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The scaling factor used, , is the stop band to pass band cutoff frequency ratios and is also known as the inverse of the "selectivity factor". [2] Since Elliptic designs are generally specified from the stop band attenuation requirements, Ω c {\displaystyle \Omega _{c}} , may be derived from the equations that establish the minimum order, n ...
Alpha cutoff frequency, or is the frequency at which the common base DC current gain drops to 0.707 of its low frequency value. The common base DC current gain is the ratio of a transistor's collector current to the transistor's emitter current , or α = i C i E {\displaystyle \alpha ={\frac {i_{C}}{i_{E}}}} .
In electronics, cut-off is a state of negligible conduction that is a property of several types of electronic components when a control parameter (that usually is a well-defined voltage or electric current, but could also be an incident light intensity or a magnetic field), is lowered or increased past a value (the conduction threshold).
In an electrical grid, the short circuit ratio (or SCR) is the ratio of: the short circuit apparent power (SCMVA) in the case of a line-line-line-ground (3LG) fault at the location in the grid where some generator is connected, to: the power rating of the generator itself (GMW).
In a synchronous generator, [1] the short circuit ratio is the ratio of field current required to produce rated armature voltage at the open circuit to the field current required to produce the rated armature current at short circuit. [1] [2] This ratio can also be expressed as an inverse of the saturated [3] direct-axis synchronous reactance ...
f L is the lower cutoff frequency (-3 dB point) of the analysed system, measured in hertz. f H is higher cutoff frequency (-3 dB point) of the analysed system, measured in hertz. h(t) is the impulse response of the analysed system in the time domain. H(ω) is the frequency response of the analysed system in the frequency domain.
Now that the 2021 NFL draft is over, many of the veteran players who are still without a team expect to start signing on with new clubs. And the NFL calendar offers teams more of an incentive to ...
Roll-off enables the cut-off performance of such a filter network to be reduced to a single number. Note that roll-off can occur with decreasing frequency as well as increasing frequency, depending on the bandform of the filter being considered: for instance a low-pass filter will roll-off with increasing frequency, but a high-pass filter or ...