EQUIVALENT CIRCUITS
... The Thévenin and Norton models imply that some of the power generated by the source will necessarily be dissipated by the internal circuits within the source. ...
... The Thévenin and Norton models imply that some of the power generated by the source will necessarily be dissipated by the internal circuits within the source. ...
FM – TUNER
... The frequency of the received radio station is given by f RF (V ) = f LO (V ) m f IF and shown in Figure 3. The range of the tuning voltage should be set with the two 100KΩ trimmers to be between 5.5V to 19V. ...
... The frequency of the received radio station is given by f RF (V ) = f LO (V ) m f IF and shown in Figure 3. The range of the tuning voltage should be set with the two 100KΩ trimmers to be between 5.5V to 19V. ...
Test Procedure for the NCP1013LED Evaluation Board Introduction:
... 1. Adjustable, isolated AC power source capable of zero to 265 Vac output and up to 500 mA. AC source should have the capability of measuring output power in watts. If not, an AC line analyzer or AC wattmeter should be used. Wattmeter should be capable if reading down to 50 mW (for standby power ...
... 1. Adjustable, isolated AC power source capable of zero to 265 Vac output and up to 500 mA. AC source should have the capability of measuring output power in watts. If not, an AC line analyzer or AC wattmeter should be used. Wattmeter should be capable if reading down to 50 mW (for standby power ...
4. RLC series resonance
... In a circuit, consisting of reactive components of opposite nature i.e., L & C, if we change the variables F, L or C there comes a situation when over all impedance(or Admittance) of the circuit becomes purely resistive (or conductive G). Such a condition is called “RESONANCE”. In Resonance conditio ...
... In a circuit, consisting of reactive components of opposite nature i.e., L & C, if we change the variables F, L or C there comes a situation when over all impedance(or Admittance) of the circuit becomes purely resistive (or conductive G). Such a condition is called “RESONANCE”. In Resonance conditio ...
Analysis Methods for Transient Circuits
... Analysis Methods for Transient Circuits Dr. Holbert March 17, 2008 ...
... Analysis Methods for Transient Circuits Dr. Holbert March 17, 2008 ...
Dwarkadas. J. Sanghvi College of Engineering Department of
... 5. Gradually increase the load current above 17mA.You will see that the load voltage suddenly decreases when the load current is about 17mA to 20mA. Measure and record a few values of load current and load voltage below and above the current limiting point.Now the voltage across RSENSE is enough to ...
... 5. Gradually increase the load current above 17mA.You will see that the load voltage suddenly decreases when the load current is about 17mA to 20mA. Measure and record a few values of load current and load voltage below and above the current limiting point.Now the voltage across RSENSE is enough to ...
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.