Surge arrestors John VA7JW outlines coaxial in
... The Surge Arrestors described in these notes are economy devices installed in series with a coaxial feed line to protect radio equipment from damage induced by lightning. There are many devices available ranging in sophistication, features, protection and cost. The two types studied here are basic, ...
... The Surge Arrestors described in these notes are economy devices installed in series with a coaxial feed line to protect radio equipment from damage induced by lightning. There are many devices available ranging in sophistication, features, protection and cost. The two types studied here are basic, ...
Simulation of Active Filtering Applied to A Computer Centre
... discussed previously has the ability to balance the asymmetrical current. This is because the CC-VSI is operated to directly control the AC grid current to follow a three-phase balanced sinusoidal reference signal without measuring and determining the negative sequence component. Once the grid curre ...
... discussed previously has the ability to balance the asymmetrical current. This is because the CC-VSI is operated to directly control the AC grid current to follow a three-phase balanced sinusoidal reference signal without measuring and determining the negative sequence component. Once the grid curre ...
ERMCO
... rating and the permissible connections. No connections other than those shown on the nameplate should be made; and none of the connections should be changed while voltage is applied to the transformer. For low voltage connections, the loads between the line terminals and neutral should be as ...
... rating and the permissible connections. No connections other than those shown on the nameplate should be made; and none of the connections should be changed while voltage is applied to the transformer. For low voltage connections, the loads between the line terminals and neutral should be as ...
University Improves Sustainability of HVAC Motors in
... The cumulative bearing damage caused by VFD-induced shaft voltages and resulting bearing currents is often overlooked until it is too late to save the motor. The high peak voltages and extremely fast voltage rise times (dv/dt) associated with the insulated gate bipolar transistors (IGBTs) found in t ...
... The cumulative bearing damage caused by VFD-induced shaft voltages and resulting bearing currents is often overlooked until it is too late to save the motor. The high peak voltages and extremely fast voltage rise times (dv/dt) associated with the insulated gate bipolar transistors (IGBTs) found in t ...
RSM002P03
... The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants cont ...
... The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants cont ...
HMC855LC5 数据资料DataSheet下载
... [1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Arlon 25FR or Rogers 4350 ...
... [1] Reference this number when ordering complete evaluation PCB [2] Circuit Board Material: Arlon 25FR or Rogers 4350 ...
US5U30
... The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants cont ...
... The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants cont ...
S280-42-1
... the safe operation of the equipment described. Only competent technicians who are familiar with this equipment should install, operate, and service it. A competent technician has these qualifications: • Is thoroughly familiar with these instructions. • Is trained in industry-accepted high- and l ...
... the safe operation of the equipment described. Only competent technicians who are familiar with this equipment should install, operate, and service it. A competent technician has these qualifications: • Is thoroughly familiar with these instructions. • Is trained in industry-accepted high- and l ...
Document13 (Page 1)
... completely protect complex installations. In those cases, a systemic approach using multiple protectors must be employed. Systemic protection requires professional design. AC power, satellite cables, CATV cables, telephone/network lines or any other signal lines entering the system that do not pass ...
... completely protect complex installations. In those cases, a systemic approach using multiple protectors must be employed. Systemic protection requires professional design. AC power, satellite cables, CATV cables, telephone/network lines or any other signal lines entering the system that do not pass ...
“Excite” With Recent Win from Custom Retailer Magazine
... silver bezel is available to match other silver components. The M5500-EX also employs Panamax’s leading Protect or Disconnect™ Circuitry, which safeguards equipment from catastrophic surges such as lightning by completely disconnecting the AC power to the connected equipment. Also featured is Panama ...
... silver bezel is available to match other silver components. The M5500-EX also employs Panamax’s leading Protect or Disconnect™ Circuitry, which safeguards equipment from catastrophic surges such as lightning by completely disconnecting the AC power to the connected equipment. Also featured is Panama ...
excitation systems
... these functions depending on the specific application and the type of exciter control functions regulate specific quantities at the desired level limiting functions prevent certain quantities from exceeding set limits if any of the limiters fail, then protective functions remove appropriate co ...
... these functions depending on the specific application and the type of exciter control functions regulate specific quantities at the desired level limiting functions prevent certain quantities from exceeding set limits if any of the limiters fail, then protective functions remove appropriate co ...
Application of network analyzer in measuring the
... (1) The use of differential probes should be avoided. In the case of isolated power supplies, if possible, short the ground of secondary, primary and control circuitry. (2) While measuring for switching power supplies, the use of lowest bandwidth results in best noise rejection. For a faster sweep s ...
... (1) The use of differential probes should be avoided. In the case of isolated power supplies, if possible, short the ground of secondary, primary and control circuitry. (2) While measuring for switching power supplies, the use of lowest bandwidth results in best noise rejection. For a faster sweep s ...
ENGR-211: Engineering Physics II
... Apply the Laws of Thermodynamics to simple physics systems involving work in and out as well as heat flows. State and apply the two laws of thermodynamics to discussions and problems solving relating to them. Acquire an understanding of the elementary concepts of static electricity. Acquire the abil ...
... Apply the Laws of Thermodynamics to simple physics systems involving work in and out as well as heat flows. State and apply the two laws of thermodynamics to discussions and problems solving relating to them. Acquire an understanding of the elementary concepts of static electricity. Acquire the abil ...
section 260573 - overcurrent protective device coordination study
... B. Appropriate motor short-circuit contribution shall be included at the appropriate locations in the system so that the computer calculated values represent the highest short-circuit current the equipment will be subjected to under fault conditions. C. A tabular computer printout shall be included ...
... B. Appropriate motor short-circuit contribution shall be included at the appropriate locations in the system so that the computer calculated values represent the highest short-circuit current the equipment will be subjected to under fault conditions. C. A tabular computer printout shall be included ...
Synchronous Generator is a doubly excited machine
... conductors (N1 and N2) in each power system. 3, Y/Y connection requires the use of three transformers, and if any one transformer becomes fault or disabled, the whole group might become disabled. Nevertheless, the star connected three phase transformer is especially convenient and economical in elec ...
... conductors (N1 and N2) in each power system. 3, Y/Y connection requires the use of three transformers, and if any one transformer becomes fault or disabled, the whole group might become disabled. Nevertheless, the star connected three phase transformer is especially convenient and economical in elec ...
5-Components1-24 June 2014.cwk (DR).
... Terminals. The Resistive Track is either a Fixed Carbon Resistor for low Power and high Values or a Fixed Wire Wound Resistor for high Power. A Slider which makes contact with the Track and moves along it, is connected to the middle Terminal. The moving Slider changes the Resistance between middle a ...
... Terminals. The Resistive Track is either a Fixed Carbon Resistor for low Power and high Values or a Fixed Wire Wound Resistor for high Power. A Slider which makes contact with the Track and moves along it, is connected to the middle Terminal. The moving Slider changes the Resistance between middle a ...
pat2817708_fender.pdf
... of the primary winding of output transformer $4. The 15 provide for coupling different sound sources to the tremolo amplifier thus far described. Thus, one sound source voltage developed in the secondary winding of transformer 84 is applied to the speaker 16 through plugs 85 and 86. may be connected ...
... of the primary winding of output transformer $4. The 15 provide for coupling different sound sources to the tremolo amplifier thus far described. Thus, one sound source voltage developed in the secondary winding of transformer 84 is applied to the speaker 16 through plugs 85 and 86. may be connected ...
Detection of selected EMI Sources in the Prototype of LED Street Light
... Electric equipment and systems are always subjected to electromagnetic disturbance. The location and layout of power components, cable routing, shielding, etc. are important right from the initial design phase. Also any electric equipment is, itself, an electromagnetic disturbance generator. Circuit ...
... Electric equipment and systems are always subjected to electromagnetic disturbance. The location and layout of power components, cable routing, shielding, etc. are important right from the initial design phase. Also any electric equipment is, itself, an electromagnetic disturbance generator. Circuit ...
Analog Output Module, 16-Bit, 4 Isolated Outputs
... The scaling for each channel can be configured independently. Scaling is configured by selecting corresponding low and high engineering units values and low and high span values for two points. ...
... The scaling for each channel can be configured independently. Scaling is configured by selecting corresponding low and high engineering units values and low and high span values for two points. ...
Voltage and Current harmonics caused by Power Factor
... Abstract-- Lamp tube (TL) lamp with conventional ballast has a low power factor, so it is necessary to increase the power factor by adding a capacitor. Capacitors including non-linear load, so that the addition of the capacitor causing an increase in nonlinear loads. Nonlinear load provides output w ...
... Abstract-- Lamp tube (TL) lamp with conventional ballast has a low power factor, so it is necessary to increase the power factor by adding a capacitor. Capacitors including non-linear load, so that the addition of the capacitor causing an increase in nonlinear loads. Nonlinear load provides output w ...
DYNAMO AND REGULATOR Most /2 BMW`s are equiped with a 6
... voltage drops gradually. Thus the setting of the regulator is a compromise. The voltage is too high when there are not much consumers, thus boiling the battery, and it is too low when everyting is switched on, thus starving the battery. The regulator is also sensitive for temperature. The higher the ...
... voltage drops gradually. Thus the setting of the regulator is a compromise. The voltage is too high when there are not much consumers, thus boiling the battery, and it is too low when everyting is switched on, thus starving the battery. The regulator is also sensitive for temperature. The higher the ...
Ground (electricity)
In electrical engineering, ground or earth is the reference point in an electrical circuit from which voltages are measured, a common return path for electric current, or a direct physical connection to the Earth.Electrical circuits may be connected to ground (earth) for several reasons. In mains powered equipment, exposed metal parts are connected to ground to prevent user contact with dangerous voltage if electrical insulation fails. Connections to ground limit the build-up of static electricity when handling flammable products or electrostatic-sensitive devices. In some telegraph and power transmission circuits, the earth itself can be used as one conductor of the circuit, saving the cost of installing a separate return conductor (see single-wire earth return).For measurement purposes, the Earth serves as a (reasonably) constant potential reference against which other potentials can be measured. An electrical ground system should have an appropriate current-carrying capability to serve as an adequate zero-voltage reference level. In electronic circuit theory, a ""ground"" is usually idealized as an infinite source or sink for charge, which can absorb an unlimited amount of current without changing its potential. Where a real ground connection has a significant resistance, the approximation of zero potential is no longer valid. Stray voltages or earth potential rise effects will occur, which may create noise in signals or if large enough will produce an electric shock hazard.The use of the term ground (or earth) is so common in electrical and electronics applications that circuits in portable electronic devices such as cell phones and media players as well as circuits in vehicles may be spoken of as having a ""ground"" connection without any actual connection to the Earth, despite ""common"" being a more appropriate term for such a connection. This is usually a large conductor attached to one side of the power supply (such as the ""ground plane"" on a printed circuit board) which serves as the common return path for current from many different components in the circuit.