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Misbehaviour of LED Dimming Circuit

Discussion in 'LEDs and Optoelectronics' started by vikas gupta, Feb 17, 2017.

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  1. vikas gupta

    vikas gupta

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    Feb 17, 2017
    Using the mosfet dimming circuit with MOSFET in series with led and driver and the mosfet circuit is working absolutely fine, as the waveforms say. BUT, I AM GETTING MUCH MORE CURRENT ON 10% PWM THAN ON 100% PWM ACROSS MY LOAD. IS IT THE PROBLEM OF LOAD OR THE DRIVER? I AM USING VTECH BIOTRON COMPANY'S DRIVER WHICH HAS OPTIONAL 0-10V DIMMING (WHICH i AM NOT USING). KINDLY EXPLAIN.
     

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