Real-Time Impedance Measurement and Frequency Control in an
... for most efficient microwave power transfer to the plasma will exhibit both a high Q and low |Γ| when driving plasma. However, such a network will also have a resonant frequency that varies with plasma impedance (e.g. Figure 4b). Since the gas pressure, and thus the plasma impedance, varies widely ( ...
... for most efficient microwave power transfer to the plasma will exhibit both a high Q and low |Γ| when driving plasma. However, such a network will also have a resonant frequency that varies with plasma impedance (e.g. Figure 4b). Since the gas pressure, and thus the plasma impedance, varies widely ( ...
IEEE Transactions on Magnetics
... and high electromagnetic interference problems. In order to solve the problem, this paper proposes a topology of the traditional six-switch three-phase inverter but with an ...
... and high electromagnetic interference problems. In order to solve the problem, this paper proposes a topology of the traditional six-switch three-phase inverter but with an ...
II. Droop Controlling Method
... The complete control of the micro source is shown in Fig. 1. The inputs are either measurements (like the voltages and currents) or set points (for voltage, power and the nominal grid frequency). The outputs are the gate pulses that dictate when and for how long the power electronic devices are goin ...
... The complete control of the micro source is shown in Fig. 1. The inputs are either measurements (like the voltages and currents) or set points (for voltage, power and the nominal grid frequency). The outputs are the gate pulses that dictate when and for how long the power electronic devices are goin ...
Effects of Total Harmonic Distortion on Power System
... that accompany a primary or fundamental waveform. They result when a system produces wave frequencies that are simple in ratios with the fundamental frequency (2:1, 3:1, 4:1, and so on). In electrical power system, the power supply line produces the fundamental frequency (or first harmonic), which i ...
... that accompany a primary or fundamental waveform. They result when a system produces wave frequencies that are simple in ratios with the fundamental frequency (2:1, 3:1, 4:1, and so on). In electrical power system, the power supply line produces the fundamental frequency (or first harmonic), which i ...
dip meter - pa0fri.com
... Taking the coil compartment out, you will find a battery snap connector inside the unit. Fit the snap to the battery. First lay the battery take-out ribbon into the battery holder, then install the battery in place. Place the supplied oscillation coils into the coil compartment and reinstall into th ...
... Taking the coil compartment out, you will find a battery snap connector inside the unit. Fit the snap to the battery. First lay the battery take-out ribbon into the battery holder, then install the battery in place. Place the supplied oscillation coils into the coil compartment and reinstall into th ...
LT5568 - 700MHz - 1050MHz High Linearity Direct Quadrature Modulator.
... PHS, GSM, EDGE, TD-SCDMA, CDMA, CDMA2000, WCDMA, and other systems. It may also be configured as an image reject upconverting mixer, by applying 90° phase-shifted signals to the I and Q inputs. The I/Q baseband inputs consist of voltage-to-current converters that in turn drive double-balanced mixers. ...
... PHS, GSM, EDGE, TD-SCDMA, CDMA, CDMA2000, WCDMA, and other systems. It may also be configured as an image reject upconverting mixer, by applying 90° phase-shifted signals to the I and Q inputs. The I/Q baseband inputs consist of voltage-to-current converters that in turn drive double-balanced mixers. ...
AN2372
... BLDC motors are the workhorses in most light industrial applications. In some cases, Halleffect position sensors are used to simplify control logics for controlling these motors. BLDC motors, by the nature of currents through them, are somewhat noisy and a little less efficient. These disadvantages ...
... BLDC motors are the workhorses in most light industrial applications. In some cases, Halleffect position sensors are used to simplify control logics for controlling these motors. BLDC motors, by the nature of currents through them, are somewhat noisy and a little less efficient. These disadvantages ...
Aalborg Universitet
... Abstract — A drawback of Pulse Width Modulation in electrical drives is the high harmonic content of the line to line voltages, which gives rise to Electro-Magnetic Interference and acoustic noise. By injection of a signal into the common mode voltage, the fundamental is not affected, but new freque ...
... Abstract — A drawback of Pulse Width Modulation in electrical drives is the high harmonic content of the line to line voltages, which gives rise to Electro-Magnetic Interference and acoustic noise. By injection of a signal into the common mode voltage, the fundamental is not affected, but new freque ...
Power System Harmonic Mitigation for Water
... Sources of Harmonics There are many sources of power system harmonics. Some examples of harmonic producing devices are: Transformers: Third harmonic currents are present in the magnetizing current (a small portion of the transformer full load current). If the transformer saturates (due to over volta ...
... Sources of Harmonics There are many sources of power system harmonics. Some examples of harmonic producing devices are: Transformers: Third harmonic currents are present in the magnetizing current (a small portion of the transformer full load current). If the transformer saturates (due to over volta ...
Dominator™ II Precision MultiBand Peak Limiter
... Since most energy is contained in the lower frequencies, they tend to control the level of the entire spectrum. When the lower frequencies are above the limit threshold the higher frequencies are attenuated thus causing the output to sound dull. Multiband processing solves these problems by splittin ...
... Since most energy is contained in the lower frequencies, they tend to control the level of the entire spectrum. When the lower frequencies are above the limit threshold the higher frequencies are attenuated thus causing the output to sound dull. Multiband processing solves these problems by splittin ...
Mavilor Motors Company
... brushles, the tacho ripple and the load. In a motor one of the functions of the brush is to help reduce the commutation current. To this end a deliberate choice is made regarding the resistivity of the brush. But in a tacho this does not come into play, since there is no current worth mentioning flo ...
... brushles, the tacho ripple and the load. In a motor one of the functions of the brush is to help reduce the commutation current. To this end a deliberate choice is made regarding the resistivity of the brush. But in a tacho this does not come into play, since there is no current worth mentioning flo ...
Phase Locked Loop Based Frequency Synthesis
... ΔΣ fractional-N PLLs does not depend on the VCO frequency. By simply increasing the number of modulation bits, a very fine frequency resolution, e.g. 1 Hz, can be obtained. This method is similar to the random jittering method, but it does not generate a frequency jitter because of the noise shaping ...
... ΔΣ fractional-N PLLs does not depend on the VCO frequency. By simply increasing the number of modulation bits, a very fine frequency resolution, e.g. 1 Hz, can be obtained. This method is similar to the random jittering method, but it does not generate a frequency jitter because of the noise shaping ...
Fractional-N Frequency Synthesizer with Multi-Band
... The charge pump is fully differential with single-ended output as shown in Fig. 6. The PFD input phase error is represented by the PFD UP and DOWN output pulses, which control the CP source and sink current sources, resulting in current flow in or out of the charge pump. The gain of this PFD/charge ...
... The charge pump is fully differential with single-ended output as shown in Fig. 6. The PFD input phase error is represented by the PFD UP and DOWN output pulses, which control the CP source and sink current sources, resulting in current flow in or out of the charge pump. The gain of this PFD/charge ...
RA33H1516M1
... Examples of critical communications elements would include transmitters for base station applications and fixed station applications that operate with long term continuous transmission and a higher on-off frequency during transmitting, especially for systems that may have a high impact to society. 3 ...
... Examples of critical communications elements would include transmitters for base station applications and fixed station applications that operate with long term continuous transmission and a higher on-off frequency during transmitting, especially for systems that may have a high impact to society. 3 ...
EMI Profile of Ephesus Stadium Lighting System
... set at 0%, 20%, 50%, and Game Mode (~80%) intensity, with the pre-existing lighting system powered off. The detected frequencies at these intensity settings can be seen in Figure 3. There is an apparent 780 MHz RF tone at the 0% intensity setting, but this tone is not caused by the Ephesus system. T ...
... set at 0%, 20%, 50%, and Game Mode (~80%) intensity, with the pre-existing lighting system powered off. The detected frequencies at these intensity settings can be seen in Figure 3. There is an apparent 780 MHz RF tone at the 0% intensity setting, but this tone is not caused by the Ephesus system. T ...
Utility frequency
The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the frequency of the oscillations of alternating current (AC) in an electric power grid transmitted from a power plant to the end-user. In large parts of the world this is 50 Hz, although in the Americas and parts of Asia it is typically 60 Hz. Current usage by country or region is given in the list of mains power around the world.During the development of commercial electric power systems in the late 19th and early 20th centuries, many different frequencies (and voltages) had been used. Large investment in equipment at one frequency made standardization a slow process. However, as of the turn of the 21st century, places that now use the 50 Hz frequency tend to use 220–240 V, and those that now use 60 Hz tend to use 100–127 V. Both frequencies coexist today (Japan uses both) with no great technical reason to prefer one over the other and no apparent desire for complete worldwide standardization.Unless specified by the manufacturer to operate on both 50 and 60 Hz, appliances may not operate efficiently or even safely if used on anything other than the intended frequency.