 

Yesyes3000

Well-Known Member
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