Design of Low Power CMOS Crystal Oscillator with Tuning Capacitors
... silicon chip where power supply is limited and frequency precision is of some concern. Furthermore, for the miniaturized portable devices, low power consumption is always a crucial requirement, which leads to the major consideration of this proposed crystal oscillator. In this paper, a low power CMO ...
... silicon chip where power supply is limited and frequency precision is of some concern. Furthermore, for the miniaturized portable devices, low power consumption is always a crucial requirement, which leads to the major consideration of this proposed crystal oscillator. In this paper, a low power CMO ...
Using a Current Sharing Controller when the Sum Current of Both
... U4 is a 74HC132 quad CMOS NAND gate with hysteresis on each input. U5 is a 74HC163 4-bit programmable CMOS counter. The output of U4A is logic low when VINA and VINB is within the threshold determined by R8 and R9. When VINA and VINB is beyond this threshold, the corresponding comparator output be ...
... U4 is a 74HC132 quad CMOS NAND gate with hysteresis on each input. U5 is a 74HC163 4-bit programmable CMOS counter. The output of U4A is logic low when VINA and VINB is within the threshold determined by R8 and R9. When VINA and VINB is beyond this threshold, the corresponding comparator output be ...
SESDxxxWB
... specification herein, to make corrections, modifications, enhancements or other changes. WILLAS or anyone on its behalf assumes no responsibility or liability for any errors or inaccuracies. Data sheet specifications and its information contained are intended to provide a product description only ...
... specification herein, to make corrections, modifications, enhancements or other changes. WILLAS or anyone on its behalf assumes no responsibility or liability for any errors or inaccuracies. Data sheet specifications and its information contained are intended to provide a product description only ...
Protection of Complex Transmission lines – parallel feeders, muti
... from earth faults Application of Distance Protection Schemes There are two main groups of distance schemes, transfer trip schemes and blocking schemes. When comparing these schemes the usual consideration is security and dependability. Furthermore, transfer trip schemes require fault current infeed ...
... from earth faults Application of Distance Protection Schemes There are two main groups of distance schemes, transfer trip schemes and blocking schemes. When comparing these schemes the usual consideration is security and dependability. Furthermore, transfer trip schemes require fault current infeed ...
Resonant Frequency Splitting Analysis and Optimation of
... The stability of the system is one of the key performances, which requires a single stable resonance frequency. The resonant frequency is the frequency solutions which ensure zero of the system’s input impedance imaginary part ImYin . With a fixed RL , there exists a minimum threshold distance when ...
... The stability of the system is one of the key performances, which requires a single stable resonance frequency. The resonant frequency is the frequency solutions which ensure zero of the system’s input impedance imaginary part ImYin . With a fixed RL , there exists a minimum threshold distance when ...
3.0 Operating Procedures
... transmitting with “home built” equipment and operating at higher powers requires the Advanced qualification. No person may operate his or her equipment so that it will interfere with any radio station or private receiving station. The operator of any Amateur station shall transmit the station’s call ...
... transmitting with “home built” equipment and operating at higher powers requires the Advanced qualification. No person may operate his or her equipment so that it will interfere with any radio station or private receiving station. The operator of any Amateur station shall transmit the station’s call ...
Recommending a Strategy
... We can get similar relationships for buses 3 and 4 The results can then be expressed in matrix form I Ybus V YA YB I1 YA YB I Y YA YC YD YC ...
... We can get similar relationships for buses 3 and 4 The results can then be expressed in matrix form I Ybus V YA YB I1 YA YB I Y YA YC YD YC ...
The varactor resonator shown is resonant at 135 MHz. In the circuit
... 3- For the resonant series circuit shown below, determine the expression for quality factor, Q, in terms of R, L, and C. Recall that Quality factor is defined as: Q = 2π(max energy stored/total energy lost per cycle). ...
... 3- For the resonant series circuit shown below, determine the expression for quality factor, Q, in terms of R, L, and C. Recall that Quality factor is defined as: Q = 2π(max energy stored/total energy lost per cycle). ...
Chapter30
... • Slew rate required for Sinusoid with frequency f and amplitude A • Maximum amplitude of a sine wave with frequency f for a given slew rate ...
... • Slew rate required for Sinusoid with frequency f and amplitude A • Maximum amplitude of a sine wave with frequency f for a given slew rate ...
BW23444449
... IV.2 OPERATION OF TCSC A TCSC is a series-controlled capacitive reactance that can provide continuous control of power on the ac line over a wide range. From the system viewpoint, the principle of variable-series compensation is simply to increase the fundamental-frequency voltage across an fixed ca ...
... IV.2 OPERATION OF TCSC A TCSC is a series-controlled capacitive reactance that can provide continuous control of power on the ac line over a wide range. From the system viewpoint, the principle of variable-series compensation is simply to increase the fundamental-frequency voltage across an fixed ca ...
Section J8b: FET Low Frequency Response
... Just like we did for the BJT configurations, we’re going to start by looking at each of the basic amplifier stages in terms of analysis and finish with strategies for designing for a specific low frequency characteristic. All amplifiers are presented as capacitive-coupled to stages that may occur be ...
... Just like we did for the BJT configurations, we’re going to start by looking at each of the basic amplifier stages in terms of analysis and finish with strategies for designing for a specific low frequency characteristic. All amplifiers are presented as capacitive-coupled to stages that may occur be ...
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.