S280-77-8
... accuracy of ± 5% of the 1000 A full scale level for a balanced, three phase system. The ACMA circuit consists of three isolated phase circuits (see Figure 3). Each phase circuit is the corresponding line current used by the Form 4C control for fault level detection and time–current curve (TCC) opera ...
... accuracy of ± 5% of the 1000 A full scale level for a balanced, three phase system. The ACMA circuit consists of three isolated phase circuits (see Figure 3). Each phase circuit is the corresponding line current used by the Form 4C control for fault level detection and time–current curve (TCC) opera ...
Fall 2012 - PumpTech, Inc.
... always be twice that voltage. Now, one might think voltage among the phases. A small voltage that this is a more efficient design than the Wye since unbalance of just 2% can result in a current unbalance the voltage doubles but, the Delta’s phase to phase of 12% to 16%. When the voltage supplying a ...
... always be twice that voltage. Now, one might think voltage among the phases. A small voltage that this is a more efficient design than the Wye since unbalance of just 2% can result in a current unbalance the voltage doubles but, the Delta’s phase to phase of 12% to 16%. When the voltage supplying a ...
Original Line Electric Actuator, Electric Thruster, Motor, and Driver Quick Start Manual
... Electrical noise can cause the drive to think that one step pulse is two or more pulses, resulting in extra motion and inaccurate motor and load positioning. To combat this problem, the drive includes a digital noise filter on the STEP and DIR inputs. The default factory setting of this filter is 15 ...
... Electrical noise can cause the drive to think that one step pulse is two or more pulses, resulting in extra motion and inaccurate motor and load positioning. To combat this problem, the drive includes a digital noise filter on the STEP and DIR inputs. The default factory setting of this filter is 15 ...
74LS221
... Throughout these ranges, pulse width is defined by the relationship: tw(out) = CextRext In2 ≈ 0.7 CextRext. In circuits where pulse cutoff is not critical, timing capacitance up to 1000 µF and timing resistance as low as 1.4 kΩ can be used. Also, the range of jitter-free output pulse widths is exten ...
... Throughout these ranges, pulse width is defined by the relationship: tw(out) = CextRext In2 ≈ 0.7 CextRext. In circuits where pulse cutoff is not critical, timing capacitance up to 1000 µF and timing resistance as low as 1.4 kΩ can be used. Also, the range of jitter-free output pulse widths is exten ...
GOLDMUND MIMESIS 18.4 POWER AMPLIFIER
... Turn OFF the amplifier immediately. When the source of DC offset is suppressed, turn ON the amplifier again. - Protection against HF oscillations. In the same way, the speaker must be protected against a large amount of high frequency oscillation if present to avoid any danger for the tweeters, even ...
... Turn OFF the amplifier immediately. When the source of DC offset is suppressed, turn ON the amplifier again. - Protection against HF oscillations. In the same way, the speaker must be protected against a large amount of high frequency oscillation if present to avoid any danger for the tweeters, even ...
Three Phase Circuits
... called a single phase system • If the current or voltage follows a phase difference 900 in a two windings , called two phase systems • If the phase difference is 1200 between voltages or currents in a three winding , called as Three phase systems • In poly-phase systems , there are more than three w ...
... called a single phase system • If the current or voltage follows a phase difference 900 in a two windings , called two phase systems • If the phase difference is 1200 between voltages or currents in a three winding , called as Three phase systems • In poly-phase systems , there are more than three w ...
TR41.7-09-11-005-MR1-2564
... This Bulletin is not intended to preclude or discourage other approaches which similarly represent good engineering practice, or which may be acceptable to, or have been accepted by, appropriate bodies such as the Federal Communications Commission [FCC]. Parties who wish other approaches to be consi ...
... This Bulletin is not intended to preclude or discourage other approaches which similarly represent good engineering practice, or which may be acceptable to, or have been accepted by, appropriate bodies such as the Federal Communications Commission [FCC]. Parties who wish other approaches to be consi ...
Evaluates: MAX8728 MAX8728 Evaluation Kit General Description Features
... component changes. See the Switching Frequency Selection (FSEL) section. As configured, the step-down switching regulator (OUT1) generates a +3.3V output and can provide at least 2A. The step-down switching-regulator output voltage can be adjusted from 2V to 3.6V by replacing feedback resistors R1 a ...
... component changes. See the Switching Frequency Selection (FSEL) section. As configured, the step-down switching regulator (OUT1) generates a +3.3V output and can provide at least 2A. The step-down switching-regulator output voltage can be adjusted from 2V to 3.6V by replacing feedback resistors R1 a ...
User`s Guide True RMS Multimeter Extech 430
... 35VDC. These voltages are considered a shock hazard. ...
... 35VDC. These voltages are considered a shock hazard. ...
Lecture 10 - UniMAP Portal
... The turning propellers of the wind-power station are connected directly to the shaft of an ac generator. ...
... The turning propellers of the wind-power station are connected directly to the shaft of an ac generator. ...
Using Op Amps as Comparators INTRODUCTION by James Bryant
... This can be done with two resistors; the amount of hysteresis is proportional to their ratio. The signal input to the comparator may be applied to either the inverting or the noninverting input, but if it is applied to the noninverting input, the source impedance must be low enough to have an insign ...
... This can be done with two resistors; the amount of hysteresis is proportional to their ratio. The signal input to the comparator may be applied to either the inverting or the noninverting input, but if it is applied to the noninverting input, the source impedance must be low enough to have an insign ...
Current Measurement
... environment. Is there a fundamental unit of electricity or are the electrical units derived from more basic things such as mass, length, and time? Standards laboratories such as the U.S. National Institute of Standards and Technology, NIST, measure the force between current carrying wires to compare ...
... environment. Is there a fundamental unit of electricity or are the electrical units derived from more basic things such as mass, length, and time? Standards laboratories such as the U.S. National Institute of Standards and Technology, NIST, measure the force between current carrying wires to compare ...
TPS6212x 15-V, 75-mA Highly Efficient Buck
... The wide operating input voltage range of 2 V to 15 V supports energy harvesting, battery powered and as well 9-V or 12-V line powered applications. With its advanced hysteretic control scheme, the converter provides power save mode operation. At light loads the converter operates in pulse frequency ...
... The wide operating input voltage range of 2 V to 15 V supports energy harvesting, battery powered and as well 9-V or 12-V line powered applications. With its advanced hysteretic control scheme, the converter provides power save mode operation. At light loads the converter operates in pulse frequency ...
Regent VL71i - Victor Lighting
... colour. Due to the need to control photometric performance and certification conditions, and avoid incorrect lamps being fitted, the type of lamp and size is specified on the rating plate. If mixed installations are used, care must be taken to ensure that the correct lamp is fitted on installation a ...
... colour. Due to the need to control photometric performance and certification conditions, and avoid incorrect lamps being fitted, the type of lamp and size is specified on the rating plate. If mixed installations are used, care must be taken to ensure that the correct lamp is fitted on installation a ...
HMMC-5027 2 to 26.5 GHz Medium Power Amplifier
... The HMMC-5027 is a DC coupled amplifier. External coupling capacitors are needed on RFIN and RF OUT ports. The drain bias pad is connected to RF and must be decoupled to the lowest operating frequency. The auxiliary gate and drain contacts are provided when performance below 1 GHz is required. Conne ...
... The HMMC-5027 is a DC coupled amplifier. External coupling capacitors are needed on RFIN and RF OUT ports. The drain bias pad is connected to RF and must be decoupled to the lowest operating frequency. The auxiliary gate and drain contacts are provided when performance below 1 GHz is required. Conne ...
Cascadable Three-Input Single-Output Current-Mode Universal Filter Using CDBAs
... a current differencing buffered amplifier (CDBA), has received much attention. Many applications in active filter design based on CDBA were reported in the literature [1]-[9]. They have been demonstrated that the CDBA is a versatile active building block for voltage- and current-mode signal processi ...
... a current differencing buffered amplifier (CDBA), has received much attention. Many applications in active filter design based on CDBA were reported in the literature [1]-[9]. They have been demonstrated that the CDBA is a versatile active building block for voltage- and current-mode signal processi ...
AN EFFICIENT BRAKING ALGORITHM FOR INTERIOR
... neglected in this case, assuming that ZDAC (Zero D-Axis Current) control strategy is being used. Also, in the case of IPMSM motors, inductance Lsq is generally greater than Lsd resulting in negative reluctance torque for positive values of isd current. Due to very high value of braking currents, sta ...
... neglected in this case, assuming that ZDAC (Zero D-Axis Current) control strategy is being used. Also, in the case of IPMSM motors, inductance Lsq is generally greater than Lsd resulting in negative reluctance torque for positive values of isd current. Due to very high value of braking currents, sta ...
Rectifier
A rectifier is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction. The process is known as rectification. Physically, rectifiers take a number of forms, including vacuum tube diodes, mercury-arc valves, copper and selenium oxide rectifiers, semiconductor diodes, silicon-controlled rectifiers and other silicon-based semiconductor switches. Historically, even synchronous electromechanical switches and motors have been used. Early radio receivers, called crystal radios, used a ""cat's whisker"" of fine wire pressing on a crystal of galena (lead sulfide) to serve as a point-contact rectifier or ""crystal detector"".Rectifiers have many uses, but are often found serving as components of DC power supplies and high-voltage direct current power transmission systems. Rectification may serve in roles other than to generate direct current for use as a source of power. As noted, detectors of radio signals serve as rectifiers. In gas heating systems flame rectification is used to detect presence of a flame.Because of the alternating nature of the input AC sine wave, the process of rectification alone produces a DC current that, though unidirectional, consists of pulses of current. Many applications of rectifiers, such as power supplies for radio, television and computer equipment, require a steady constant DC current (as would be produced by a battery). In these applications the output of the rectifier is smoothed by an electronic filter (usually a capacitor) to produce a steady current.More complex circuitry that performs the opposite function, converting DC to AC, is called an inverter.