Single Phase Dual Full Bridge Bi-directional DC
... operation of full bridge dc-dc converter. The proposed topology has two single phase full bridge converters on either side of the isolation transformer considering EDLC as energy storage device. Typical applications of this scheme are auxiliary power supply in fuel cell vehicles and battery charging ...
... operation of full bridge dc-dc converter. The proposed topology has two single phase full bridge converters on either side of the isolation transformer considering EDLC as energy storage device. Typical applications of this scheme are auxiliary power supply in fuel cell vehicles and battery charging ...
Development of a Solid-State Doppler Marine Radar
... overlooking the beach. Results from Bell’s study revealed that the shoaling and refracting of the waves prevented the wavenumber spectra from producing a full variation in the wave parameters. This showed that the scattering which occurs in the nearshore zone is more complex than that in the open s ...
... overlooking the beach. Results from Bell’s study revealed that the shoaling and refracting of the waves prevented the wavenumber spectra from producing a full variation in the wave parameters. This showed that the scattering which occurs in the nearshore zone is more complex than that in the open s ...
electrical engineering practice lab manual
... Safety Precautions 1. SAFETY is of paramount importance in the Electrical Engineering Laboratories. 2. Electricity NEVER EXCUSES careless persons. So, exercise enough care and attention in handling electrical equipment and follow safety practices in the laboratory. (Electricity is a good servant bu ...
... Safety Precautions 1. SAFETY is of paramount importance in the Electrical Engineering Laboratories. 2. Electricity NEVER EXCUSES careless persons. So, exercise enough care and attention in handling electrical equipment and follow safety practices in the laboratory. (Electricity is a good servant bu ...
Drive and Motor Basics - Allen
... pulse width modulated “PWM” technique. With this method, a DC voltage is applied to the motor windings in time controlled pulses in order to achieve current that approximates a sine wave of the desired frequency. IGBTs or Isolated Gate Bipolar Transistors are the latest technology and offer the abi ...
... pulse width modulated “PWM” technique. With this method, a DC voltage is applied to the motor windings in time controlled pulses in order to achieve current that approximates a sine wave of the desired frequency. IGBTs or Isolated Gate Bipolar Transistors are the latest technology and offer the abi ...
tricolor light emitting diode dot matrix display
... a cassette tape player or CD player by frequency modulation (FM). The receiver makes use of a photo-detector to detect high frequency variations in the light flux. This detected signal is passed to appropriate amplifying and detecting stages to reproduce audio signal transmitted. Both the transmitte ...
... a cassette tape player or CD player by frequency modulation (FM). The receiver makes use of a photo-detector to detect high frequency variations in the light flux. This detected signal is passed to appropriate amplifying and detecting stages to reproduce audio signal transmitted. Both the transmitte ...
LM1575/LM2575/LM2575HV SIMPLE SWITCHER® 1A Step
... Outgoing Quality Level, and all are 100% production tested. Note 3: All limits guaranteed at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits are 100% production tested. All limits at temperature extremes are guaranteed via correlation u ...
... Outgoing Quality Level, and all are 100% production tested. Note 3: All limits guaranteed at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits are 100% production tested. All limits at temperature extremes are guaranteed via correlation u ...
MAX4645/6 DS
... all CMOS devices. Do not exceed the absolute maximum ratings because stresses beyond the listed ratings can cause permanent damage to the devices. Always sequence V+ on first, followed by the logic inputs, NO, or COM. If power-supply sequencing is not possible, add two small signal diodes (D1, D2) i ...
... all CMOS devices. Do not exceed the absolute maximum ratings because stresses beyond the listed ratings can cause permanent damage to the devices. Always sequence V+ on first, followed by the logic inputs, NO, or COM. If power-supply sequencing is not possible, add two small signal diodes (D1, D2) i ...
Merlin 350KW-400KW Large Portable Load Bank
... contacts 7–4 complete the circuit to the Master Load switch. An exhaust temperature above 295° F or a substantial reduction in air flow pressure will result in the Load Bank entering a failure state. The “Cooling Failure” lamp is illuminated and the load is de-energized. Until the failure is investi ...
... contacts 7–4 complete the circuit to the Master Load switch. An exhaust temperature above 295° F or a substantial reduction in air flow pressure will result in the Load Bank entering a failure state. The “Cooling Failure” lamp is illuminated and the load is de-energized. Until the failure is investi ...
Topic: High Performance Data Acquisition Systems Analog
... many different key aspects of various types of data acquisition systems and how to design and develop them to achieve the overall desired result. The most elementary system architecture configuration would be to simply connect the sensor output directly to the analog to digital convertor input and t ...
... many different key aspects of various types of data acquisition systems and how to design and develop them to achieve the overall desired result. The most elementary system architecture configuration would be to simply connect the sensor output directly to the analog to digital convertor input and t ...
Wideband, Low-Noise, Voltage-Feedback OPERATIONAL AMPLIFIER APPLICATIONS FEATURES
... Figure 1 shows the noninverting gain of a 10V/V circuit used as the basis of the Electrical Characteristics and most of the Typical Characteristic curves. Most of the curves are characterized using signal sources with a 50Ω driving impedance, and with a 50Ω load impedance presented by the measuremen ...
... Figure 1 shows the noninverting gain of a 10V/V circuit used as the basis of the Electrical Characteristics and most of the Typical Characteristic curves. Most of the curves are characterized using signal sources with a 50Ω driving impedance, and with a 50Ω load impedance presented by the measuremen ...
1.8A - Synqor
... transformer’s output is accomplished with synchronous rectifiers. These devices, which are MOSFETs with a very low on-state resistance, dissipate far less energy than Schottky diodes. This is the primary reason that the converter has such high efficiency, even at very low output voltages and very hi ...
... transformer’s output is accomplished with synchronous rectifiers. These devices, which are MOSFETs with a very low on-state resistance, dissipate far less energy than Schottky diodes. This is the primary reason that the converter has such high efficiency, even at very low output voltages and very hi ...
Power Gain Stages for Monolithic Amplifiers
... Most monolithic amplifiers cannot supply more than a few hundred milliwatts of output power. Standard IC processing techniques set device supply levels at 36V, limiting available output swing. Additionally, supplying currents beyond tens of milliamperes requires large output transistors and causes u ...
... Most monolithic amplifiers cannot supply more than a few hundred milliwatts of output power. Standard IC processing techniques set device supply levels at 36V, limiting available output swing. Additionally, supplying currents beyond tens of milliamperes requires large output transistors and causes u ...
Introduction
... at very high m agnifications d ow n to t he scale of individual ato m s. The STM d oe s t his by m echa nically scan ning a s har p t u ngs te n tip over t he s u rface (sa m ple to be sca n ne d). Piezoelectric ele me nt s can p r ovide t he necessary s m all tra nslations of t he tip. A bias volta ...
... at very high m agnifications d ow n to t he scale of individual ato m s. The STM d oe s t his by m echa nically scan ning a s har p t u ngs te n tip over t he s u rface (sa m ple to be sca n ne d). Piezoelectric ele me nt s can p r ovide t he necessary s m all tra nslations of t he tip. A bias volta ...
AP2552-53(A) - Diodes Incorporated
... An internal sensing FET is employed to check for over-current conditions. Unlike current-sense resistors, sense FETs do not increase the series resistance of the current path. When an overcurrent condition is detected, AP2552/53 maintains a constant output current and reduces the output voltage acco ...
... An internal sensing FET is employed to check for over-current conditions. Unlike current-sense resistors, sense FETs do not increase the series resistance of the current path. When an overcurrent condition is detected, AP2552/53 maintains a constant output current and reduces the output voltage acco ...
Coordinated voltage control of a decoupled three
... operator and the PV inverter. Several articles [14–17] have been published regarding this project. In [18], a coordinated strategy for voltage control in distribution networks is investigated, where the automatic voltage controller installed at the primary substation cooperates with the DG controlle ...
... operator and the PV inverter. Several articles [14–17] have been published regarding this project. In [18], a coordinated strategy for voltage control in distribution networks is investigated, where the automatic voltage controller installed at the primary substation cooperates with the DG controlle ...
speed control of dc motor using combined armature and field control
... direct current through the field windings. It's this magnetic attraction and repulsion that causes the rotor to rotate. The greatest advantage of DC motors may be speed control. Since speed is directly proportional to armature voltage and inversely proportional to the magnetic flux produced by the p ...
... direct current through the field windings. It's this magnetic attraction and repulsion that causes the rotor to rotate. The greatest advantage of DC motors may be speed control. Since speed is directly proportional to armature voltage and inversely proportional to the magnetic flux produced by the p ...
UNISONIC TECHNOLOGIES CO., LTD CCVGA7C5
... ideally be connected to the ground of the video DAC IC. This will prevent any ground bounce caused by digital signals from injecting noise onto the R, G and B signals. Analog GND and digital GND are typically connected on the printed circuit board. ...
... ideally be connected to the ground of the video DAC IC. This will prevent any ground bounce caused by digital signals from injecting noise onto the R, G and B signals. Analog GND and digital GND are typically connected on the printed circuit board. ...
4.0 A, 40 V NPN Bipolar Power Transistor
... a transistor; average junction temperature and second breakdown. Safe operating area curves indicate IC − VCE limits of the transistor that must be observed for reliable operation; i.e., the transistor must not be subjected to greater dissipation than the curves indicate. The data of Figure 11 is ba ...
... a transistor; average junction temperature and second breakdown. Safe operating area curves indicate IC − VCE limits of the transistor that must be observed for reliable operation; i.e., the transistor must not be subjected to greater dissipation than the curves indicate. The data of Figure 11 is ba ...
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.