TDA8950 2 x 150 W class-D power amplifier - Rcl
... If a short-circuit is applied to one of the demodulated outputs of the amplifier, the OCP will detect this. If the output current exceeds the maximum of 9.2 A, it is automatically limited to its maximum value by the OCP protection circuit. The amplifier outputs remain switching (the amplifier is NOT ...
... If a short-circuit is applied to one of the demodulated outputs of the amplifier, the OCP will detect this. If the output current exceeds the maximum of 9.2 A, it is automatically limited to its maximum value by the OCP protection circuit. The amplifier outputs remain switching (the amplifier is NOT ...
Rebirth of Negative-Sequence Quantities in Protective Relaying
... at synchronous speed (ωS) with a small angle difference between the two. Ideally, there is no induction of currents in the rotor. For an induction motor, the two fluxes rotate normally at almost the same speed. The stator flux (φS) rotates at synchronous speed, but the rotor flux (φR) rotates at al ...
... at synchronous speed (ωS) with a small angle difference between the two. Ideally, there is no induction of currents in the rotor. For an induction motor, the two fluxes rotate normally at almost the same speed. The stator flux (φS) rotates at synchronous speed, but the rotor flux (φR) rotates at al ...
Electrical Engineering and Control System Lab
... 1. The circuit connections are given as per the circuit diagram 2. The variac is kept at minimum output voltage position. 3. Here the transformer is used in step down configuration. The supply is given to low voltage winding and the load is connected to high voltage winding. 4. The DPSTs2 is kept o ...
... 1. The circuit connections are given as per the circuit diagram 2. The variac is kept at minimum output voltage position. 3. Here the transformer is used in step down configuration. The supply is given to low voltage winding and the load is connected to high voltage winding. 4. The DPSTs2 is kept o ...
MAX7032 Low-Cost, Crystal-Based, Programmable, ASK/FSK Transceiver with Fractional-N PLL General Description
... designed to transmit and receive ASK/OOK or FSK data in the 300MHz to 450MHz frequency range with data rates up to 33kbps (Manchester encoded) or 66kbps (NRZ encoded). This device generates a typical output power of +10dBm into a 50Ω load, and exhibits typical sensitivities of -114dBm for ASK data a ...
... designed to transmit and receive ASK/OOK or FSK data in the 300MHz to 450MHz frequency range with data rates up to 33kbps (Manchester encoded) or 66kbps (NRZ encoded). This device generates a typical output power of +10dBm into a 50Ω load, and exhibits typical sensitivities of -114dBm for ASK data a ...
Glossary of Standard Operating Terms
... A synchronous condenser is a synchronous machine with no mechanical load which is driven from the system. By varying the field current of the condenser, the driving current taken from the system can be made to either lead or lag the applied voltage with the effect of producing or absorbing reactive ...
... A synchronous condenser is a synchronous machine with no mechanical load which is driven from the system. By varying the field current of the condenser, the driving current taken from the system can be made to either lead or lag the applied voltage with the effect of producing or absorbing reactive ...
Full-Text PDF
... advantages of the proposed printed sensor are: mechanical flexibility, light weight, short design and fabrication time, low fabrication cost, absolute reproducibility, compact design and wide range of applicability. Apart from this, printed sensors have a number of ecological benefits such as the ef ...
... advantages of the proposed printed sensor are: mechanical flexibility, light weight, short design and fabrication time, low fabrication cost, absolute reproducibility, compact design and wide range of applicability. Apart from this, printed sensors have a number of ecological benefits such as the ef ...
Lecture 11: Symmetrical faults
... Fault current transients in machines The AC current flowing in the generator during the subtransient period is called the subtransient current and is denoted by I”. This current is caused by the damper windings of synchronous machines. The time constant of the subtransient current is denoted by T” a ...
... Fault current transients in machines The AC current flowing in the generator during the subtransient period is called the subtransient current and is denoted by I”. This current is caused by the damper windings of synchronous machines. The time constant of the subtransient current is denoted by T” a ...
"Alternating Current Circuits and Electromagnetic Waves", of Serway
... To understand the meaning of inductive reactance, compare Equation 21.8 with Equation 21.7. First, note from Equation 21.8 that the inductive reactance depends on the inductance L. This is reasonable, because the back emf (Eq. 21.7) is large for large values of L. Second, note that the inductive rea ...
... To understand the meaning of inductive reactance, compare Equation 21.8 with Equation 21.7. First, note from Equation 21.8 that the inductive reactance depends on the inductance L. This is reasonable, because the back emf (Eq. 21.7) is large for large values of L. Second, note that the inductive rea ...
TPS40057-Q1 数据资料 dataSheet 下载
... The TPS4005x uses variable (user programmable) UVLO protection. The UVLO circuit holds the soft-start low until the input voltage has exceeded the user programmable undervoltage threshold. The TPS4005x uses the feed-forward pin, KFF, as a user programmable low-line UVLO detection. This variable low- ...
... The TPS4005x uses variable (user programmable) UVLO protection. The UVLO circuit holds the soft-start low until the input voltage has exceeded the user programmable undervoltage threshold. The TPS4005x uses the feed-forward pin, KFF, as a user programmable low-line UVLO detection. This variable low- ...
Series-Parallel ac Networks
... first the total impedance and then the source current. When the unknown quantities are found in terms of these subscripted impedances, the numerical values can then be substituted to find the magnitude and phase angle of the unknown. In other words, try to find the desired solution solely in terms o ...
... first the total impedance and then the source current. When the unknown quantities are found in terms of these subscripted impedances, the numerical values can then be substituted to find the magnitude and phase angle of the unknown. In other words, try to find the desired solution solely in terms o ...
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.