Power XpertTM 4000/6000/8000 Power Quality Meters
... The Web server also provides the energy and demand readings required to help manage the cost of energy. Readings include KWh, KVARh, delivered and received and KVAh with time of use and separate status input controlled energy accumulation to account for energy during special times such as rate alert ...
... The Web server also provides the energy and demand readings required to help manage the cost of energy. Readings include KWh, KVARh, delivered and received and KVAh with time of use and separate status input controlled energy accumulation to account for energy during special times such as rate alert ...
Experiment 9
... In the circuit shown in Figure 9-1 below, the source voltage, Vs, is “chopped” to produce an average voltage somewhere between 0% and 100% of Vs. Thus the average value of the voltage applied to the Motor, Vm, is controlled by closing and opening the “switch”, Q1. To close the switch, a firing signa ...
... In the circuit shown in Figure 9-1 below, the source voltage, Vs, is “chopped” to produce an average voltage somewhere between 0% and 100% of Vs. Thus the average value of the voltage applied to the Motor, Vm, is controlled by closing and opening the “switch”, Q1. To close the switch, a firing signa ...
stepper motors - WordPress.com
... • Apply +12V (generally) and they start rotating. Apply -12V and they rotate in the opposite direction! • Speed can be reduced by reducing the voltage supplied, however that’s not an efficient way of doing things. • Torque and speed are interrelated. A 10rpm motor has relatively high torque. General ...
... • Apply +12V (generally) and they start rotating. Apply -12V and they rotate in the opposite direction! • Speed can be reduced by reducing the voltage supplied, however that’s not an efficient way of doing things. • Torque and speed are interrelated. A 10rpm motor has relatively high torque. General ...
Simulink Model of Parallel Resonant Inverter with DSP Based PLL
... frequency resonant power conversion. Among them current source topology has short circuit protection capability, and power switches can be driven with a simple gate drive circuit. Current source parallel resonant topology is used in many applications such as induction heaters [1]–[5], inverters [6]– ...
... frequency resonant power conversion. Among them current source topology has short circuit protection capability, and power switches can be driven with a simple gate drive circuit. Current source parallel resonant topology is used in many applications such as induction heaters [1]–[5], inverters [6]– ...
Contents - Siemens
... 2 This column defines currents which must be switched on or off in the worst case for: – Overloaded and loaded transformers: This does not refer to transformers with special loads such as motors, generators, converters and arc furnaces. – Earth-fault reactors: In case of earth fault, full operating ...
... 2 This column defines currents which must be switched on or off in the worst case for: – Overloaded and loaded transformers: This does not refer to transformers with special loads such as motors, generators, converters and arc furnaces. – Earth-fault reactors: In case of earth fault, full operating ...
1 Practical Logic Characteristics
... characteristic where the slope is –1. This is done on the basis of the effect on the circuit which applies to noise and interference components superimposed on the logic signal. Consider slowly changing the input voltage from one logic state to another. Increasing Vi from 0V, the output voltage fall ...
... characteristic where the slope is –1. This is done on the basis of the effect on the circuit which applies to noise and interference components superimposed on the logic signal. Consider slowly changing the input voltage from one logic state to another. Increasing Vi from 0V, the output voltage fall ...
Fluke Clamp Meters
... 1400 A ac rms and 2000 A dc • Highest safety rating: CAT IV 600 V rated for use at the service entrance • Accurate in noisy environments: Using low-pass filter, the clamp meter performs even with distorted waveforms ...
... 1400 A ac rms and 2000 A dc • Highest safety rating: CAT IV 600 V rated for use at the service entrance • Accurate in noisy environments: Using low-pass filter, the clamp meter performs even with distorted waveforms ...
Conservation of Electric Charges
... • Electric circuits – complete closed path through which electric charges flow • All circuits have 3 basic parts – load, energy source & wires – Load – radio, fan, transforms electrical energy into another energy – Energy source – outlets, batteries – Also have switch – used to open or close circuit ...
... • Electric circuits – complete closed path through which electric charges flow • All circuits have 3 basic parts – load, energy source & wires – Load – radio, fan, transforms electrical energy into another energy – Energy source – outlets, batteries – Also have switch – used to open or close circuit ...
Distribution Network Capacitor Resonance – A Case
... Capacitors are used in banks by distribution companies, such as Country Energy, to correct poor power factor, to provide voltage support and minimise losses. These capacitors can resonate at or around the 5th or 7th harmonic if measures aren’t taken to prevent such resonance. Harmonic resonances ca ...
... Capacitors are used in banks by distribution companies, such as Country Energy, to correct poor power factor, to provide voltage support and minimise losses. These capacitors can resonate at or around the 5th or 7th harmonic if measures aren’t taken to prevent such resonance. Harmonic resonances ca ...
Zigbee Nation
... wirelessly send data back to a central terminal – Data displayed on LCD – Zigbee is used to transmit and receive Data – Audio and Visual Warnings will be given if a sensor detects something has fallen below the threshold. ...
... wirelessly send data back to a central terminal – Data displayed on LCD – Zigbee is used to transmit and receive Data – Audio and Visual Warnings will be given if a sensor detects something has fallen below the threshold. ...
Design Review
... iron powder cores which had a relative permeability of 75μo. Iron powder composed cores are known to possess a flux density of at least one Tesla and are also much smaller in size as opposed to a ferrite core of similar specifications. The toroidal shape by geometry tends to minimize leakage flux an ...
... iron powder cores which had a relative permeability of 75μo. Iron powder composed cores are known to possess a flux density of at least one Tesla and are also much smaller in size as opposed to a ferrite core of similar specifications. The toroidal shape by geometry tends to minimize leakage flux an ...
1. Introduction - About the journal
... = I1/I2). The output impedance at the port W is low, since it is looking into the emitters of translinear cell’s transistors, while the output impedances of the ports ±Z are very high due to the effective parallel combination of output impedances of the current mirrors. Therefore, this device will p ...
... = I1/I2). The output impedance at the port W is low, since it is looking into the emitters of translinear cell’s transistors, while the output impedances of the ports ±Z are very high due to the effective parallel combination of output impedances of the current mirrors. Therefore, this device will p ...
International Electrical Engineering Journal (IEEJ) Vol. 5 (2014) No.9, pp. 1539-1544
... performance of a power system and for analyzing the effectiveness of alternative plans for system expansion to meet increased load demand. These analyses require the calculation of numerous load flows for both normal and emergency operating conditions. The load flow problem consists of the calculati ...
... performance of a power system and for analyzing the effectiveness of alternative plans for system expansion to meet increased load demand. These analyses require the calculation of numerous load flows for both normal and emergency operating conditions. The load flow problem consists of the calculati ...
MAX8536EVKIT
... The IC controller features a dual-purpose TIMER input that sets the charge-pump frequency or functions as a logic enabler. The EV kit circuit provides a 3-pin jumper (JU1) to configure the TIMER pin. Place a shunt across pins 2-3 of JU1 to shut down the IC. Place a shunt across pins 1-2 of JU1 to co ...
... The IC controller features a dual-purpose TIMER input that sets the charge-pump frequency or functions as a logic enabler. The EV kit circuit provides a 3-pin jumper (JU1) to configure the TIMER pin. Place a shunt across pins 2-3 of JU1 to shut down the IC. Place a shunt across pins 1-2 of JU1 to co ...
Doubly-fed induction generator (DFIG) as a hybrid of asynchronous
... at rotor speed, ωm , is possible in the DFIG because the power electronic converter across the slip rings supplies the balanced wound rotor windings with slip frequency ωr = (ωs − ωm ) currents which produce a rotor magnetic flux ΦR which rotates at (ωm + ωs − ωm ) in synchronism with the speed ωs o ...
... at rotor speed, ωm , is possible in the DFIG because the power electronic converter across the slip rings supplies the balanced wound rotor windings with slip frequency ωr = (ωs − ωm ) currents which produce a rotor magnetic flux ΦR which rotates at (ωm + ωs − ωm ) in synchronism with the speed ωs o ...
C4800A Series
... (decoupling diode): For redundant operation the outputs of two or more units are paralleled behind de-coupling diodes so that an internal fault of one module does not affect the operation of the others. These diodes cause power losses. (active current sharing): An additional control circuit provides ...
... (decoupling diode): For redundant operation the outputs of two or more units are paralleled behind de-coupling diodes so that an internal fault of one module does not affect the operation of the others. These diodes cause power losses. (active current sharing): An additional control circuit provides ...
STEPPER MOTORS
... • Apply +12V (generally) and they start rotating. Apply -12V and they rotate in the opposite direction! • Speed can be reduced by reducing the voltage supplied, however that’s not an efficient way of doing things. • Torque and speed are interrelated. A 10rpm motor has relatively high torque. General ...
... • Apply +12V (generally) and they start rotating. Apply -12V and they rotate in the opposite direction! • Speed can be reduced by reducing the voltage supplied, however that’s not an efficient way of doing things. • Torque and speed are interrelated. A 10rpm motor has relatively high torque. General ...
Alternating current
Alternating current (AC), is an electric current in which the flow of electric charge periodically reverses direction, whereas in direct current (DC, also dc), the flow of electric charge is only in one direction. The abbreviations AC and DC are often used to mean simply alternating and direct, as when they modify current or voltage.AC is the form in which electric power is delivered to businesses and residences. The usual waveform of alternating current in most electric power circuits is a sine wave. In certain applications, different waveforms are used, such as triangular or square waves. Audio and radio signals carried on electrical wires are also examples of alternating current. These types of alternating current carry information encoded (or modulated) onto the AC signal, such as sound (audio) or images (video).