Low Field NMR Spectrometer
... Nuclear magnetic resonance, or NMR, is a phenomenon which occurs when the nuclei of certain atoms are immersed in a static magnetic field and exposed to a second oscillating magnetic field. Some nuclei experience this phenomenon, and others do not, dependent upon whether they possess a property call ...
... Nuclear magnetic resonance, or NMR, is a phenomenon which occurs when the nuclei of certain atoms are immersed in a static magnetic field and exposed to a second oscillating magnetic field. Some nuclei experience this phenomenon, and others do not, dependent upon whether they possess a property call ...
EZCT Turns Ratio Measurement
... Since there is no secondary winding on the shunt reactor, the V3 voltage cannot be eliminated from the connection. The turns-ratio measurement from using this method will always have some built-in error. The amount of error depends on the size of the reactor winding and the number of turns on the CT ...
... Since there is no secondary winding on the shunt reactor, the V3 voltage cannot be eliminated from the connection. The turns-ratio measurement from using this method will always have some built-in error. The amount of error depends on the size of the reactor winding and the number of turns on the CT ...
solenoid and pressure-operated valve technology
... variations in the pressure differential (∆P) across the valve. Repeatability The spread in the flow rates is called the repeatability. 7 - Features of a proportional solenoid valve -C losed loop control systems - The possibility of controlling the valves by means of electrical inputs from sensors ...
... variations in the pressure differential (∆P) across the valve. Repeatability The spread in the flow rates is called the repeatability. 7 - Features of a proportional solenoid valve -C losed loop control systems - The possibility of controlling the valves by means of electrical inputs from sensors ...
Hola Agustin - Portal UniMAP
... When the load switch in the secondary circuit of the transformer in Fig 2-7 is closed, a current IX, equal to VX divided by the load impedance, will flow. By Lenz’s law, any current caused to flow by an induced emf flows in such direction as to oppose the action that causes the emf to be induced. In ...
... When the load switch in the secondary circuit of the transformer in Fig 2-7 is closed, a current IX, equal to VX divided by the load impedance, will flow. By Lenz’s law, any current caused to flow by an induced emf flows in such direction as to oppose the action that causes the emf to be induced. In ...
New algorithms to improve the sensitivity of differential protection of
... The suggested method is based on the tap changer position monitoring which gives a signal to the digital relay. The position of the tap changer can be detected and communicated to the protection by different ways: - detection with binary input signals to the protection relay. The stepping can be dif ...
... The suggested method is based on the tap changer position monitoring which gives a signal to the digital relay. The position of the tap changer can be detected and communicated to the protection by different ways: - detection with binary input signals to the protection relay. The stepping can be dif ...
Actuators - University of Detroit Mercy
... electrical device on or off • Solenoid type devices: current through a coil activates an iron core that controls a hydraulic or pneumatic valve • Drive systems: D.C. and A.C. motors, where a current through a motor produces rotation ...
... electrical device on or off • Solenoid type devices: current through a coil activates an iron core that controls a hydraulic or pneumatic valve • Drive systems: D.C. and A.C. motors, where a current through a motor produces rotation ...
As we discussed earlier capacitors and coils resist the flow
... As we discussed earlier capacitors and coils resist the flow of current through them. As has been noted their resistance to current flow is called reactance. When these two reactance’s are combined the combined reactance is referred to as impedance. Notice we said combined rather than added. We will ...
... As we discussed earlier capacitors and coils resist the flow of current through them. As has been noted their resistance to current flow is called reactance. When these two reactance’s are combined the combined reactance is referred to as impedance. Notice we said combined rather than added. We will ...
- Pcpolytechnic
... 1. Needs battery for its operation. 2. Internal circuit is complex. 3. It is costlier than the analog multimeter. • Applications: 1. To measure DC voltage 2. To measure the resistance ...
... 1. Needs battery for its operation. 2. Internal circuit is complex. 3. It is costlier than the analog multimeter. • Applications: 1. To measure DC voltage 2. To measure the resistance ...
BDTIC 900V CoolMOS™ C3 High Voltage Power MOSFET Using Charge Compensation Principle
... 900V CoolMOS™ C3 also offers a very low figure-of-merit on-resistance times gate charge (RDS(on)*Qg) of 34W*nC, translating into low conduction, driving and switching losses. The energy stored in the output capacitance is reduced by a factor of two compared to conventional 900V MOSFETs, which reduce ...
... 900V CoolMOS™ C3 also offers a very low figure-of-merit on-resistance times gate charge (RDS(on)*Qg) of 34W*nC, translating into low conduction, driving and switching losses. The energy stored in the output capacitance is reduced by a factor of two compared to conventional 900V MOSFETs, which reduce ...
Resonant inductive coupling
Resonant inductive coupling or electrodynamic induction is the near field wireless transmission of electrical energy between two magnetically coupled coils that are part of resonant circuits tuned to resonate at the same frequency. This process occurs in a resonant transformer, an electrical component which consists of two high Q coils wound on the same core with capacitors connected across the windings to make two coupled LC circuits. Resonant transformers are widely used in radio circuits as bandpass filters, and in switching power supplies. Resonant inductive coupling is also being used in wireless power systems. Here the two LC circuits are in different devices; a transmitter coil in one device transmits electric power across an intervening space to a resonant receiver coil in another device. This technology is being developed for powering and charging portable devices such as cellphones and tablet computers at a distance, without being tethered to an outlet.Resonant transfer works by making a coil ring with an oscillating current. This generates an oscillating magnetic field. Because the coil is highly resonant, any energy placed in the coil dies away relatively slowly over very many cycles; but if a second coil is brought near it, the coil can pick up most of the energy before it is lost, even if it is some distance away. The fields used are predominately non-radiative, near fields (sometimes called evanescent waves), as all hardware is kept well within the 1/4 wavelength distance they radiate little energy from the transmitter to infinity.One of the applications of the resonant transformer is for the CCFL inverter. Another application of the resonant transformer is to couple between stages of a superheterodyne receiver, where the selectivity of the receiver is provided by tuned transformers in the intermediate-frequency amplifiers. The Tesla coil is a resonant transformer circuit used to generate very high voltages, and is able to provide much higher current than high voltage electrostatic machines such as the Van de Graaff generator. Resonant energy transfer is the operating principle behind proposed short range (up to 2 metre) wireless electricity systems such as WiTricity or Rezence and systems that have already been deployed, such as Qi power transfer, passive RFID tags and contactless smart cards.