Ahmedabad Institute of Technology
... The coils are form wound but are multi layer disc type usually wound I the form of pancakes. Advantages of such construction. A relatively more rigid core Lesser weight and size per kVA rating Low iron losses at higher operating flux densities Low cost of manufacture. ...
... The coils are form wound but are multi layer disc type usually wound I the form of pancakes. Advantages of such construction. A relatively more rigid core Lesser weight and size per kVA rating Low iron losses at higher operating flux densities Low cost of manufacture. ...
MR4000Series
... Series ensures that the main transformer does not become saturated as long as the droop setting is optimized. At startup and in the event of a load short, the output voltage is significantly lower than the set voltage. Since the control coil voltage is proportional to the output voltage, it also dro ...
... Series ensures that the main transformer does not become saturated as long as the droop setting is optimized. At startup and in the event of a load short, the output voltage is significantly lower than the set voltage. Since the control coil voltage is proportional to the output voltage, it also dro ...
X Switching Overvoltage Mitigation Measures
... Controlled closing of circuit breakers to limit switching overvoltages was suggested as early as 1966 [15]; was viewed as less than practical 1969 [8]; was proposed as part of a combined closing resistor and controlled closing solution in 1970 [6]; was actually tested on a power system in 1976 [16]; ...
... Controlled closing of circuit breakers to limit switching overvoltages was suggested as early as 1966 [15]; was viewed as less than practical 1969 [8]; was proposed as part of a combined closing resistor and controlled closing solution in 1970 [6]; was actually tested on a power system in 1976 [16]; ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,
... The standard three-phase VSI topology is shown in Fig. 4 and the eight valid switch states are given in Table 3. As in single-phase VSIs, the switches of any leg of the inverter (S1 and S4, S3 and S6, or S5 and S2) cannot be switched on simultaneously because this would result in a short circuit acr ...
... The standard three-phase VSI topology is shown in Fig. 4 and the eight valid switch states are given in Table 3. As in single-phase VSIs, the switches of any leg of the inverter (S1 and S4, S3 and S6, or S5 and S2) cannot be switched on simultaneously because this would result in a short circuit acr ...
DOC
... current. Making the resistance higher will let less current flow so the volume goes down. Making the resistance lower will let more current flow so the volume goes up. The value of a variable resistor is given as it’s highest resistance value. For example, a 500 ohm variable resistor can have a resi ...
... current. Making the resistance higher will let less current flow so the volume goes down. Making the resistance lower will let more current flow so the volume goes up. The value of a variable resistor is given as it’s highest resistance value. For example, a 500 ohm variable resistor can have a resi ...
MAX13253 1A, Spread-Spectrum, Push-Pull, Transformer Driver for Isolated Power Supplies General Description
... and operates from a single +3.0V to +5.5V supply. The transformer’s secondary-to-primary winding ratio defines the output voltage, allowing selection of virtually any isolated output voltage with galvanic isolation. The MAX13253 features an integrated oscillator driving a pair of n-channel power swi ...
... and operates from a single +3.0V to +5.5V supply. The transformer’s secondary-to-primary winding ratio defines the output voltage, allowing selection of virtually any isolated output voltage with galvanic isolation. The MAX13253 features an integrated oscillator driving a pair of n-channel power swi ...
International Electrical Engineering Journal (IEEJ) Vol. 5 (2014) No.12, pp. 1703-1710
... In this figure, the feeder impedances are denoted by the Pairs (Rs1, Ls1) and (Rs2 , Ls2). It can be seen that the two feeders supply the loads L-1 and L-2. The load L-1 is assumed to have two separate components—an unbalanced part (L-11) and a non-linear part (L-12). The currents drawn by these two ...
... In this figure, the feeder impedances are denoted by the Pairs (Rs1, Ls1) and (Rs2 , Ls2). It can be seen that the two feeders supply the loads L-1 and L-2. The load L-1 is assumed to have two separate components—an unbalanced part (L-11) and a non-linear part (L-12). The currents drawn by these two ...
Feng_T_T_2017
... electronics, which made from Silicon, used in these systems can only operate upto 150 °C before being recovered from the well due to high leakage current. By increasing the ambient temperature capability of the electronic device, longer logging times and deeper drilling is capable. Cooling and conve ...
... electronics, which made from Silicon, used in these systems can only operate upto 150 °C before being recovered from the well due to high leakage current. By increasing the ambient temperature capability of the electronic device, longer logging times and deeper drilling is capable. Cooling and conve ...
Unit 2 - Mahalakshmi Engineering College
... 12. What is Aquadag? What is purpose of Aquadag? (May 2010) Aquadag is a graphite based coating commonly found in cathode ray tubes The coating can be on the inside of the tube, where it helps to maintain a constant electrical field near the screen. Tubes intended for television use normally have an ...
... 12. What is Aquadag? What is purpose of Aquadag? (May 2010) Aquadag is a graphite based coating commonly found in cathode ray tubes The coating can be on the inside of the tube, where it helps to maintain a constant electrical field near the screen. Tubes intended for television use normally have an ...
Hartley oscillator
... The Hartley oscillator is distinguished by a tank circuit consisting of two series-connected coils in parallel with a capacitor, with the feedback signal needed for oscillation taken from the center connection between the coils; the coils act as a voltage divider. The Hartley oscillator is the dual ...
... The Hartley oscillator is distinguished by a tank circuit consisting of two series-connected coils in parallel with a capacitor, with the feedback signal needed for oscillation taken from the center connection between the coils; the coils act as a voltage divider. The Hartley oscillator is the dual ...
RT6254A, RT6254B - Richtek Technology
... output ripple voltage to decrease system efficiency. Conversely, higher inductance increase system efficiency, but the physical size of inductor will become larger and transient response will be slow because more transient time is required to change current (up or down) by inductor. A good compromis ...
... output ripple voltage to decrease system efficiency. Conversely, higher inductance increase system efficiency, but the physical size of inductor will become larger and transient response will be slow because more transient time is required to change current (up or down) by inductor. A good compromis ...
MP174 - Monolithic Power System
... the IC from the Drain pin. When VCC voltage reaches 5.6V, the IC starts switching and the internal high voltage regulator turns off. The internal high-voltage regulator turns on to charge the external VCC capacitor when the VCC voltage falls below 5.3V. A small capacitor (in the low μF range) can ma ...
... the IC from the Drain pin. When VCC voltage reaches 5.6V, the IC starts switching and the internal high voltage regulator turns off. The internal high-voltage regulator turns on to charge the external VCC capacitor when the VCC voltage falls below 5.3V. A small capacitor (in the low μF range) can ma ...
Surge Arrester Application on Mv-Capacitor Banks to
... Medium voltage capacitor banks are designed for industrial, utility and commercial power systems to improve power factor, increase system capacity, reduce harmonic distortion and improve voltage regulation. Capacitor bank switching is one of the most demanding operations in MV networks, due to its a ...
... Medium voltage capacitor banks are designed for industrial, utility and commercial power systems to improve power factor, increase system capacity, reduce harmonic distortion and improve voltage regulation. Capacitor bank switching is one of the most demanding operations in MV networks, due to its a ...
MAX8822 Ultra-Efficient Negative Charge-Pump LED General Description
... and other handheld devices. By utilizing a proprietary negative 0.5x inverting charge pump and innovative independent low-dropout (LDO) adaptive current regulators, very high efficiency is achieved over the full 1-cell Li+ battery voltage range, even with large LED VF mismatch. The 1MHz fixed-freque ...
... and other handheld devices. By utilizing a proprietary negative 0.5x inverting charge pump and innovative independent low-dropout (LDO) adaptive current regulators, very high efficiency is achieved over the full 1-cell Li+ battery voltage range, even with large LED VF mismatch. The 1MHz fixed-freque ...
EX-504 - ITM GOI
... would generates harmonics at unpredictable frequencies and the design would be difficult. CHOPPER USING SCR : In this SCR is used as switch. Thus SCR is to be made ON & OFF depending on chopping frequency. ...
... would generates harmonics at unpredictable frequencies and the design would be difficult. CHOPPER USING SCR : In this SCR is used as switch. Thus SCR is to be made ON & OFF depending on chopping frequency. ...
NCV97311 - Automotive Battery-Connected
... battery−connected 3 A, 2 MHz non−synchronous switcher and two low−voltage 1.5 A, 2 MHz synchronous switchers; all using integrated power transistors. The high−voltage switcher is capable of converting a 4.1 V to 18 V battery input to a 5 V or 3.3 V output at a constant 2 MHz switching frequency, del ...
... battery−connected 3 A, 2 MHz non−synchronous switcher and two low−voltage 1.5 A, 2 MHz synchronous switchers; all using integrated power transistors. The high−voltage switcher is capable of converting a 4.1 V to 18 V battery input to a 5 V or 3.3 V output at a constant 2 MHz switching frequency, del ...
Spark-gap transmitter
A spark-gap transmitter is a device that generates radio frequency electromagnetic waves using a spark gap.Spark gap transmitters were the first devices to demonstrate practical radio transmission, and were the standard technology for the first three decades of radio (1887–1916). Later, more efficient transmitters were developed based on rotary machines like the high-speed Alexanderson alternators and the static Poulsen Arc generators.Most operators, however, still preferred spark transmitters because of their uncomplicated design and because the carrier stopped when the telegraph key was released, which let the operator ""listen through"" for a reply. With other types of transmitter, the carrier could not be controlled so easily, and they required elaborate measures to modulate the carrier and to prevent transmitter leakage from de-sensitizing the receiver. After WWI, greatly improved transmitters based on vacuum tubes became available, which overcame these problems, and by the late 1920s the only spark transmitters still in regular operation were ""legacy"" installations on naval vessels. Even when vacuum tube based transmitters had been installed, many vessels retained their crude but reliable spark transmitters as an emergency backup. However, by 1940, the technology was no longer used for communication. Use of the spark-gap transmitter led to many radio operators being nicknamed ""Sparks"" long after they ceased using spark transmitters. Even today, the German verb funken, literally, ""to spark,"" also means ""to send a radio message or signal.""