NCP4326 - Switchmode Power Supply Controller
... This pin enables or disables the driver 2. An internal current source with an external capacitor generates also a soft−start feature for limiting the startup peak current on the controlled output. This pin can be left open and by default it enables the driver 2, but without soft−start ...
... This pin enables or disables the driver 2. An internal current source with an external capacitor generates also a soft−start feature for limiting the startup peak current on the controlled output. This pin can be left open and by default it enables the driver 2, but without soft−start ...
A New Definition of Mutual Impedance between Two Coils for
... isolation. These extremely small percentage errors indicate the accurate quantification of the mutual coupling effect by the new mutual impedances and justify their usefulness. It is interesting to note that the expressions in (5) do not even require the knowledge of the self-impedance of the coils ...
... isolation. These extremely small percentage errors indicate the accurate quantification of the mutual coupling effect by the new mutual impedances and justify their usefulness. It is interesting to note that the expressions in (5) do not even require the knowledge of the self-impedance of the coils ...
Beam Diagnostics - Studentportalen
... • An alternating voltage (Vp) applied to the primary side produces an alternating voltage (Vs) in a secondary circuit. • The relationship between the voltages and the number of turns in the windings is given by Vs/Vp = Ns/Np. ...
... • An alternating voltage (Vp) applied to the primary side produces an alternating voltage (Vs) in a secondary circuit. • The relationship between the voltages and the number of turns in the windings is given by Vs/Vp = Ns/Np. ...
Protective Relay Application Guide
... When transformer feeder protection is being considered it is advisable to use relays having an instantaneous high-set unit. This is set above the secondary short-circuit level and transformer in-rush current, which then allows the operating time of upstream relays to be reduced thereby reducing the ...
... When transformer feeder protection is being considered it is advisable to use relays having an instantaneous high-set unit. This is set above the secondary short-circuit level and transformer in-rush current, which then allows the operating time of upstream relays to be reduced thereby reducing the ...
Wood Group Turbine Generator Services Overview
... measured and recorded. The ohm values are calculated and graphed against the applicable voltage levels. This is another method of testing for turn-to-turn shorts. An AC impedance test may be performed either with the rotor at rest, or at any desired speed. ...
... measured and recorded. The ohm values are calculated and graphed against the applicable voltage levels. This is another method of testing for turn-to-turn shorts. An AC impedance test may be performed either with the rotor at rest, or at any desired speed. ...
Activity 8C
... Fig, 8.5 : Full-wave rectifier with center-tapped transformer Figure 8.5(b) shows a full-wave, bridge rectifier circuit. Notice that this circuit provides twice as much dc voltage as does the previous full-wave circuit when both circuits use the same transformer. The bridge rectifier circuit does no ...
... Fig, 8.5 : Full-wave rectifier with center-tapped transformer Figure 8.5(b) shows a full-wave, bridge rectifier circuit. Notice that this circuit provides twice as much dc voltage as does the previous full-wave circuit when both circuits use the same transformer. The bridge rectifier circuit does no ...
MAX8759 Low-Cost, SMBus, CCFL Backlight Controller General Description Features
... (CCFL) inverter controller is designed to drive CCFLs using a full-bridge resonant inverter. The resonant operation ensures reliable striking and provides near-sinusoidal waveforms over the entire input range. The controller operates over a wide input-voltage range of 4.5V to 28V with high power to ...
... (CCFL) inverter controller is designed to drive CCFLs using a full-bridge resonant inverter. The resonant operation ensures reliable striking and provides near-sinusoidal waveforms over the entire input range. The controller operates over a wide input-voltage range of 4.5V to 28V with high power to ...
what you should know about scr power controllers - McGoff
... The electronic circuit controls the operation of the SCRs such that the desired energy applied to the load is proportional to the command signal. Important tasks of the circuit include: Timing: It is imperative, particularly in applications involving inductive loads such as transformers, that no DC ...
... The electronic circuit controls the operation of the SCRs such that the desired energy applied to the load is proportional to the command signal. Important tasks of the circuit include: Timing: It is imperative, particularly in applications involving inductive loads such as transformers, that no DC ...
Document
... without a high-side ring bus. The possibility exists for the transfer of power between the two sources, whereby current flows from one source down through its associated transformer, through the secondary buses, and back up through the adjacent transformer to the second source. This is generally nei ...
... without a high-side ring bus. The possibility exists for the transfer of power between the two sources, whereby current flows from one source down through its associated transformer, through the secondary buses, and back up through the adjacent transformer to the second source. This is generally nei ...
... 3.17 rotor, flexible: A rotor that, owing to its elastic deflection, cannot be termed a rigid rotor. 3.18 rotor, rigid: A rotor is considered rigid if it can be corrected in any two (arbitrarily selected) planes and, after it has been corrected, its unbalance does not significantly exceed the balanc ...
Material Name: - 8 MVA, 33/11KV POWER TRANSFORMER
... final inspection and testing before dispatch, packing and delivery at destination Sub-station by road transport, transit insurance, unloading at site /stores of 8 MVA, 33/11 KV Power Transformer(s), complete with all fittings, accessories, associated equipments, spares, 10% extra Transformer Oil, re ...
... final inspection and testing before dispatch, packing and delivery at destination Sub-station by road transport, transit insurance, unloading at site /stores of 8 MVA, 33/11 KV Power Transformer(s), complete with all fittings, accessories, associated equipments, spares, 10% extra Transformer Oil, re ...
Power Distribution Systems
... 4. Maximum Flexibility and Expendability: In many industrial manufacturing plants, electrical utilization loads are periodically relocated or changed requiring changes in the electrical distribution system. Consideration of the layout and design of the electrical distribution system to accommodate t ...
... 4. Maximum Flexibility and Expendability: In many industrial manufacturing plants, electrical utilization loads are periodically relocated or changed requiring changes in the electrical distribution system. Consideration of the layout and design of the electrical distribution system to accommodate t ...
Stakeholder Comment and Replies Matrix AESO AUTHORITATIVE DOCUMENT PROCESS Alberta Reliability Standard
... facility be removed from the applicability section of this standard. The removal of these entities would be consistent with the findings of NERC Order 733 which states in paragraph 342: The Reliability Standard applies to facilities 100 kV and above and to transformers with lowvoltage terminals 200 ...
... facility be removed from the applicability section of this standard. The removal of these entities would be consistent with the findings of NERC Order 733 which states in paragraph 342: The Reliability Standard applies to facilities 100 kV and above and to transformers with lowvoltage terminals 200 ...
Transformer
A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction. Commonly, transformers are used to increase or decrease the voltages of alternating current in electric power applications.A varying current in the transformer's primary winding creates a varying magnetic flux in the transformer core and a varying magnetic field impinging on the transformer's secondary winding. This varying magnetic field at the secondary winding induces a varying electromotive force (EMF) or voltage in the secondary winding. Making use of Faraday's Law in conjunction with high magnetic permeability core properties, transformers can thus be designed to efficiently change AC voltages from one voltage level to another within power networks.Since the invention of the first constant potential transformer in 1885, transformers have become essential for the transmission, distribution, and utilization of alternating current electrical energy. A wide range of transformer designs are encountered in electronic and electric power applications. Transformers range in size from RF transformers less than a cubic centimeter in volume to units interconnecting the power grid weighing hundreds of tons.