... pre-charge circuit, current sense circuit and OPAMP buffer. Any switching power supply capable of operating from the system’s maximum required input voltage that can generate an 8-14 V output voltage with at least 200mA can be used for this function. This output voltage range is set by the VCC requi ...
Not Recommended For New Designs
... operate in light load mode to obtain high efficiency. The two modes of operation, PFM and PWM are determined by the peak inductor current level and the output feedback voltage. For very low output current and consequently low peak inductor current, AOZ1254 will operate under critical inductor curren ...
... operate in light load mode to obtain high efficiency. The two modes of operation, PFM and PWM are determined by the peak inductor current level and the output feedback voltage. For very low output current and consequently low peak inductor current, AOZ1254 will operate under critical inductor curren ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... Electricity is becoming a central need of human being. Presently maximum electricity is generated at thermal and hydro power plants. These plants depend upon coal which is limited on earth’s crust causing shortage of power supply. To overcome these shortcomings use of non-renewable sources is very m ...
... Electricity is becoming a central need of human being. Presently maximum electricity is generated at thermal and hydro power plants. These plants depend upon coal which is limited on earth’s crust causing shortage of power supply. To overcome these shortcomings use of non-renewable sources is very m ...
Brief Introduction of High-Speed for Optical Communication Systems
... Synchronous networks such as the Synchronous Digital Hierarchy (SDH) and the Synchronous Optical NETwork (SONET) rely on highly accurate and stable synchronization to process data in and out of network elements. Jitter is used to describe short term, noncumulative variations of the significant ins ...
... Synchronous networks such as the Synchronous Digital Hierarchy (SDH) and the Synchronous Optical NETwork (SONET) rely on highly accurate and stable synchronization to process data in and out of network elements. Jitter is used to describe short term, noncumulative variations of the significant ins ...
7. Application Circuits / Converter Array Design Considerations
... Remote Sensing. (Figure 7–4) Output voltage between +OUT and –OUT must be maintained below 110% of nominal. Do not exceed 0.25 V drop in negative return as the current limit setpoint is moved out proportionately. The sense should be closed at the module if remote sensing is not desired. Applies to V ...
... Remote Sensing. (Figure 7–4) Output voltage between +OUT and –OUT must be maintained below 110% of nominal. Do not exceed 0.25 V drop in negative return as the current limit setpoint is moved out proportionately. The sense should be closed at the module if remote sensing is not desired. Applies to V ...
Noise, Crosstalk, and Power Consumption
... Either can cause noise to be generated via Ground inductance To ensure low common path noise Must have low impedance ground connections between gates More generally the signal path has three components 1. The ground path 2. The power path 3. Path between power and ground Noise can arise from voltage ...
... Either can cause noise to be generated via Ground inductance To ensure low common path noise Must have low impedance ground connections between gates More generally the signal path has three components 1. The ground path 2. The power path 3. Path between power and ground Noise can arise from voltage ...
A Fast-stretcher for an easy acquisition of the fast component of
... to two QDC’s (Charge to Digital Converter) and using logical signals of different widths as gates. One gating signal is short to integrate the fast part of the signal only; the other is much longer to integrate the whole signal. Such a measurement technique has many inconveniences. One of the most c ...
... to two QDC’s (Charge to Digital Converter) and using logical signals of different widths as gates. One gating signal is short to integrate the fast part of the signal only; the other is much longer to integrate the whole signal. Such a measurement technique has many inconveniences. One of the most c ...
AND8425 - Detection Voltage Selection Guidelines for Application of
... Figure 1. General Block Diagram of NCP30X Family Series ...
... Figure 1. General Block Diagram of NCP30X Family Series ...
AD8682
... circuit takes only three packages to build because of the quad configuration of the op amps and DACs. The DACs shown are used in voltage mode; therefore, many values are dependent on the accuracy of the DAC only and not on the absolute values of the DAC resistive ladders. As a result, this makes the ...
... circuit takes only three packages to build because of the quad configuration of the op amps and DACs. The DACs shown are used in voltage mode; therefore, many values are dependent on the accuracy of the DAC only and not on the absolute values of the DAC resistive ladders. As a result, this makes the ...
Chapter 24 Three-Phase Voltage Generation
... requires three wattmeters (one meter per phase) Loads may be balanced or unbalanced Total power is sum of individual powers ...
... requires three wattmeters (one meter per phase) Loads may be balanced or unbalanced Total power is sum of individual powers ...
Evaluate: MAX8530/MAX8531 MAX8530/MAX8531 Evaluation Kit General Description Features
... low-noise MAX8531 in a 6-pin UCSP™ package is used for this circuit. PC board pads for the SHDN signal are provided on the circuit to interface with an external controller. The MAX8530/MAX8531 EV kit provides on-board shutdown control as well as a jumper-selectable RESET output voltage for the MAX85 ...
... low-noise MAX8531 in a 6-pin UCSP™ package is used for this circuit. PC board pads for the SHDN signal are provided on the circuit to interface with an external controller. The MAX8530/MAX8531 EV kit provides on-board shutdown control as well as a jumper-selectable RESET output voltage for the MAX85 ...
How Motors Operate Presented by John Freeland
... one turn coils. This arrangement gives rise to calling the motor a squirrel cage motor. The speed of a squirrel cage, split phase, induction motor is nearly constant with load and depends on the line frequency, number of poles and slip. The starting torque is 1.5 to 2.0 times the full-load torque Th ...
... one turn coils. This arrangement gives rise to calling the motor a squirrel cage motor. The speed of a squirrel cage, split phase, induction motor is nearly constant with load and depends on the line frequency, number of poles and slip. The starting torque is 1.5 to 2.0 times the full-load torque Th ...
Techforum Newsletter August 2011
... higher power factor and lower harmonic distortion than phase-controlled current-source inverter (CSI) and load-commutated inverter (LCI) drives. The drive controller can also be configured as a phase converter having single-phase converter input and three-phase inverter output. Controller advances h ...
... higher power factor and lower harmonic distortion than phase-controlled current-source inverter (CSI) and load-commutated inverter (LCI) drives. The drive controller can also be configured as a phase converter having single-phase converter input and three-phase inverter output. Controller advances h ...
PDF
... the flip side, long-term harmonics yield increased voltage stresses. This harmonic current can collaborate unfavorably with power system equipment like motors and transformers causing over loading, overheating and additional losses and can also create interference with the telecommunication system a ...
... the flip side, long-term harmonics yield increased voltage stresses. This harmonic current can collaborate unfavorably with power system equipment like motors and transformers causing over loading, overheating and additional losses and can also create interference with the telecommunication system a ...
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.