Electrical Formulas
... * Note 1. Get %Z from nameplate or Table 1. Transformer impedance (Z) helps to determine what the short circuit current will be at the transformer secondary. Transformer impedance is determined as follows: The transformer secondary is short circuited. Voltage is increased on the primary until full l ...
... * Note 1. Get %Z from nameplate or Table 1. Transformer impedance (Z) helps to determine what the short circuit current will be at the transformer secondary. Transformer impedance is determined as follows: The transformer secondary is short circuited. Voltage is increased on the primary until full l ...
PicoScope 6 spectrum mode
... If the source waveform contains fewer samples than required (that is, fewer than twice the number of frequency bins), PicoScope zero-pads the waveform up to the next power of two. For example, if the scope view contains 10 000 samples, and you set Spectrum Bins to 16384, then PicoScope zero-pads the ...
... If the source waveform contains fewer samples than required (that is, fewer than twice the number of frequency bins), PicoScope zero-pads the waveform up to the next power of two. For example, if the scope view contains 10 000 samples, and you set Spectrum Bins to 16384, then PicoScope zero-pads the ...
icl8038,precision waveform generator.pdf
... applied directly to pin 8, merely providing DC decoupling with a capacitor as shown in Figure 5A. An external resistor between pins 7 and 8 is not necessary, but it can be used to increase input impedance from about 8kΩ (pins 7 and 8 connected together), to about (R + 8kΩ). For larger FM deviations ...
... applied directly to pin 8, merely providing DC decoupling with a capacitor as shown in Figure 5A. An external resistor between pins 7 and 8 is not necessary, but it can be used to increase input impedance from about 8kΩ (pins 7 and 8 connected together), to about (R + 8kΩ). For larger FM deviations ...
A Cross-Coupled CMOS Negative Capacitor for Wideband Metamaterial Applications
... designed to have properties not normally shown in natural materials. They use specially-designed structures that can show properties such as a negative refractive index. For example, split ring resonators (SRRs) are used to create microwave structures that can be used for cloaking applications [2]. ...
... designed to have properties not normally shown in natural materials. They use specially-designed structures that can show properties such as a negative refractive index. For example, split ring resonators (SRRs) are used to create microwave structures that can be used for cloaking applications [2]. ...
Chapter 21 Powerpoint
... resonance frequency of the circuit? (c) When will the current be greatest—at resonance, at ten percent below the resonant frequency, or at ten percent above the resonant frequency? (d) What is the rms current in the circuit at a frequency of 60 Hz? ...
... resonance frequency of the circuit? (c) When will the current be greatest—at resonance, at ten percent below the resonant frequency, or at ten percent above the resonant frequency? (d) What is the rms current in the circuit at a frequency of 60 Hz? ...
A v - NCNU Moodle 課程
... We will learn – how each device operates, – how devices comprise circuits that perform interesting and useful functions, and ...
... We will learn – how each device operates, – how devices comprise circuits that perform interesting and useful functions, and ...
Power factor at the load
... associated to receives/absorbs the P. • If P is positive than the P in which the source is associated to generates/delivers the P. • If Q is negative than the Q in which the source is associated to receives/absorbs the Q. • If Q is positive than the Q in which the source is associated to generates/d ...
... associated to receives/absorbs the P. • If P is positive than the P in which the source is associated to generates/delivers the P. • If Q is negative than the Q in which the source is associated to receives/absorbs the Q. • If Q is positive than the Q in which the source is associated to generates/d ...
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.