Contents
How do you find maximum current and voltage?
In our case, we can write that the maximum power is equal to the maximum voltage squared divided by resistance. And then, rearranging this equation to solve for 𝑉 sub max, we find it’s equal to the square root of 𝑃 sub max, the maximum power, times the resistor’s resistance. We’ve seen that maximum power is 10 watts.
How do you find the maximum current in a circuit?
Calculate the resistance from the average power and the rms voltage using equation 21-6. Then, from the resistance and rms voltage, solve for the rms current using Ohm’s Law (equation 21-2). Convert the rms current to maximum current by multiplying it by the square root of two.
How to calculate maximum AC power input current?
Input Current = Maximum Power/(Efficiency)(Power Factor)(Minimum Input Voltage)(√3) These input current calculations are for the worst case: assuming the unit is running at maximum power, operating at a low line condition and taking efficiency and power factor into account. Click here to download the pdf.
How to calculate minimum voltage of a capacitor?
Assuming a 5% ripple across the capacitor at minimum input voltage Δ v c = 0.1 ⋅ V in,min − V d + V o = 1.825 V, capacitor C 1 can be calculated as The voltage rating and type of this capacitor have to be chosen carefully. This capacitor carries both the input current and the output current.
What should cmaxun be for no nominal voltage?
1) cmaxUn should not exceed the highest voltage Um for equipment of power systems. 2) If no nominal voltage is defined cmaxUn = Um or cminUn = 0.90 × Um should be applied. 4) For low-voltage systems with a tolerance of +10 %.
How does input current relate to power factor?
Input Current = Maximum Power/ (Efficiency) (Power Factor) (Minimum Input Voltage) (√3) These input current calculations are for the worst case: assuming the unit is running at maximum power, operating at a low line condition and taking efficiency and power factor into account. Click here to download the pdf.