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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

    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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