Engineering Bulletin #43 VFD Application
... Motor Design and Selection: Advances in electronics and motor manufacture have made AC induction motors more reliable than ever, but even the highest quality motor can be irreparably damaged if the VFD is not compatible with the motor. Numerous parameters must be considered in order to properly coup ...
... Motor Design and Selection: Advances in electronics and motor manufacture have made AC induction motors more reliable than ever, but even the highest quality motor can be irreparably damaged if the VFD is not compatible with the motor. Numerous parameters must be considered in order to properly coup ...
LTM2889 - Isolated CAN FD µModule Transceiver and Power
... transceiver. No external components are required – a single supply powers both sides of the interface through an integrated, isolated DC/DC converter. Separate versions are available for 3.3V and 5V power supplies. The dual voltage CAN transceiver and the adjustable regulator allow 3.3V or 5V isolat ...
... transceiver. No external components are required – a single supply powers both sides of the interface through an integrated, isolated DC/DC converter. Separate versions are available for 3.3V and 5V power supplies. The dual voltage CAN transceiver and the adjustable regulator allow 3.3V or 5V isolat ...
COST EFFICIENT SERIES CONNECTION OF SUBMULTILEVEL
... switches in the proposed multilevel inverter; hence, some of the switches are bidirectional (which is considered as one switch) and consist of two IGBTs. The proposed topology can be extended to three-phase systems using three single-phase units. ...
... switches in the proposed multilevel inverter; hence, some of the switches are bidirectional (which is considered as one switch) and consist of two IGBTs. The proposed topology can be extended to three-phase systems using three single-phase units. ...
High-Voltage Energy Storage: The Key to Efficient Holdup
... 9.2 ms when rise and fall times are included). The 5 ms is the time in which a fuse can blow when there is a short circuit on a module or a shortcircuited module is plugged into the system. Many other similar examples can be enumerated, both for DC and AC bus voltages. ...
... 9.2 ms when rise and fall times are included). The 5 ms is the time in which a fuse can blow when there is a short circuit on a module or a shortcircuited module is plugged into the system. Many other similar examples can be enumerated, both for DC and AC bus voltages. ...
QUOTATION High Voltage Testers
... Testers/Detect - Physical contact with electrical conductors is not necessary when testing for or (3~7 kV) live wires. - The 285 HD senses the radiated field that surrounds live conductors. - Radiated field strength increases with voltage and decreases quickly with distance. ...
... Testers/Detect - Physical contact with electrical conductors is not necessary when testing for or (3~7 kV) live wires. - The 285 HD senses the radiated field that surrounds live conductors. - Radiated field strength increases with voltage and decreases quickly with distance. ...
Physics Electromagnetism Practice Test Name
... 5. A negatively charged rod is brought near a metal can that rests on a wood table. You touch the opposite side of the can momentarily with your finger. The can is then a. positively charged. b. negatively charged. c. charged the same as it was. d. uncharged. ...
... 5. A negatively charged rod is brought near a metal can that rests on a wood table. You touch the opposite side of the can momentarily with your finger. The can is then a. positively charged. b. negatively charged. c. charged the same as it was. d. uncharged. ...
Chapter 5 Induction Machines
... Instead, the rotor windings are short-circuited. Magnetic flux flowing across the air gap links these closed rotor circuits. As the rotor moves relative to the air gap flux, Faraday's-law voltages are induced in the shorted rotor wind-ings, causing currents to flow in them. The fact that the rotor c ...
... Instead, the rotor windings are short-circuited. Magnetic flux flowing across the air gap links these closed rotor circuits. As the rotor moves relative to the air gap flux, Faraday's-law voltages are induced in the shorted rotor wind-ings, causing currents to flow in them. The fact that the rotor c ...
Atmel ATA6823C H-bridge Motor Driver Features DATASHEET
... The 5V/3.3V regulator is fully integrated on-chip. It requires only a 2.2µF ceramic capacitor for stability and has 100mA current capability. Using the VMODE pin, the output voltage can be selected to either 5V or 3.3V. Switching of the output voltage during operation is not intended to be supported ...
... The 5V/3.3V regulator is fully integrated on-chip. It requires only a 2.2µF ceramic capacitor for stability and has 100mA current capability. Using the VMODE pin, the output voltage can be selected to either 5V or 3.3V. Switching of the output voltage during operation is not intended to be supported ...
similarities to that of an electromagnetic guitar pickup
... loss is typically 6 dB and this would be quite noticeable. Looking at the upper 3 dB cut off point reveals some very interesting data. In this case the nominal 3 db point is about 800 Hz and the hum buckers (in the two coils connected in series mode) have a 3 dB point of about 400 Hz - which is an o ...
... loss is typically 6 dB and this would be quite noticeable. Looking at the upper 3 dB cut off point reveals some very interesting data. In this case the nominal 3 db point is about 800 Hz and the hum buckers (in the two coils connected in series mode) have a 3 dB point of about 400 Hz - which is an o ...
Novel 9-Steps Automatic Voltage Regulator based on Two Step
... SCRs in industrial field, a thyristors are designed in the implemented 3-ph AC voltage regulator. However, the resultant harmonics in the load current that represents a main challenge due the negative on the design complexity which come from the necessity of harmonics manipulation. On the other side ...
... SCRs in industrial field, a thyristors are designed in the implemented 3-ph AC voltage regulator. However, the resultant harmonics in the load current that represents a main challenge due the negative on the design complexity which come from the necessity of harmonics manipulation. On the other side ...
BD60A00NUX
... 1) Current driver PWM control is controlled by providing PWM signal to PWM, as it is shown Figure 7. The current set up with ISET is chosen as the H section of PWM and the current is off as the L section. Therefore, the average LED current increases in proportion to duty cycle of PWM signal. This me ...
... 1) Current driver PWM control is controlled by providing PWM signal to PWM, as it is shown Figure 7. The current set up with ISET is chosen as the H section of PWM and the current is off as the L section. Therefore, the average LED current increases in proportion to duty cycle of PWM signal. This me ...
Q - BYU Physics and Astronomy
... What is a Capacitor? •We “charge” a capacitor by connecting it to a battery. •When we disconnect the battery, charge remains on the conductors. •If we connect the conductors, charge will then flow from one to the other. ...
... What is a Capacitor? •We “charge” a capacitor by connecting it to a battery. •When we disconnect the battery, charge remains on the conductors. •If we connect the conductors, charge will then flow from one to the other. ...
Wind Transformer Step Up Transformer MQP
... cause the transformer to age prematurely and forces the wind farm operators to replace them more often, causing them to lose money. This feedback loop consists of an AC/DC converter hooked up back to back with a DC/AC inverter that powers the rotor in such a way that the stator electric frequency ma ...
... cause the transformer to age prematurely and forces the wind farm operators to replace them more often, causing them to lose money. This feedback loop consists of an AC/DC converter hooked up back to back with a DC/AC inverter that powers the rotor in such a way that the stator electric frequency ma ...
A Torsional Balance that Resolves Sub-micro
... in which the motion of the arm reaches its steady state without undergoing any oscillation. It turns out that a system strongly damped is most convenient. The reasons behind this are clear: in a weakly damped system, any undesirable mechanical noise upsets the steady state of the balance forcing it ...
... in which the motion of the arm reaches its steady state without undergoing any oscillation. It turns out that a system strongly damped is most convenient. The reasons behind this are clear: in a weakly damped system, any undesirable mechanical noise upsets the steady state of the balance forcing it ...
LTC3404 - 1.4MHz High Efficiency Monolithic Synchronous Step-Down Regulator
... voltage VFB is below 0.6V. This prevents the external clock from interfering with the frequency foldback for shortcircuit protection. Dropout Operation When the input supply voltage decreases toward the output voltage, the duty cycle increases toward the maximum on-time. Further reduction of the sup ...
... voltage VFB is below 0.6V. This prevents the external clock from interfering with the frequency foldback for shortcircuit protection. Dropout Operation When the input supply voltage decreases toward the output voltage, the duty cycle increases toward the maximum on-time. Further reduction of the sup ...
TDA9103
... outputs of the circuit are inhibited if it is too low. In order to have a very good powersupplyrejection, the circuit is internally powered by several internal voltage references (The unique typical value of which is 8V). Two of these voltage references are externally accessible, one for the vertica ...
... outputs of the circuit are inhibited if it is too low. In order to have a very good powersupplyrejection, the circuit is internally powered by several internal voltage references (The unique typical value of which is 8V). Two of these voltage references are externally accessible, one for the vertica ...
BD8963EFJ
... 5. Considerations on Permissible Dissipation and Heat Generation Since this IC functions with high efficiency without significant heat generation in most applications, no special consideration is needed on permissible dissipation or heat generation. In case of extreme conditions, however, including ...
... 5. Considerations on Permissible Dissipation and Heat Generation Since this IC functions with high efficiency without significant heat generation in most applications, no special consideration is needed on permissible dissipation or heat generation. In case of extreme conditions, however, including ...
RC Circuits - University of Utah Physics
... Theoretical charge time = RC Period (T) should be approximately 10*RC so that capacitor can fully charge and discharge. frequency (=1/T) should be approximately 1/(10*RC) ...
... Theoretical charge time = RC Period (T) should be approximately 10*RC so that capacitor can fully charge and discharge. frequency (=1/T) should be approximately 1/(10*RC) ...
MAX8664 Low-Cost, Dual-Output, Step-Down Controller with Fast Transient Response General Description
... less than ±0.8% over load, line, and temperature. The MAX8664 operates with a constant switching frequency adjustable from 100kHz to 1MHz. Built-in boost diodes reduce external component count. Digital softstart eliminates input inrush current during startup. The second output has an optional REFIN2 ...
... less than ±0.8% over load, line, and temperature. The MAX8664 operates with a constant switching frequency adjustable from 100kHz to 1MHz. Built-in boost diodes reduce external component count. Digital softstart eliminates input inrush current during startup. The second output has an optional REFIN2 ...
Spark-gap transmitter
A spark-gap transmitter is a device that generates radio frequency electromagnetic waves using a spark gap.Spark gap transmitters were the first devices to demonstrate practical radio transmission, and were the standard technology for the first three decades of radio (1887–1916). Later, more efficient transmitters were developed based on rotary machines like the high-speed Alexanderson alternators and the static Poulsen Arc generators.Most operators, however, still preferred spark transmitters because of their uncomplicated design and because the carrier stopped when the telegraph key was released, which let the operator ""listen through"" for a reply. With other types of transmitter, the carrier could not be controlled so easily, and they required elaborate measures to modulate the carrier and to prevent transmitter leakage from de-sensitizing the receiver. After WWI, greatly improved transmitters based on vacuum tubes became available, which overcame these problems, and by the late 1920s the only spark transmitters still in regular operation were ""legacy"" installations on naval vessels. Even when vacuum tube based transmitters had been installed, many vessels retained their crude but reliable spark transmitters as an emergency backup. However, by 1940, the technology was no longer used for communication. Use of the spark-gap transmitter led to many radio operators being nicknamed ""Sparks"" long after they ceased using spark transmitters. Even today, the German verb funken, literally, ""to spark,"" also means ""to send a radio message or signal.""