dc resistance การใช้

• Losses occur during this movement that can be measured as the internal DC resistance.
• ESR is much smaller than DC resistance.
• However, the aluminium shield had a high DC resistance and the steel core an even higher one.
• At higher frequencies, the AC resistance of a conductor can easily exceed ten times its DC resistance.
• The humbucking pickups used in the Contemporary models have a DC resistance which is approximately 7.6 kilohms.
• The single coil pickups used in the Contemporary models have a DC resistance which is approximately 5.6 k?.
• The Deluxe features 2 Seth Lover-designed P . A . F . humbucker typical DC resistance of 9 k? ).
• However the better conductor will show a higher ratio between its AC and DC resistance, when compared with a conductor of higher resistivity.
• In medium to high loads, the DC resistance of buck converter switching elements tends to dominate the overall efficiency of the Buck Converter.
• The VH-1 pickups from 1987 onward are approximately 8.2 k? DC resistance, have ceramic magnets, and are not wax potted.
• This internal DC resistance R i should not be confused with the internal AC resistance called Equivalent Series Resistance ( ESR ) normally specified for capacitors.
• For example, the DC resistance of a conductor depends upon the conductor's length, cross-sectional area, type of material, and temperature.
• Because of its lower electrical conductivity, aluminium wire requires a 1.6-times larger cross sectional area than a copper wire to achieve comparable DC resistance.
• The AC load line is a straight line with a slope equal to the AC impedance facing the nonlinear device, which is in general different from the DC resistance.
• The DC resistance of the cable limits the length of the cable for low data rate applications by increasing the noise margin as the voltage drop in the cable increases.
• The AC resistance often is many times higher than the DC resistance, causing a much higher energy loss due to ohmic heating ( also called I 2 R loss ).
• Note that for " pure resistances " ( imaginary devices that have no capacitance or inductance, just resistance ), their impedance at any frequency is the same as their dc resistance.
• When driving light loads, however, the effects of DC resistances are reduced and AC losses in the inductor, capacitor, and switching elements play a larger role in overall efficiency.
• The early VH-1 pickups, starting in 1983 ( installed in Burnys from 1985 to 1987 ) are approximately 7.5 k? DC resistance, are handwound, and have alnico magnets.