IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... Fig.2: pwm waveforms 2.2 Space Vector PWM (SVPWM) SV-PWM is just a modulation algorithm which translates phase voltage (phase to neutral) references, coming from the controller, into modulation times/duty-cycles to be applied to the PWM peripheral. It is a general technique for any three-phase load, ...
... Fig.2: pwm waveforms 2.2 Space Vector PWM (SVPWM) SV-PWM is just a modulation algorithm which translates phase voltage (phase to neutral) references, coming from the controller, into modulation times/duty-cycles to be applied to the PWM peripheral. It is a general technique for any three-phase load, ...
2.555new7 - WordPress.com
... internal transistor Qi ON within no time. But while discharging when Vc becomes (1/3 Vcc)/ the second comparator makes Qi OFF and C starts its charging again. As discharging time of capacitor C is very small, the time period of ramp is assumed practically same as that of charging time of capacitor. ...
... internal transistor Qi ON within no time. But while discharging when Vc becomes (1/3 Vcc)/ the second comparator makes Qi OFF and C starts its charging again. As discharging time of capacitor C is very small, the time period of ramp is assumed practically same as that of charging time of capacitor. ...
Transmitter and Receiver Circuit Design
... PDs (PDs) form the beginning of the Rx module. They capture and convert the optical signal into an electrical one, maintaining the data present in the original stream. As with previous components, the relevant factors for PDs will be dealt with later. The optical fibres used are multi-mode types, f ...
... PDs (PDs) form the beginning of the Rx module. They capture and convert the optical signal into an electrical one, maintaining the data present in the original stream. As with previous components, the relevant factors for PDs will be dealt with later. The optical fibres used are multi-mode types, f ...
AN3424
... based on the L6562A and the TSM101 controller (Figure 1). This configuration uses an isolated feedback with an optocoupler and a secondary side reference/error amplifier, the TSM101, for voltage and current regulation. The TSM101 includes two op amps: one op amp is used for constant voltage control ...
... based on the L6562A and the TSM101 controller (Figure 1). This configuration uses an isolated feedback with an optocoupler and a secondary side reference/error amplifier, the TSM101, for voltage and current regulation. The TSM101 includes two op amps: one op amp is used for constant voltage control ...
Lesson-5 Electronic Theory
... A short circuit can be caused by incoming power wires (wires that are normally insulated and kept separate) coming in contact with each other. Since a circuit usually has resistance, and the power wires that "short out" have very little resistance, the current will tend to flow through the path of l ...
... A short circuit can be caused by incoming power wires (wires that are normally insulated and kept separate) coming in contact with each other. Since a circuit usually has resistance, and the power wires that "short out" have very little resistance, the current will tend to flow through the path of l ...
Voltage Sag Mitigation in Distribution Line using DSTATCOM
... are one of the most occurring power quality problems. For an industry voltage sags occur more often and cause severe problems and economical losses. Utilities often focus on disturbances from end-user equipment as the main power quality problems [3]. Reactive power compensation is an important issue ...
... are one of the most occurring power quality problems. For an industry voltage sags occur more often and cause severe problems and economical losses. Utilities often focus on disturbances from end-user equipment as the main power quality problems [3]. Reactive power compensation is an important issue ...
Laboratory Exercise 1 – Voltage Dividers
... What two resistors could be used to decrease the voltage (Vout) to one quarter of its original value (Vin) ? Can you do the same thing with multiple copies of one type of resistor (explain how)? Derive the governing relationship for two-resistor voltage dividers, an equation that gives the voltage d ...
... What two resistors could be used to decrease the voltage (Vout) to one quarter of its original value (Vin) ? Can you do the same thing with multiple copies of one type of resistor (explain how)? Derive the governing relationship for two-resistor voltage dividers, an equation that gives the voltage d ...
Experiment FT1
... Capacitor, also known as an electrical condenser, is a device that can store electric charge or energy. It can also be used in various types of circuit functions involving: i) Oscillator (alternate charging and discharging of the capacitor); ii) Blocking the flow of direct current; iii) Filter (vary ...
... Capacitor, also known as an electrical condenser, is a device that can store electric charge or energy. It can also be used in various types of circuit functions involving: i) Oscillator (alternate charging and discharging of the capacitor); ii) Blocking the flow of direct current; iii) Filter (vary ...
Buck Current/Voltage Fed Push-Pull PWM Controllers
... shift, is fed to the noninverting input of the buck PWM comparator. A resistor to Vin and a capacitor to GND provide an input voltage feedforward signal for the buck controller in voltage mode control. In peak current mode control, the RAMP pin receives the current signal of the buck converter. In a ...
... shift, is fed to the noninverting input of the buck PWM comparator. A resistor to Vin and a capacitor to GND provide an input voltage feedforward signal for the buck controller in voltage mode control. In peak current mode control, the RAMP pin receives the current signal of the buck converter. In a ...
AN-776 20 Watt Simple Switcher Forward Converter (Rev. A)
... TI assumes no liability for applications assistance or the design of Buyers’ products. Buyers are responsible for their products and applications using TI components. To minimize the risks associated with Buyers’ products and applications, Buyers should provide adequate design and operating safeguar ...
... TI assumes no liability for applications assistance or the design of Buyers’ products. Buyers are responsible for their products and applications using TI components. To minimize the risks associated with Buyers’ products and applications, Buyers should provide adequate design and operating safeguar ...
RF systems
... The IUCF cooler injector synchrotron (CIS) is a low energy booster for the IUCF cooler ring. It accelerates protons (or light ions) from 7 MeV to 225 MeV. The cavity is a quarter-wave coaxial cavity with heavy capacitance loading. To make the cavity length reasonably short and to achieve rapid tunin ...
... The IUCF cooler injector synchrotron (CIS) is a low energy booster for the IUCF cooler ring. It accelerates protons (or light ions) from 7 MeV to 225 MeV. The cavity is a quarter-wave coaxial cavity with heavy capacitance loading. To make the cavity length reasonably short and to achieve rapid tunin ...
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.""