Steady-State Analysis of Single Phase A.C. Circuit
... denote its voltage value as being 10 volts RMS. The qualifier “RMS” stands for Root Mean Square, the algorithm used to obtain the DC equivalent value from point on a graph (essentially, the procedure consists of squaring all the positive and negative points on a waveform graph, averaging those squar ...
... denote its voltage value as being 10 volts RMS. The qualifier “RMS” stands for Root Mean Square, the algorithm used to obtain the DC equivalent value from point on a graph (essentially, the procedure consists of squaring all the positive and negative points on a waveform graph, averaging those squar ...
Technician Question Pool Effective July, 2003
... T1A05 (A) [97.113a4, 97.113e] When is an amateur station authorized to transmit music? A. Amateurs may not transmit music, except as an incidental part of an authorized rebroadcast of space shuttle communications B. Only when the music produces no spurious emissions C. Only when the music is used to ...
... T1A05 (A) [97.113a4, 97.113e] When is an amateur station authorized to transmit music? A. Amateurs may not transmit music, except as an incidental part of an authorized rebroadcast of space shuttle communications B. Only when the music produces no spurious emissions C. Only when the music is used to ...
30A - SynQor
... This is the primary reason that the PowerQor converter has such high efficiency, even at very low output voltages and very high output currents. Dissipation throughout the converter is so low that it does not require a heatsink for operation. Since a heatsink is not required, the PowerQor converter ...
... This is the primary reason that the PowerQor converter has such high efficiency, even at very low output voltages and very high output currents. Dissipation throughout the converter is so low that it does not require a heatsink for operation. Since a heatsink is not required, the PowerQor converter ...
Audio Transformers - Jensen Transformers
... As shown in Figure 5, when there is no load on the secondary of a transformer and an ac voltage is applied to the primary, an excitation current will flow in the primary creating magnetic excitation flux around the winding. In theory, the current is due only Figure 5 - Excitation Current to the indu ...
... As shown in Figure 5, when there is no load on the secondary of a transformer and an ac voltage is applied to the primary, an excitation current will flow in the primary creating magnetic excitation flux around the winding. In theory, the current is due only Figure 5 - Excitation Current to the indu ...
TPS40052 数据资料 dataSheet 下载
... The inductor value determines the magnitude of ripple current in the output capacitors as well as the load current at which the converter enters discontinuous mode. Too large an inductance results in lower ripple current but is physically larger for the same load current. Too small an inductance res ...
... The inductor value determines the magnitude of ripple current in the output capacitors as well as the load current at which the converter enters discontinuous mode. Too large an inductance results in lower ripple current but is physically larger for the same load current. Too small an inductance res ...
ADM3202 数据手册DataSheet 下载
... input levels and translate them into 3 V logic output levels. The inputs have internal 5 kΩ, pull-down resistors to ground and are protected against overvoltages up to ±30 V. Unconnected inputs are pulled to 0 V by the internal 5 kΩ, pull-down resistor. This results in a Logic 1 output level for unc ...
... input levels and translate them into 3 V logic output levels. The inputs have internal 5 kΩ, pull-down resistors to ground and are protected against overvoltages up to ±30 V. Unconnected inputs are pulled to 0 V by the internal 5 kΩ, pull-down resistor. This results in a Logic 1 output level for unc ...
... regarding system stability. The medium vectors produce NP current that mostly has the same direction because of this harmonic. For example, if the initial phase of this harmonic is +90º, the current ib is mostly positive during the time that the reference vector is in the first sextant (Fig. 6.5). A ...
Parallel DCMs
... DCMs in parallel is to remap that same load line over a higher current range, with no derating. Current sharing between DCMs is automatically implemented. It is dependent on the individual DCM’s output setpoints and load lines. Good load sharing among DCMs in an array is generally desired; however i ...
... DCMs in parallel is to remap that same load line over a higher current range, with no derating. Current sharing between DCMs is automatically implemented. It is dependent on the individual DCM’s output setpoints and load lines. Good load sharing among DCMs in an array is generally desired; however i ...
Dual, Low-Power, High-Speed, Fixed-Gain
... This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete devi ...
... This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete devi ...
1 - mohtaram
... output 60kw, if the terminal voltage is then 250V. [Ans: 0.123ohm, 534.5V]. {279.67}. 43. A short shunt compound generator has armature, shunt field, and series field resistance of 0.8 ohm, and 0.6 ohm respectively and supplies a load of 5 kw at 250V. Calculate the wmf generated in the armature {Ans ...
... output 60kw, if the terminal voltage is then 250V. [Ans: 0.123ohm, 534.5V]. {279.67}. 43. A short shunt compound generator has armature, shunt field, and series field resistance of 0.8 ohm, and 0.6 ohm respectively and supplies a load of 5 kw at 250V. Calculate the wmf generated in the armature {Ans ...
Standing wave ratio
In radio engineering and telecommunications, standing wave ratio (SWR) is a measure of impedance matching of loads to the characteristic impedance of a transmission line or waveguide. Impedance mismatches result in standing waves along the transmission line, and SWR is defined as the ratio of the partial standing wave's amplitude at an antinode (maximum) to the amplitude at a node (minimum) along the line.The SWR is usually thought of in terms of the maximum and minimum AC voltages along the transmission line, thus called the voltage standing wave ratio or VSWR (sometimes pronounced ""viswar""). For example, the VSWR value 1.2:1 denotes an AC voltage due to standing waves along the transmission line reaching a peak value 1.2 times that of the minimum AC voltage along that line. The SWR can as well be defined as the ratio of the maximum amplitude to minimum amplitude of the transmission line's currents, electric field strength, or the magnetic field strength. Neglecting transmission line loss, these ratios are identical.The power standing wave ratio (PSWR) is defined as the square of the VSWR, however this terminology has no physical relation to actual powers involved in transmission.The SWR can be measured with an instrument called an SWR meter. Since SWR is defined relative to the transmission line's characteristic impedance, the SWR meter must be constructed for that impedance; in practice most transmission lines used in these applications are coaxial cables with an impedance of either 50 or 75 ohms. Checking the SWR is a standard procedure in a radio station, for instance, to verify impedance matching of the antenna to the transmission line (and transmitter). Unlike connecting an impedance analyzer (or ""impedance bridge"") directly to the antenna (or other load), the SWR does not measure the actual impedance of the load, but quantifies the magnitude of the impedance mismatch just performing a measurement on the transmitter side of the transmission line.