E = IZ | P = IE |
E = volts
I = current in amps
Z = impedance or resistance in ohms
P = power in watts
E_{P} = primary voltage
I_{P} = primary current in amps
E_{S} = secondary voltage
I_{S} = secondary current in amps
X_{C} = capacitive reactance in ohms
F = frequency in hertz
C = capacitance in farads
X_{L} = inductive reactance in ohms
F = frequency in hertz
L = inductance in henrys
F = frequency in hertz
L = inductance in henrys
C = capacitance in farads
L = inductance of coil in microhenrys (µH) |
L = inductance of coil in microhenrys (µH) |
L = inductance of coil in microhenrys (µH) |
T = AH |
L = length of wire in feet
D = outer diameter of coil form in inches
H = height of windings in inches
A = number of turns per inch
T = total number of turns
B = thickness of wire in inches
C = capacitance in picofarads
D_{1} = outside diameter of toroid in inches
D_{2} = diameter of cross section of toroid in inches
This equation courtesy Bert Pool.
C = capacitance in microfarads
K = dielectric constant
A = area of each plate in square inches
N = number of plates
D = distance between plates in inches (thickness of dielectric)
C = capacitance in microfarads
K = dielectric constant
D = diameter of jar in inches
H = height of jar in inches
T = thickness of jar in inches
E_{RMS} = RMS voltage
E_{P} = peak voltage
F = firings per second (hertz)
R = motor RPM rating
E = number of rotary electrodes
S = electrode speed (MPH)
R = motor RPM rating
D = diameter of electrode placement circle (inches)
Capacitance | Inductance |
J = 0.5 V^{2} C | J = 0.5 I^{2} L |
I stated peak values of V and I because I want to emphasize not to use RMS values. The energy stored at any given time is of course: J(t) = 0.5 [V(t)]^{2} C and J(t) = 0.5 [I(t)]^{2} L.
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