Two LED constant current drive power control decomposition
Date:2011-06-20 11:26
Status:Be resolved
Question:admin
n you generate a comparison voltage, after amplification, to control the PWM signal, so this control can be very precise control of voltage. This control method requires a reference, but also an operational amplifier, if the base enough to accurately op amp magnification is large enough, then be very accurate. Similarly, do the constant is the need for a constant reference, an op amp, resistor overcurrent detection, as the signal, then the signal amplification, to control PWM, unfortunately now
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08/26 00:18