ee2.cust.edu.tw
... • If two sinusoids are in phase, then this means that the reach their maximum and minimum at the same time. • Sinusoids may be expressed as sine or cosine. • The conversion between them is: sin t 180 sin t cos t 180 cos t sin t 90 cos t cos t 90 sin t ...
... • If two sinusoids are in phase, then this means that the reach their maximum and minimum at the same time. • Sinusoids may be expressed as sine or cosine. • The conversion between them is: sin t 180 sin t cos t 180 cos t sin t 90 cos t cos t 90 sin t ...
High Voltage CMOS Amplifier Enables High Impedance Sensing
... resistor networks to keep loading effects to an inconspicuous level, but even this can introduce significant error, particularly in higher voltage circuits that involve high resistances. The solution is to use high impedance amplifiers in an electrometer configuration, so only miniscule amplifier in ...
... resistor networks to keep loading effects to an inconspicuous level, but even this can introduce significant error, particularly in higher voltage circuits that involve high resistances. The solution is to use high impedance amplifiers in an electrometer configuration, so only miniscule amplifier in ...
TEMPLATE FOR EXAMINATION PAPERS
... c) Consider the following situation. A lightening conductor is attached to a tower and connected to a lightening earthing rod via a conductor tape with a characteristic impedance of 350 . The lightening rod has a inherent inductance of 15 H and capacitance of 6 nF, the ground into which the rod is ...
... c) Consider the following situation. A lightening conductor is attached to a tower and connected to a lightening earthing rod via a conductor tape with a characteristic impedance of 350 . The lightening rod has a inherent inductance of 15 H and capacitance of 6 nF, the ground into which the rod is ...
Lab 2 - Full wave rectifier
... Plot the R-C circuit phase vs frequency over the same range 10Hz to 100kHz. Setup the CRO to plot input Amplitude on the X axis and Output amplitude on the Y axis. What angle on the CRO is represented as 0 degrees? Find the frequency where the phase is 15 degrees? 30 degrees? 45 degrees? 60 degrees? ...
... Plot the R-C circuit phase vs frequency over the same range 10Hz to 100kHz. Setup the CRO to plot input Amplitude on the X axis and Output amplitude on the Y axis. What angle on the CRO is represented as 0 degrees? Find the frequency where the phase is 15 degrees? 30 degrees? 45 degrees? 60 degrees? ...
AC Circuits Tip Sheet - faculty at Chemeketa
... Average power for resistors can be calculated with root mean squared (rms) values for current and potential difference plus the formulas from the DC circuit chapter. Average power for capacitors and inductors is zero. Average power for a single power supply is the sum of the powers of all the other ...
... Average power for resistors can be calculated with root mean squared (rms) values for current and potential difference plus the formulas from the DC circuit chapter. Average power for capacitors and inductors is zero. Average power for a single power supply is the sum of the powers of all the other ...
PowerPoint Sunusu
... • The RLC part of the name is due to those letters being the usual electrical symbols for resistance, inductance and capacitance respectively. • The circuit forms a harmonic oscillator for current and will resonate in a similar way as an LC circuit will. The main difference that the presence of the ...
... • The RLC part of the name is due to those letters being the usual electrical symbols for resistance, inductance and capacitance respectively. • The circuit forms a harmonic oscillator for current and will resonate in a similar way as an LC circuit will. The main difference that the presence of the ...
High Frequency Pulse Generator
... Design Features • Converts mechanical rotation into electrical pulses. • Adapts to most meters. • Self-contained, optical encoder module. • Explosion-proof and weather tight (1/2" conduit). ...
... Design Features • Converts mechanical rotation into electrical pulses. • Adapts to most meters. • Self-contained, optical encoder module. • Explosion-proof and weather tight (1/2" conduit). ...
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.