TPS650240 数据资料 dataSheet 下载
... voltage, peripheral, I/O and memory rails in a processor based system. All three step-down converters enter a low power mode at light load for maximum efficiency across the widest possible range of load currents. The converters can be forced into fixed frequency PWM mode by pulling the MODE pin high ...
... voltage, peripheral, I/O and memory rails in a processor based system. All three step-down converters enter a low power mode at light load for maximum efficiency across the widest possible range of load currents. The converters can be forced into fixed frequency PWM mode by pulling the MODE pin high ...
Experiment 7 - Rensselaer Polytechnic Institute
... from performing optimally under all conditions. The one you are most likely to encounter in this class is called saturation. An op amp becomes saturated if it tries to put out a voltage level beyond the range of the power source voltages, ± VCC, For example, if the gain tries to drive the output abo ...
... from performing optimally under all conditions. The one you are most likely to encounter in this class is called saturation. An op amp becomes saturated if it tries to put out a voltage level beyond the range of the power source voltages, ± VCC, For example, if the gain tries to drive the output abo ...
What Is Ripple - Controlled Power Company
... regulation. All of these systems will deliver about 4.2 to 5% ripple only when operating at full rated voltage and current levels. The variable and regulated rectifiers are most typically controlled by SCR’s (Silicon Controlled Rectifiers) devices. When these SCR devices are used to lower the output ...
... regulation. All of these systems will deliver about 4.2 to 5% ripple only when operating at full rated voltage and current levels. The variable and regulated rectifiers are most typically controlled by SCR’s (Silicon Controlled Rectifiers) devices. When these SCR devices are used to lower the output ...
Behavior of three-phase induction motors with variable
... As the full pole pitch is 180° and for motor M120 the coil pitch is reduced by 60° 共1 / 3 pitch兲, the third voltage harmonic should be reduced compared to other motors with different coil pitches under both sinusoidal and PWM voltage supplies at half load 共375 W兲, full load 共746 W兲, and overload 共88 ...
... As the full pole pitch is 180° and for motor M120 the coil pitch is reduced by 60° 共1 / 3 pitch兲, the third voltage harmonic should be reduced compared to other motors with different coil pitches under both sinusoidal and PWM voltage supplies at half load 共375 W兲, full load 共746 W兲, and overload 共88 ...
Contents - Siemens
... Power station locations follow the availability of primary energy sources, cooling systems and other environmental conditions, and are therefore often located away from the power consumption centres. The power transmission and distribution systems not only interconnect power stations and consumers, ...
... Power station locations follow the availability of primary energy sources, cooling systems and other environmental conditions, and are therefore often located away from the power consumption centres. The power transmission and distribution systems not only interconnect power stations and consumers, ...
NCL30081LEDGEVB 3.6 W Flyback 3 LED Step Dimmable Driver Evaluation Board User's Manual
... resistor will also have some effect on the output current. Since the input power is < 5 W maximum, this falls below the level where power factor or harmonic current requirements are applicable in many countries (e.g. US). In the EU, the harmonic current requirements for IEC61000-3-2 Class C are appl ...
... resistor will also have some effect on the output current. Since the input power is < 5 W maximum, this falls below the level where power factor or harmonic current requirements are applicable in many countries (e.g. US). In the EU, the harmonic current requirements for IEC61000-3-2 Class C are appl ...
X9319 - Intersil
... memory and then be recalled upon a subsequent power-up operation. The device can be used as a three-terminal potentiometer for voltage control or as a two-terminal variable resistor for current control in a wide variety of applications. ...
... memory and then be recalled upon a subsequent power-up operation. The device can be used as a three-terminal potentiometer for voltage control or as a two-terminal variable resistor for current control in a wide variety of applications. ...
Designing of a variable frequency standalone impedance analyzer
... Current mirror is used to maintain equal current flow in two different branches regardless of loading. This type of current source is more advantageous because of its high input impedance. For generation of constant current we need a current generator, current mirror and a current regulator. This ty ...
... Current mirror is used to maintain equal current flow in two different branches regardless of loading. This type of current source is more advantageous because of its high input impedance. For generation of constant current we need a current generator, current mirror and a current regulator. This ty ...
Study Material Circuit Theory 3rd Semester Electronics & Telecom Engineering
... An electric circuit is an interconnection of electrical elements such as resistors, capacitors, inductors, voltage source etc. In electrical engineering, transfer of energy takes place from one point to another, which requires interconnection of electrical devices. Such interconnection is known as e ...
... An electric circuit is an interconnection of electrical elements such as resistors, capacitors, inductors, voltage source etc. In electrical engineering, transfer of energy takes place from one point to another, which requires interconnection of electrical devices. Such interconnection is known as e ...
frequency controlled ac motor drive - Allen
... 5th and 7th harmonics in particular. The same also applies to the motor torque pulsation at six times the input frequency. A smooth speed is thus achieved at lower frequencies. Concerning additional heating resulting from nonsinusoidal voltages and currents, there is no significant difference betwee ...
... 5th and 7th harmonics in particular. The same also applies to the motor torque pulsation at six times the input frequency. A smooth speed is thus achieved at lower frequencies. Concerning additional heating resulting from nonsinusoidal voltages and currents, there is no significant difference betwee ...
experiment - Portal UniMAP
... Figure 5.3 shows the simple induction motor of Figure 5.1 with the addition of a second electromagnet placed at right angle to the first electromagnet. The second electromagnet is identical to the first one and is connected to the same ac power source. The currents I1 and I2 in the electromagnets (w ...
... Figure 5.3 shows the simple induction motor of Figure 5.1 with the addition of a second electromagnet placed at right angle to the first electromagnet. The second electromagnet is identical to the first one and is connected to the same ac power source. The currents I1 and I2 in the electromagnets (w ...
Features Mechanical Data
... Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any c ...
... Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any c ...
Lab Manual Module 1
... experience no pain or suffering. You will be recording from brain circuits that are common to all mammals, including humans, so we hope to impress upon you in the course of the laboratory the relevance of these experimental approaches in understanding both normal neural function as well as the under ...
... experience no pain or suffering. You will be recording from brain circuits that are common to all mammals, including humans, so we hope to impress upon you in the course of the laboratory the relevance of these experimental approaches in understanding both normal neural function as well as the under ...
Study of Quasi-Z-Source Cascaded H-Bridge Multilevel Inverter with
... structure. The quasi-Z-Source Inverter (qZSI)7 portrays the advantages of lower number of power devices with lower power rating. Also, in recent days multilevel inverters are popularly utilized for high-power applications with good quality output and low voltage stress12. CHB multilevel inverter has ...
... structure. The quasi-Z-Source Inverter (qZSI)7 portrays the advantages of lower number of power devices with lower power rating. Also, in recent days multilevel inverters are popularly utilized for high-power applications with good quality output and low voltage stress12. CHB multilevel inverter has ...
Fulltext
... In the above description only dynamic range given by thermal noise and speed is considered. We showed initially that the dynamic range requirement leads to a requirement on the minimum load capacitance. We then showed how this capacitance, in combination with a speed requirement leads to a lower bou ...
... In the above description only dynamic range given by thermal noise and speed is considered. We showed initially that the dynamic range requirement leads to a requirement on the minimum load capacitance. We then showed how this capacitance, in combination with a speed requirement leads to a lower bou ...
TIMERS
... Q1 turns on, its output will be a logic 0. This will be applied to Q2's input resistor, keeping Q2 turned off so that its output will be a logic 1. This logic 1 will be applied back to Q1's input resistor, keeping Q1 turned on and holding the entire circuit locked into this stable state. On the othe ...
... Q1 turns on, its output will be a logic 0. This will be applied to Q2's input resistor, keeping Q2 turned off so that its output will be a logic 1. This logic 1 will be applied back to Q1's input resistor, keeping Q1 turned on and holding the entire circuit locked into this stable state. On the othe ...
Technical Glossary
... cranking current rating is used for sizing batteries, cables, and battery switches. current see amperage Current is a flow of electrical charge carriers, usually electrons or electron-deficient atoms. The common symbol for current is the uppercase letter I. The standard unit is the ampere, symbolize ...
... cranking current rating is used for sizing batteries, cables, and battery switches. current see amperage Current is a flow of electrical charge carriers, usually electrons or electron-deficient atoms. The common symbol for current is the uppercase letter I. The standard unit is the ampere, symbolize ...
Resistive opto-isolator
Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator or lamp-coupled photocell, is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically isolated from each other. The light source is usually a light-emitting diode (LED), a miniature incandescent lamp, or sometimes a neon lamp, whereas the detector is a semiconductor-based photoresistor made of cadmium selenide (CdSe) or cadmium sulfide (CdS). The source and detector are coupled through a transparent glue or through the air.Electrically, RO is a resistance controlled by the current flowing through the light source. In the dark state, the resistance typically exceeds a few MOhm; when illuminated, it decreases as the inverse of the light intensity. In contrast to the photodiode and phototransistor, the photoresistor can operate in both the AC and DC circuits and have a voltage of several hundred volts across it. The harmonic distortions of the output current by the RO are typically within 0.1% at voltages below 0.5 V.RO is the first and the slowest opto-isolator: its switching time exceeds 1 ms, and for the lamp-based models can reach hundreds of milliseconds. Parasitic capacitance limits the frequency range of the photoresistor by ultrasonic frequencies. Cadmium-based photoresistors exhibit a ""memory effect"": their resistance depends on the illumination history; it also drifts during the illumination and stabilizes within hours, or even weeks for high-sensitivity models. Heating induces irreversible degradation of ROs, whereas cooling to below −25 °C dramatically increases the response time. Therefore, ROs were mostly replaced in the 1970s by the faster and more stable photodiodes and photoresistors. ROs are still used in some sound equipment, guitar amplifiers and analog synthesizers owing to their good electrical isolation, low signal distortion and ease of circuit design.