Meanwell Driver outputting voltage when off

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thekameleon
Posts: 137
Joined: Sat Feb 16, 2013 7:44 am

Meanwell Driver outputting voltage when off

Post by thekameleon »

I know this is off topic, but I figured many of you out there might have experience with the Meanwell LED drivers to power your LEDs. So my PWM signal is registering 0 volts, yet when I test the voltage coming out of the Meanwell drivers. I am registering anywhere from 14 to 21 volts on all of them... In fact sometimes, I get a really dim glow from my LEDs. Is this expected behavior?
rimai
Posts: 12881
Joined: Fri Mar 18, 2011 6:47 pm

Re: Meanwell Driver outputting voltage when off

Post by rimai »

That's the way constant current drivers work.
They vary the current instead of voltage.
Roberto.
thekameleon
Posts: 137
Joined: Sat Feb 16, 2013 7:44 am

Re: Meanwell Driver outputting voltage when off

Post by thekameleon »

Is there anyway then to make them truly turn off the LEDs or will I always have to deal with the dim glow?
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