Q.bloxx A109 - Gantner Instruments
... Applications range from single, stand-alone solutions to networked, multi-channel systems in real-world areas such as component testing, engine testing, process performance testing, materials testing and structural monitoring. ...
... Applications range from single, stand-alone solutions to networked, multi-channel systems in real-world areas such as component testing, engine testing, process performance testing, materials testing and structural monitoring. ...
iD8783 - iDESYN
... There is a cycle-by-cycle current limit on the high-side MOSFET of 3A (typ). When the current flowing out of SW exceeds this limit, the high-side MOSFET turns off and the synchronous rectifier turns on. Unlike the traditional method of current limiting by limiting the voltage at the compensation pin ...
... There is a cycle-by-cycle current limit on the high-side MOSFET of 3A (typ). When the current flowing out of SW exceeds this limit, the high-side MOSFET turns off and the synchronous rectifier turns on. Unlike the traditional method of current limiting by limiting the voltage at the compensation pin ...
IMPROVEMENT OF THD USING FUZZY LOGIC BASED PWM
... This paper presents Fuzzy logic based control of matrix converters for AC drives.Matrix Converters can directly convert ac power supply of fixed voltage into ac voltage of variable amplitude and frequency. Matrix Converter is a single stage converter. The matrix converters can contribute to the real ...
... This paper presents Fuzzy logic based control of matrix converters for AC drives.Matrix Converters can directly convert ac power supply of fixed voltage into ac voltage of variable amplitude and frequency. Matrix Converter is a single stage converter. The matrix converters can contribute to the real ...
improvement of thd using fuzzy logic based pwm modulation
... This paper presents Fuzzy logic based control of matrix converters for AC drives.Matrix Converters can directly convert ac power supply of fixed voltage into ac voltage of variable amplitude and frequency. Matrix Converter is a single stage converter. The matrix converters can contribute to the real ...
... This paper presents Fuzzy logic based control of matrix converters for AC drives.Matrix Converters can directly convert ac power supply of fixed voltage into ac voltage of variable amplitude and frequency. Matrix Converter is a single stage converter. The matrix converters can contribute to the real ...
Zenone Frequency and Voltage Converter Datasheet
... FVC series static converters provide a symmetrical and balanced system of three-phase sinusoidal voltage with the possibility to vary output voltage and frequency. With them it’s possible to test equipments that can not be supplied by conventional mains grid; they allow to create patterns of voltage ...
... FVC series static converters provide a symmetrical and balanced system of three-phase sinusoidal voltage with the possibility to vary output voltage and frequency. With them it’s possible to test equipments that can not be supplied by conventional mains grid; they allow to create patterns of voltage ...
zvs-pwm full-bridge converter with reduced conduction losses
... The dc–dc zero-voltage-switched (ZVS) pulse-width modulated (PWM) fullbridge (FB) converter is widely used in industry for dc–dc power conversion. With ZVS operation, it is possible to operate the converter with high switching frequency using MOSFET so that its size can be reduced without generating ...
... The dc–dc zero-voltage-switched (ZVS) pulse-width modulated (PWM) fullbridge (FB) converter is widely used in industry for dc–dc power conversion. With ZVS operation, it is possible to operate the converter with high switching frequency using MOSFET so that its size can be reduced without generating ...
IMPLEMENTATION OF SINGLE STAGE FULL BRIDGE SERIES
... field, the input to the voltage source PWM inverters is a stiff dc voltage supply. Because the inverter switches operate in a switch mode, the inverter switching devices are subjected to very high switching stresses and switching power losses that increase linearly with the switching frequency of th ...
... field, the input to the voltage source PWM inverters is a stiff dc voltage supply. Because the inverter switches operate in a switch mode, the inverter switching devices are subjected to very high switching stresses and switching power losses that increase linearly with the switching frequency of th ...
Circuits #3 - Electro Tech Online
... Electricity and magnetism will affect each other. The flow of current affects magnetic fields, and magnetic fields affect current flow ...
... Electricity and magnetism will affect each other. The flow of current affects magnetic fields, and magnetic fields affect current flow ...
Controlling the Motor
... PWM Generation • Perform Clarke Transformation • Determines equivalent α and β values in rotated reference frame ...
... PWM Generation • Perform Clarke Transformation • Determines equivalent α and β values in rotated reference frame ...
Sunrise Alarm Clock for the Hearing Impaired
... hearing impaired became apparent • Current alarm clocks for the hearing impaired – Flashing lights – Bed vibrators – Adjustable frequency, high decibel audio alarms ...
... hearing impaired became apparent • Current alarm clocks for the hearing impaired – Flashing lights – Bed vibrators – Adjustable frequency, high decibel audio alarms ...
is31lt3117 53v, 350ma, 4-channel constant current regulator
... currents of up to 350mA per channel to drive high brightness LEDs over an input voltage range of 6V to 53V, while maintaining an output leakage current of less than 1uA. The sink current is easily programmed using a single external resistor. The current sinks of the IS31LT3117 may be connected in pa ...
... currents of up to 350mA per channel to drive high brightness LEDs over an input voltage range of 6V to 53V, while maintaining an output leakage current of less than 1uA. The sink current is easily programmed using a single external resistor. The current sinks of the IS31LT3117 may be connected in pa ...
DC385 - LTC1778EGN Evaluation Kit Quick Start Guide
... valley current control architecture to deliver very low duty cycles without requiring a sense resistor. It provides high efficiency operation at light loads by means of discontinuous mode operation. Noise and RF interference are reduced by means of a forced continuous control pin. The circuit uses a ...
... valley current control architecture to deliver very low duty cycles without requiring a sense resistor. It provides high efficiency operation at light loads by means of discontinuous mode operation. Noise and RF interference are reduced by means of a forced continuous control pin. The circuit uses a ...
design of sinusoidal pulse width modulation inverter
... constant and it is only possible by changing voltage too as it is the only other variable term. If the frequency is reduced than voltage must be increased to make the flux constant. Hence we are keeping the ratio of V / f constant. C. Total Harmonic Distortion (THD) effect in Induction Motor The adv ...
... constant and it is only possible by changing voltage too as it is the only other variable term. If the frequency is reduced than voltage must be increased to make the flux constant. Hence we are keeping the ratio of V / f constant. C. Total Harmonic Distortion (THD) effect in Induction Motor The adv ...
6.302 Feedback Systems
... Prof. Joel L. Dawson In the waveform that you just analyzed, the parameter “D” is called the duty cycle. Modulating, or changing, the duty cycle in order to achieve a certain DC value is a common control technique. It is called pulse width modulation, or PWM. One of the places PWM is useful is in vo ...
... Prof. Joel L. Dawson In the waveform that you just analyzed, the parameter “D” is called the duty cycle. Modulating, or changing, the duty cycle in order to achieve a certain DC value is a common control technique. It is called pulse width modulation, or PWM. One of the places PWM is useful is in vo ...
BC4102392396
... the compensator to filter the high frequency switching noise of the voltage at PCC. The STATCOM used in distribution systems is called DSTACOM (DistributionSTACOM) and its configuration is the same, but with small modifications. It can exchange both active and reactive power with the distribution sy ...
... the compensator to filter the high frequency switching noise of the voltage at PCC. The STATCOM used in distribution systems is called DSTACOM (DistributionSTACOM) and its configuration is the same, but with small modifications. It can exchange both active and reactive power with the distribution sy ...
What hap- pens inside a micro- phone once a sensor detects a
... sound. This is where substrates — materials such as stretchy plastics to which piezo films can be attached— and signal processing come in. Substrates amplify the film’s vibration, making a larger vibration that generates a greater voltage. Signal processors such as amplifiers increase the strength o ...
... sound. This is where substrates — materials such as stretchy plastics to which piezo films can be attached— and signal processing come in. Substrates amplify the film’s vibration, making a larger vibration that generates a greater voltage. Signal processors such as amplifiers increase the strength o ...
the transformerless single-phase universal active power filter for
... with the grid. EXISTING SYSTEM: The series active power filter (SAPF) provides load voltage control eliminating voltage disturbances, such as unbalance, sags, notches, flickers, and voltage harmonics, so that a regulated fundamental load voltage with constant magnitude is provided to the load. The p ...
... with the grid. EXISTING SYSTEM: The series active power filter (SAPF) provides load voltage control eliminating voltage disturbances, such as unbalance, sags, notches, flickers, and voltage harmonics, so that a regulated fundamental load voltage with constant magnitude is provided to the load. The p ...
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.