Jul 1, 2014 #1 G ghaste.siddhartha Newbie level 2 Joined Jul 1, 2014 Messages 2 Helped 0 Reputation 0 Reaction score 0 Trophy points 1 Activity points 11 Hi All, Please tell me how to convert power factor to voltage.
Jul 1, 2014 #2 KlausST Advanced Member level 7 Joined Apr 17, 2014 Messages 25,273 Helped 4,873 Reputation 9,767 Reaction score 5,566 Trophy points 1,393 Activity points 169,208 Hi, what input signals? 3 phase, single phase? sinusoidal shape or any shape? linearity, precision? What input voltages and what output voltage? purely analog design, or with ADC and ucontroller? Klaus
Hi, what input signals? 3 phase, single phase? sinusoidal shape or any shape? linearity, precision? What input voltages and what output voltage? purely analog design, or with ADC and ucontroller? Klaus
Jul 3, 2014 #3 G ghaste.siddhartha Newbie level 2 Joined Jul 1, 2014 Messages 2 Helped 0 Reputation 0 Reaction score 0 Trophy points 1 Activity points 11 Hi, Voltage and Current, single phase, sinusoidal shape, output from 0V for 0.5 lead to 5V for 0.5 lag,purely analog design
Hi, Voltage and Current, single phase, sinusoidal shape, output from 0V for 0.5 lead to 5V for 0.5 lag,purely analog design
Jul 3, 2014 #4 KlausST Advanced Member level 7 Joined Apr 17, 2014 Messages 25,273 Helped 4,873 Reputation 9,767 Reaction score 5,566 Trophy points 1,393 Activity points 169,208 Hi No linearity needed... Then you simply can use two comparators with threshold at 0V. XNOR both signals. Lowpass filter the XNOR output Levels of 0V up to 2.5V are valid 0V: cos(phi) = 1, 0 degree 2.5V: cos(phi) = 0, 90 degree The output is linear to degrees phase shift. 0 to 90 degree. Not linear to cos(phi). Klaus
Hi No linearity needed... Then you simply can use two comparators with threshold at 0V. XNOR both signals. Lowpass filter the XNOR output Levels of 0V up to 2.5V are valid 0V: cos(phi) = 1, 0 degree 2.5V: cos(phi) = 0, 90 degree The output is linear to degrees phase shift. 0 to 90 degree. Not linear to cos(phi). Klaus