I'm trying to figure out the value (and wattage) for c and r in this circuit (with or without the inductor) connected to a 15 Amp 110v outlet. It's like a high pass filter but not looking for any cutoff frequency or voltage drop, just the 90° phase shift.
I'm not sure I understand, so would a 90° transient shift be T=90, then just figure out the values that sum to that?
Then used this calculator (https://www.digikey.ca/en/resources/conversion-calculators/conversion-calculator-time-constant) to find the time constant that equals 90 degrees, with a 1M resistor and 90uF capacitor, is that correct values to use? Do you know what wattage resistor I should use? I tried ohm's law, but it says I need a 1650 W, is that right?
Yes I want to make this for real, I replied another comment that didn't show up here yet (I think it said awaiting moderator approval), but I calculated 1M for the resistor and 90uF for the capacitor on a webite that showed that would give the time delay for 90 degree shift I believe, I'm not sure if that is right.
Thus, the transient response or a series RC circuit is equivalent to 5 time constants.This transient response time T, is measured in terms of τ = R x C, in seconds, where R is the value of the resistor in ohms and C is the value of the capacitor in Farads.
Thank you for the reply. The load is just the 0.00271H inductor (31.5ohms).
I think I miscalculated before, I figured it to be 4.7k resistor and 90uF capacitor, to make a delay of 4.2ms (0.0042s). I calculated the delay for a 90° shift using this website: sengpielaudio(.)com/calculator-timedelayphase(.)htm (sorry just remove the brackets, I don't think posting links is allowed on this forum), then I used this calculator: digikey(.)ca/en/resources/conversion-calculators/conversion-calculator-time-constant, to find c and r to equal the 4.2ms delay.
So this is not right?
marry roser
PermalinkThus, the transient response or a series RC circuit is equivalent to 5 time constants. ... This transient response time T, is measured in terms of τ = R x C, in seconds, where R is the value of the resistor in ohms and C is the value of the capacitor in Farads.
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Joined November 21, 2019 36Thursday at 02:40 PM