Model Question Paper BASIC ELECTRICAL ENGINEERING
... shunt field resistance of 200 Ω respectively. The armature has 120 coils each of 3 turn each. The flux per pole is 0.03Wb. If the load resistance is 10 Ω, determine the terminal voltage. MODULE 3 ...
... shunt field resistance of 200 Ω respectively. The armature has 120 coils each of 3 turn each. The flux per pole is 0.03Wb. If the load resistance is 10 Ω, determine the terminal voltage. MODULE 3 ...
ECEN5817L38
... current-bidirectional switch See Vinciarelli patent (1982) for use in forward converter Related to other half-bridge ZVS circuits Can be added to the transistor in any PWM converter Not only adds ZVS to forward converter, but also resets transformer better, leading to better transistor utilization t ...
... current-bidirectional switch See Vinciarelli patent (1982) for use in forward converter Related to other half-bridge ZVS circuits Can be added to the transistor in any PWM converter Not only adds ZVS to forward converter, but also resets transformer better, leading to better transistor utilization t ...
MC34151, MC33151 High Speed Dual MOSFET Drivers
... specifically designed for applications that require low current digital circuitry to drive large capacitive loads with high slew rates. These devices feature low input current making them CMOS and LSTTL logic compatible, input hysteresis for fast output switching that is independent of input transit ...
... specifically designed for applications that require low current digital circuitry to drive large capacitive loads with high slew rates. These devices feature low input current making them CMOS and LSTTL logic compatible, input hysteresis for fast output switching that is independent of input transit ...
Breaking the Myth of the Audiopile - Encompass
... three active elements make up a triode. Due to sizing and spacing of the two triodes in the 12AU7 tube the voltage gain is optimized and can handle a desirable amount of power. By varying the voltage across the grid of both triodes in tube the preamp can increase the voltage of the input signal. Thi ...
... three active elements make up a triode. Due to sizing and spacing of the two triodes in the 12AU7 tube the voltage gain is optimized and can handle a desirable amount of power. By varying the voltage across the grid of both triodes in tube the preamp can increase the voltage of the input signal. Thi ...
PDF
... Fig. 4 Waveforms for the proposed converter . Primary windings of the coupled inductors are employed to decrease the input current ripple, and that of secondary windings are used for extend voltage gain. The turn’s ratios of the coupled inductors are the same .In the circuit Lm1 and Lm2 are the magn ...
... Fig. 4 Waveforms for the proposed converter . Primary windings of the coupled inductors are employed to decrease the input current ripple, and that of secondary windings are used for extend voltage gain. The turn’s ratios of the coupled inductors are the same .In the circuit Lm1 and Lm2 are the magn ...
How to select the Triac, ACS, or ACST that fits your application
... drum motor control (mainly in vertical axis washing machines), rolling shutters, garagedoor openers, compressors, etc. The Triac voltage typically reaches 550-650 V at device turn-off for 230-240 V applications (see STMicroelectronics Application note AN2991). ...
... drum motor control (mainly in vertical axis washing machines), rolling shutters, garagedoor openers, compressors, etc. The Triac voltage typically reaches 550-650 V at device turn-off for 230-240 V applications (see STMicroelectronics Application note AN2991). ...
Model 6450 Series Operating Instructions
... B. The BACK key moves the current menu location up one level higher than it was before. It is also used to get back to the normal operating display. C. The Arrow Down key allows the user to step down through the program menu or to decrease a setting. D. The Arrow Up key allows the user to step up th ...
... B. The BACK key moves the current menu location up one level higher than it was before. It is also used to get back to the normal operating display. C. The Arrow Down key allows the user to step down through the program menu or to decrease a setting. D. The Arrow Up key allows the user to step up th ...
Adjustable Front End Overvoltage Protection Controller with
... The NCP392A is an overvoltage front end protection and be able to disconnect the systems from its output pin in case wrong input operating conditions are detected, up to +28 V. Due to this device using internal NMOS, no external device is necessary, reducing the system cost and the PCB area of the a ...
... The NCP392A is an overvoltage front end protection and be able to disconnect the systems from its output pin in case wrong input operating conditions are detected, up to +28 V. Due to this device using internal NMOS, no external device is necessary, reducing the system cost and the PCB area of the a ...
Sep 2005 Complete 2-Cell-AA/USB Power Manager in a 4mm
... routing the pin driving that trace next to a line with strong AC signals. The noise immunity of the DIV pin can be easily improved by adding a capacitor to ground, or a series resistor of up to 100kΩ placed near the DIV pin. In normal operation, the DIV pin uses a small current of about 1µA to pull ...
... routing the pin driving that trace next to a line with strong AC signals. The noise immunity of the DIV pin can be easily improved by adding a capacitor to ground, or a series resistor of up to 100kΩ placed near the DIV pin. In normal operation, the DIV pin uses a small current of about 1µA to pull ...
IMPLEMENTATION OF NEW H- BRIDGE MULTILEVEL INVERTER
... polarity for the output. Thus the multilevel output voltage is generated with the reduced number of switches by using the proposed topology. The proposed topology for seven level inverter is shown in Fig.1. It requires ten IGBT switches, ten diodes and three equal dc sources. Low frequency part tran ...
... polarity for the output. Thus the multilevel output voltage is generated with the reduced number of switches by using the proposed topology. The proposed topology for seven level inverter is shown in Fig.1. It requires ten IGBT switches, ten diodes and three equal dc sources. Low frequency part tran ...
Electrical Machine-I EE-241
... In A.C generator (alternator), the stationary armature is called stator, the rotating field is called rotor. The advantages are: It is easy to insulate the stationary armature windings for very high voltages. It is easy to collect the high voltage from a fixed terminal. Stator is outside of th ...
... In A.C generator (alternator), the stationary armature is called stator, the rotating field is called rotor. The advantages are: It is easy to insulate the stationary armature windings for very high voltages. It is easy to collect the high voltage from a fixed terminal. Stator is outside of th ...
Understanding the Fundamental Principles of Vector
... A perfectly matched condition must exist at a connection between two devices for maximum power transfer into a load, given a source resistance of RS and a load resistance of RL. This condition occurs when RL = RS, and is true whether the stimulus is a DC voltage source or a source of RF sine waves ( ...
... A perfectly matched condition must exist at a connection between two devices for maximum power transfer into a load, given a source resistance of RS and a load resistance of RL. This condition occurs when RL = RS, and is true whether the stimulus is a DC voltage source or a source of RF sine waves ( ...
Advance electroncis Assignment Question
... Explain the working of RC coupled amplifier with neat diagram. Also obtain its frequency response. List the methods to analyze the multi stage amplifier with voltage series feedback. Explain it with necessary equations. Draw and explain the two cascaded CE transistor stage. Explain the significance ...
... Explain the working of RC coupled amplifier with neat diagram. Also obtain its frequency response. List the methods to analyze the multi stage amplifier with voltage series feedback. Explain it with necessary equations. Draw and explain the two cascaded CE transistor stage. Explain the significance ...
Schinkel - TAMU E.C.E. DEPT.
... University of Twente, Enschede, The Netherlands Latch-type sense amplifiers, or sense amplifier based flip-flops, Figure 17.7.4 shows the measured relative delay under different are very effective comparators. They achieve fast decisions due to conditions (the absolute delay is not measurable due to ...
... University of Twente, Enschede, The Netherlands Latch-type sense amplifiers, or sense amplifier based flip-flops, Figure 17.7.4 shows the measured relative delay under different are very effective comparators. They achieve fast decisions due to conditions (the absolute delay is not measurable due to ...
Non-RF Applications for the Surface Mount Schottky Diode Pairs
... allowed voltages (JEDEC) of the input gate. Usually “built-in” Schottky diodes are used to limit the input signal to Vcc + 0.5 V and -0.5 V because of its low turn-on voltage. Quite often the “built-in” ESD protection diodes are too slow and connected via a resistor to the input pin of the integrate ...
... allowed voltages (JEDEC) of the input gate. Usually “built-in” Schottky diodes are used to limit the input signal to Vcc + 0.5 V and -0.5 V because of its low turn-on voltage. Quite often the “built-in” ESD protection diodes are too slow and connected via a resistor to the input pin of the integrate ...
Voltage definitions for phase control and bi
... the junction temperature may indeed reach 125 °C but the case temperature never exceeds, say, 110 °C, allowing leakage current losses to be cooled away across the temperature gradient between junction and case. Since thermal runaway initiates only at or above a certain starting temperature, ABB trad ...
... the junction temperature may indeed reach 125 °C but the case temperature never exceeds, say, 110 °C, allowing leakage current losses to be cooled away across the temperature gradient between junction and case. Since thermal runaway initiates only at or above a certain starting temperature, ABB trad ...
1.1A, Single-Input 5-V Power Supply IC for
... enable a wireless charging solution within a small area and low component count. These include a 3.3-V LDO which drives an MSP430BQ1010 wireless controller, high-accuracy current sense for calculating receiver-side power usage, 100mA/400mA current limits enable robust communication at all load curre ...
... enable a wireless charging solution within a small area and low component count. These include a 3.3-V LDO which drives an MSP430BQ1010 wireless controller, high-accuracy current sense for calculating receiver-side power usage, 100mA/400mA current limits enable robust communication at all load curre ...
AD557: 英文产品数据手册下载
... All precision converter products require careful application of good grounding practices to maintain full rated performance. Because the AD557 is intended for application in microcomputer systems where digital noise is prevalent, special care must be taken to assure that its inherent precision is re ...
... All precision converter products require careful application of good grounding practices to maintain full rated performance. Because the AD557 is intended for application in microcomputer systems where digital noise is prevalent, special care must be taken to assure that its inherent precision is re ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,
... that comply with harmonic regulations such as the IEC 61000-3-2 [3]–[6]. SS converters integrate a buck PFC cell followed by a DC-DC cell, and use a bulk capacitor between them to attain fast output voltage regulation. The SS converter can operate either in continuous conduction mode (CCM) or discon ...
... that comply with harmonic regulations such as the IEC 61000-3-2 [3]–[6]. SS converters integrate a buck PFC cell followed by a DC-DC cell, and use a bulk capacitor between them to attain fast output voltage regulation. The SS converter can operate either in continuous conduction mode (CCM) or discon ...
July 2010
... Find the current flowing through the RL = 1 k Ω resistor for the circuit shown in Figure 1. What is the power delivered or absorbed by the independent current source? ...
... Find the current flowing through the RL = 1 k Ω resistor for the circuit shown in Figure 1. What is the power delivered or absorbed by the independent current source? ...
20-electrical
... As noted on handout (units given below are full size units taken from the 16 scale) – Size of outlet symbol = 1/8” diameter circle – Size of light fixture symbol = 1/4” diameter circle – Size of fluorescent symbol = 1/8” x 1” (6”x48” real size) – Size of switch symbol = 1/8” lettering – Size of push ...
... As noted on handout (units given below are full size units taken from the 16 scale) – Size of outlet symbol = 1/8” diameter circle – Size of light fixture symbol = 1/4” diameter circle – Size of fluorescent symbol = 1/8” x 1” (6”x48” real size) – Size of switch symbol = 1/8” lettering – Size of push ...
Separately Excited DC Generators
... a linear speed-to-voltage converter with higher speed producing greater output voltage? 11. Use the two end points to calculate the slope of the relationship obtained in Graph 1 (Results Section). The values of these points are indicated in data table (Table 1-Results Section). In the Data table win ...
... a linear speed-to-voltage converter with higher speed producing greater output voltage? 11. Use the two end points to calculate the slope of the relationship obtained in Graph 1 (Results Section). The values of these points are indicated in data table (Table 1-Results Section). In the Data table win ...
Pulse-width modulation
Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being MPPT.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.