Today’s Topics - Department of Electrical Engineering
... The voltage in a distribution line is not constant. It may be 1.05 p.u. at generator terminal and 0.95 at the load side. Depending on the place the transformer is used, we may need to adjust the transformer ratio to get similar load voltage. That’s why we need Tap ...
... The voltage in a distribution line is not constant. It may be 1.05 p.u. at generator terminal and 0.95 at the load side. Depending on the place the transformer is used, we may need to adjust the transformer ratio to get similar load voltage. That’s why we need Tap ...
ElectronicsPrimer
... • HB uses two copies of H-bridge driver, either SGS-Thomson L293D or TI SN754410 - chips accept digital logic signals as input and drive motors directly on their outputs • Each triangular driver replaces one “leg,” or two transistors, in the H-bridge circuits. Each driver may be either driven high ( ...
... • HB uses two copies of H-bridge driver, either SGS-Thomson L293D or TI SN754410 - chips accept digital logic signals as input and drive motors directly on their outputs • Each triangular driver replaces one “leg,” or two transistors, in the H-bridge circuits. Each driver may be either driven high ( ...
STEVAL-IHT005V1
... Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or other ...
... Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or other ...
answers
... Excessive power dissipation in a BJT will lead to the device heating up to a point where the temperature of the device exceeds the maximum rated operating temperature. In this case the device may fail or at least the operating lifetime of the device may be shortened. To reduce the heating, the devic ...
... Excessive power dissipation in a BJT will lead to the device heating up to a point where the temperature of the device exceeds the maximum rated operating temperature. In this case the device may fail or at least the operating lifetime of the device may be shortened. To reduce the heating, the devic ...
Pulse energy calculation considerations
... Most power resistor applications are 'pulse' applications, meaning that the power dissipated in the resistor is created by a series of pulses rather than a constant power dissipation. These applications have to be looked at in some detail as although the average power may be well within the rating o ...
... Most power resistor applications are 'pulse' applications, meaning that the power dissipated in the resistor is created by a series of pulses rather than a constant power dissipation. These applications have to be looked at in some detail as although the average power may be well within the rating o ...
Design and Implementation of Class B Power Amplifier for 5kW
... modulated inverters was generalized [1][2]. The harmonic generator with pulse width modulated inverter has problem that switching losses increase with the elevation of the switching frequency [3][4]. And although its efficiency is poor and a large heat sink and an isolation transformer are required ...
... modulated inverters was generalized [1][2]. The harmonic generator with pulse width modulated inverter has problem that switching losses increase with the elevation of the switching frequency [3][4]. And although its efficiency is poor and a large heat sink and an isolation transformer are required ...
What 3 ways can things become charged?
... electrons What causes electrons to flow? When an electric force is applied, it causes a potential difference or difference in voltage between the ends of a conductor. When there is no potential difference, the flow of charge stops. ...
... electrons What causes electrons to flow? When an electric force is applied, it causes a potential difference or difference in voltage between the ends of a conductor. When there is no potential difference, the flow of charge stops. ...
SITOP Power Supply
... But even this theoretically possible high output current is not the perfect solution for the problem – since in practice, ohmic resistances of the feed and return wires to and from the fault location often prevent this maximum current from flowing. Already at a loop impedance of only 0.4 Ohm (for a ...
... But even this theoretically possible high output current is not the perfect solution for the problem – since in practice, ohmic resistances of the feed and return wires to and from the fault location often prevent this maximum current from flowing. Already at a loop impedance of only 0.4 Ohm (for a ...
Switch gear and Protection 10EE62 Reliability Tests The newly
... e) Dust and chemical fumes, Overloads and over voltages Unit Testing The modern FEW circuit breakers contains two or more similar interrupters per pole. These interrupters operate simultaneously and share the voltage across the pole equally. The breaking capacity is also equally shared. The results ...
... e) Dust and chemical fumes, Overloads and over voltages Unit Testing The modern FEW circuit breakers contains two or more similar interrupters per pole. These interrupters operate simultaneously and share the voltage across the pole equally. The breaking capacity is also equally shared. The results ...
Lesson 26
... The voltage drops across these two circuit components are shown in Fig. 3.44, where vector OA indicates VR and AB indicates VL. The applied voltage V is the vector sum of the two, i.e., OB. V= ...
... The voltage drops across these two circuit components are shown in Fig. 3.44, where vector OA indicates VR and AB indicates VL. The applied voltage V is the vector sum of the two, i.e., OB. V= ...
VERS-1 Erin Browning Matthew Mohn Michael Senejoa Motivation
... Before the mixed signal is sent to the user's amplifier, it will be sent into a digital signal processor which to add some effects to the basic sound of the synthesizer. The general list of effects to be performed by the DSP are delay, reverb, chorus, phaser, and others if time allows. The delay eff ...
... Before the mixed signal is sent to the user's amplifier, it will be sent into a digital signal processor which to add some effects to the basic sound of the synthesizer. The general list of effects to be performed by the DSP are delay, reverb, chorus, phaser, and others if time allows. The delay eff ...
VERS-1 Erin Browning Matthew Mohn Michael Senejoa Motivation
... Before the mixed signal is sent to the user's amplifier, it will be sent into a digital signal processor which to add some effects to the basic sound of the synthesizer. The general list of effects to be performed by the DSP are delay, reverb, chorus, phaser, and others if time allows. The delay eff ...
... Before the mixed signal is sent to the user's amplifier, it will be sent into a digital signal processor which to add some effects to the basic sound of the synthesizer. The general list of effects to be performed by the DSP are delay, reverb, chorus, phaser, and others if time allows. The delay eff ...
PCB Layout Tips
... Mixed voltage designs – interfacing components • To interface a 5V output to a 3.3V input on a slow signal, use a simple voltage divider. Note, however, that these added resistors will slow the rise time of the signal. • For a faster signal, run the signal through a buffer in the VHC logic family. ...
... Mixed voltage designs – interfacing components • To interface a 5V output to a 3.3V input on a slow signal, use a simple voltage divider. Note, however, that these added resistors will slow the rise time of the signal. • For a faster signal, run the signal through a buffer in the VHC logic family. ...
Design Idea
... rises until it reaches a constant value IP. The start of this current limiting area is defined by the limiting voltage VL, above which IL = 80% of IP is reached. IP remains constant, unless a maximum admissible voltage VAK is reached, above which a breakdown happens and the device can be destroyed. ...
... rises until it reaches a constant value IP. The start of this current limiting area is defined by the limiting voltage VL, above which IL = 80% of IP is reached. IP remains constant, unless a maximum admissible voltage VAK is reached, above which a breakdown happens and the device can be destroyed. ...
Basic Architecture of Electronics Instrumentation Measurement System
... operate, called an excitation signal which is used by the sensor to produce the output signal. Active sensors are self-generating devices because their own properties change in response to an external effect producing for example, an output voltage of 1 to 10V DC or an output current such as 4 to 20 ...
... operate, called an excitation signal which is used by the sensor to produce the output signal. Active sensors are self-generating devices because their own properties change in response to an external effect producing for example, an output voltage of 1 to 10V DC or an output current such as 4 to 20 ...
MODEL 2681 Voltage Band Monitor
... coated liberally with a good quality silicone grease, such as Dow Corning DC-4 or DC-4X. Insert the unit into the socket and wipe off excess grease around the base. This will prevent the entrance of moisture and other contaminates into the base and socket areas. ...
... coated liberally with a good quality silicone grease, such as Dow Corning DC-4 or DC-4X. Insert the unit into the socket and wipe off excess grease around the base. This will prevent the entrance of moisture and other contaminates into the base and socket areas. ...
DM74LS38 Quad 2-Input NAND Buffer with Open
... DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support de ...
... DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support de ...
Power electronics
Power electronics is the application of solid-state electronics to the control and conversion of electric power. It also refers to a subject of research in electronic and electrical engineering which deals with the design, control, computation and integration of nonlinear, time-varying energy-processing electronic systems with fast dynamics.The first high power electronic devices were mercury-arc valves. In modern systems the conversion is performed with semiconductor switching devices such as diodes, thyristors and transistors, pioneered by R. D. Middlebrook and others beginning in the 1950s. In contrast to electronic systems concerned with transmission and processing of signals and data, in power electronics substantial amounts of electrical energy are processed. An AC/DC converter (rectifier) is the most typical power electronics device found in many consumer electronic devices, e.g. television sets, personal computers, battery chargers, etc. The power range is typically from tens of watts to several hundred watts. In industry a common application is the variable speed drive (VSD) that is used to control an induction motor. The power range of VSDs start from a few hundred watts and end at tens of megawatts.The power conversion systems can be classified according to the type of the input and output power AC to DC (rectifier) DC to AC (inverter) DC to DC (DC-to-DC converter) AC to AC (AC-to-AC converter)