Integrated compact units - AEG Industrial Engineering
... commutation of the current in the lower speed range must be ensured by forcing the current to zero (clocking) because the machine voltage is still too low at that point. In the clocking mode, the electronic switching gate (1.2) interrupts the speed controller at the output so that the mains converte ...
... commutation of the current in the lower speed range must be ensured by forcing the current to zero (clocking) because the machine voltage is still too low at that point. In the clocking mode, the electronic switching gate (1.2) interrupts the speed controller at the output so that the mains converte ...
A044040108
... An increasing demand for high quality, reliable electrical power and increasing number of distorting loads may leads to an increased awareness of power quality both by customers and utilities. The most common power quality problems today are voltage sags, harmonic distortion and low power factor. Vo ...
... An increasing demand for high quality, reliable electrical power and increasing number of distorting loads may leads to an increased awareness of power quality both by customers and utilities. The most common power quality problems today are voltage sags, harmonic distortion and low power factor. Vo ...
ISSCC 2004 / SESSION 12 / BIOMICROSYSTEMS / 12.6 12.6
... required current in short-duration, high-current spikes at the voltage peaks. Iridium oxide is increasingly used for stimulation electrodes and its impedance consists of an electrode-fluid interface capacitance in series with a fluid resistance. Capacitances are measured, for 400µm diameter electrod ...
... required current in short-duration, high-current spikes at the voltage peaks. Iridium oxide is increasingly used for stimulation electrodes and its impedance consists of an electrode-fluid interface capacitance in series with a fluid resistance. Capacitances are measured, for 400µm diameter electrod ...
Resistance is the opposition that a substance offers to the flow of
... What is Power Plant? A power plant or a power generating station, is basically an industrial location that is utilized for the generation and distribution of electric power in mass scale, usually in the order of several 1000 Watts. These are generally located at the sub-urban regions or several kilo ...
... What is Power Plant? A power plant or a power generating station, is basically an industrial location that is utilized for the generation and distribution of electric power in mass scale, usually in the order of several 1000 Watts. These are generally located at the sub-urban regions or several kilo ...
Single Phase Half Wave Rectifier with R
... During the positive half cycle, SCRs T1 and T2 are forward biased. At ωt = α, SCRs T1 and T3 are triggered, and then the current flows through the L – T1- R load – T3 – N. At ωt = π, supply voltage falls to zero and the current also goes to zero. Hence SCRs T1 and T3 turned off. During negative half ...
... During the positive half cycle, SCRs T1 and T2 are forward biased. At ωt = α, SCRs T1 and T3 are triggered, and then the current flows through the L – T1- R load – T3 – N. At ωt = π, supply voltage falls to zero and the current also goes to zero. Hence SCRs T1 and T3 turned off. During negative half ...
Diesel-Electric Propulsion Systems
... Frequency converters with pulse-width modulation (PWM converters) are self controlled converters designed with direct voltage intermediate circuit and consisting (in the standard solution) of diode rectifier at the mains side, insulated gate bipolar transistor (IGBT) or integrated gate commutated th ...
... Frequency converters with pulse-width modulation (PWM converters) are self controlled converters designed with direct voltage intermediate circuit and consisting (in the standard solution) of diode rectifier at the mains side, insulated gate bipolar transistor (IGBT) or integrated gate commutated th ...
Induction Motor and Self-Excited Induction Generator
... The induction motor is an alternating current (ac) rotating machine. Invented in 1888 by Nikola Tesla, it is by far the most widely used type of rotating electrical machine. It is the major workhorse in industry, agriculture, transportation, and domestic electric appliances. Typical applications inc ...
... The induction motor is an alternating current (ac) rotating machine. Invented in 1888 by Nikola Tesla, it is by far the most widely used type of rotating electrical machine. It is the major workhorse in industry, agriculture, transportation, and domestic electric appliances. Typical applications inc ...
S P E C I A L F... E L E C T R I C A L ... Input
... 2. Units are encapsulated with a low thermal resistance molding compound which has excellent chemical resistance, wide operating temperature range and good electrical properties under high humidity environments. The encapsulant and outer shell have UL94V-0 ratings. Lead material is brass with a sold ...
... 2. Units are encapsulated with a low thermal resistance molding compound which has excellent chemical resistance, wide operating temperature range and good electrical properties under high humidity environments. The encapsulant and outer shell have UL94V-0 ratings. Lead material is brass with a sold ...
Report - Sites@PSU
... loads. For the voltage into the regulator input, the specification was -24 V while in our circuit it ranged from -23.6 V to -27.8V with the ripple. With a maximum ripple of 3.6 V, the voltage into the regulator falls in the specified range. For the ripple, the input at Vc had a ripple of 4.2 V which ...
... loads. For the voltage into the regulator input, the specification was -24 V while in our circuit it ranged from -23.6 V to -27.8V with the ripple. With a maximum ripple of 3.6 V, the voltage into the regulator falls in the specified range. For the ripple, the input at Vc had a ripple of 4.2 V which ...
ACM - JNEC
... running conditions interchangeably. Such reversible motors are used for operating devices where frequent reversals are required like rheostat, induction regulators, furnace controls, valves etc. The motors which start with high value of capacitor in series with starting winding and run with low valu ...
... running conditions interchangeably. Such reversible motors are used for operating devices where frequent reversals are required like rheostat, induction regulators, furnace controls, valves etc. The motors which start with high value of capacitor in series with starting winding and run with low valu ...
AVR-20 ALTERNATOR VOLTAGE REGULATOR
... Basically the unit is compatible with all brushless type alternators. A stability adjustment potentiometer is also provided for this purpose. The AVR-20 has a special relay-less electronic circuit design. The required minimum residual voltage for build up is 5 VAC. The unit does not include moving p ...
... Basically the unit is compatible with all brushless type alternators. A stability adjustment potentiometer is also provided for this purpose. The AVR-20 has a special relay-less electronic circuit design. The required minimum residual voltage for build up is 5 VAC. The unit does not include moving p ...
Simulation of Induction Motor Characteristics Using A Circle Diagram
... be used for operating characteristics. III. CONCLUSIONS All motor’s performances, which determine its condition (starting, operating and control) is possible to obtain from experiments. But to do so, it is necessary to have corresponding equipment, a lot of time and energy, especially for high-power ...
... be used for operating characteristics. III. CONCLUSIONS All motor’s performances, which determine its condition (starting, operating and control) is possible to obtain from experiments. But to do so, it is necessary to have corresponding equipment, a lot of time and energy, especially for high-power ...
Sep 1999 Comparator Circuit Provides Automatic Shutdown of the LT1795 High Speed ADSL Power Amplifier
... In this circuit, an LT1795 is configured as a unity gain differential driver for a 100Ω transformer-coupled wire pair. The two comparators in an LT1720 package monitor the signals on each of the input lines to the driver amplifier. If the signal on either input exceeds the threshold set by the sensi ...
... In this circuit, an LT1795 is configured as a unity gain differential driver for a 100Ω transformer-coupled wire pair. The two comparators in an LT1720 package monitor the signals on each of the input lines to the driver amplifier. If the signal on either input exceeds the threshold set by the sensi ...
CD54HC160/3A CD54HCT160/3A Synchronous Presettable Counters Functional Diagram
... If a decade counter is preset to an illegal state or assumes an illegal state when power is applied, it will return to the normal sequence in one count. The look-ahead carry features simplifiers serial cascading of the counters. Both count enable inputs (PE and TE) must be high to count. The TE inpu ...
... If a decade counter is preset to an illegal state or assumes an illegal state when power is applied, it will return to the normal sequence in one count. The look-ahead carry features simplifiers serial cascading of the counters. Both count enable inputs (PE and TE) must be high to count. The TE inpu ...
Electricity And Load Shedding Monitoring
... the controller. Which convert analog input to digital output.It converts the analog input from the dp and gives digital output to controller. 5) RELAYS : Relays are components which allow a low-power circuit to switch a relatively high current on and off.. the current become zero it does load sheddi ...
... the controller. Which convert analog input to digital output.It converts the analog input from the dp and gives digital output to controller. 5) RELAYS : Relays are components which allow a low-power circuit to switch a relatively high current on and off.. the current become zero it does load sheddi ...
V. Caliskan, D.J. Perreault, T.M. Jahns, and J.G. Kassakian, “Analysis of Three-Phase Rectifiers with Constant-Voltage Loads,” IEEE Transactions on Circuits and Systems – I , Vol. 50, No. 9, Sept. 2003, pp. 1220-1226.
... filter when the dc-side impedance is much lower than the ac-side impedance (as may occur during heavy- or over-load conditions). Here, the ac-side inductance is due to line, filter, and transformer leakage reactances, while the dc-side filter and load act as a constant-voltage load. In all such appl ...
... filter when the dc-side impedance is much lower than the ac-side impedance (as may occur during heavy- or over-load conditions). Here, the ac-side inductance is due to line, filter, and transformer leakage reactances, while the dc-side filter and load act as a constant-voltage load. In all such appl ...
Variable-frequency drive
A variable-frequency drive (VFD) (also termed adjustable-frequency drive, variable-speed drive, AC drive, micro drive or inverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage.VFDs are used in applications ranging from small appliances to the largest of mine mill drives and compressors. However, around 25% of the world's electrical energy is consumed by electric motors in industrial applications, which are especially conducive for energy savings using VFDs in centrifugal load service, and VFDs' global market penetration for all applications is still relatively small. That lack of penetration highlights significant energy efficiency improvement opportunities for retrofitted and new VFD installations.Over the last four decades, power electronics technology has reduced VFD cost and size and has improved performance through advances in semiconductor switching devices, drive topologies, simulation and control techniques, and control hardware and software.VFDs are available in a number of different low- and medium-voltage AC-AC and DC-AC topologies.