It is critical to determine the optimum value for the current-sense resistor (RSENSE). Larger RSENSEvalues increase the series IR voltage drop and power loss; however, this would also minimize the effect of the offset voltage error, as shown in Table 2. For designs that ma...
At this point in the measurement system, waveform data from the modules is used to calculate any power quality parameter desired. Some of these calculations are fairly simple while others are complex calculations aggregated over several cycles, seconds, or minutes to determine the ultimate quality. ...
Y-type capacitors used in this way eliminate voltage offset between the two grounds at high frequencies. This suppresses high frequency radiation by dissipating noise currents between the two planes via a displacement current. Essentially, the Y-type capacitor acts like a filter that allows secondary...
What is power factor and why is it important? Learn how to calculate the power factor formula, each component of the equation, and why it matters.
Figure 2.DataCube (DCUBE) CR-PFM of a PMN-PT ferroelectric sample: (a) Typical force vs. time plots showing 30 ms hold segments where frequency is swept and highlighted pull-off points for adhesion map, (b) PFM Amplitude spectra from hold segment and Lorentzian fits used to calculate CR...
Table 15 in the ADS125H02 datasheet provides the conversion equations from input signal in volts to output code. First you need to calculate the full-scale input signal for your system, which for this ADC is VREF/GAIN. Assuming VREF = 2.5V and GAIN = 0.25, then this value is...
Using equation, you can calculate the total unadjusted error of the current-sense amplifiers shown in Table 1. The error from the common-noise rejection ratio is relatively small, and you can ignore it. The INA188 has the least error among the amplifie...
To calculate the amount of power a turbine can actually generate from the wind, you need to know the wind speed at the turbine site and the turbine power rating. Most large turbines produce their maximum power at wind speeds around 15 meters per second (33 mph). Considering steady wind spe...
The wattage of an appliance is determined from its voltage and amperage. You can use the yellow EnergyGuide label on your washing machine to determine the volts and amps it uses. Using the above example label, here's how you can calculate volts and amps: Translate energy consumption to watt...
How to Calculate Burden for PTs The process for PTs is similar, but PT burden is typically expressed in VA. Use the formula: Determine Secondary Voltage (V): This is the PT’s rated secondary voltage (e.g., 120V). Calculate Total Resistance (R): Sum the impedances in the PT’s seco...