A Monolithic High-Efficiency 2.4-GHz 20-dBm SiGe BiCMOS Envelope-Tracking OFDM Power Amplifier
... the signal bandwidth [2], [29]. For narrow-bandwidth applications, most high-efficiency switching-mode DC/DC converters for PA applications are realized by traditional delta-sigma [13], [27], [30], [31] or pulsewidth modulation (PWM) [9], [32], [33] modulators. However, the high switching frequency ...
... the signal bandwidth [2], [29]. For narrow-bandwidth applications, most high-efficiency switching-mode DC/DC converters for PA applications are realized by traditional delta-sigma [13], [27], [30], [31] or pulsewidth modulation (PWM) [9], [32], [33] modulators. However, the high switching frequency ...
Generator Owner VSS MEN_LCRA-v1
... of 0.95 or less, both determined at the generating unit's maximum net power to be supplied to the ERCOT Transmission Grid and at the transmission system Voltage Profile established by ERCOT, and both measured at the POI. The Reactive Power Capability requirements shall be available at all MW output ...
... of 0.95 or less, both determined at the generating unit's maximum net power to be supplied to the ERCOT Transmission Grid and at the transmission system Voltage Profile established by ERCOT, and both measured at the POI. The Reactive Power Capability requirements shall be available at all MW output ...
ADE7761B 数据手册DataSheet 下载
... Power Supply. This pin provides the supply voltage for the digital circuitry in the ADE7761B. The supply voltage should be maintained at 5 V ± 5% for specified operation. This pin should be decoupled with a 10 μF capacitor in parallel with a ceramic 100 nF capacitor. Analog Inputs for Channel V1 (Cu ...
... Power Supply. This pin provides the supply voltage for the digital circuitry in the ADE7761B. The supply voltage should be maintained at 5 V ± 5% for specified operation. This pin should be decoupled with a 10 μF capacitor in parallel with a ceramic 100 nF capacitor. Analog Inputs for Channel V1 (Cu ...
Appendix A Specifications and Quick Starts
... to set modes and to import waveforms. At the highest level, instruments like the Tek oscilloscope and others produced by leading-edge companies like HewlettPackard, LeCroy, Keithley, Fluke and others respond to a set of commands and queries that have a definite logic and structure to them. Just as v ...
... to set modes and to import waveforms. At the highest level, instruments like the Tek oscilloscope and others produced by leading-edge companies like HewlettPackard, LeCroy, Keithley, Fluke and others respond to a set of commands and queries that have a definite logic and structure to them. Just as v ...
6 The Amplifier Experiment 6.1
... Figure 6.3: Output voltage with and without AC coupling, for input voltage that varies between 5 and 15 mV. If instead, we had connected the signal into channel A to the reference (with our input signal connected to B) we would get essentially the same result but with a minus sign, i.e. output = k × ...
... Figure 6.3: Output voltage with and without AC coupling, for input voltage that varies between 5 and 15 mV. If instead, we had connected the signal into channel A to the reference (with our input signal connected to B) we would get essentially the same result but with a minus sign, i.e. output = k × ...
Technical information for micro switches
... varying with stroke. In the vicinity of the O.P. and R.P., the contact force is diminished, causing chatter and contact bounce immediately before or after reversal. For this reason, use the switch while giving due consideration to this. This also causes the snap action switch to be sensitive to vibr ...
... varying with stroke. In the vicinity of the O.P. and R.P., the contact force is diminished, causing chatter and contact bounce immediately before or after reversal. For this reason, use the switch while giving due consideration to this. This also causes the snap action switch to be sensitive to vibr ...
Introduction to Switched-Mode Power Supply (SMPS) circuits
... Details of some popular SMPS circuits, with provisions for incorporating high frequency transformer for voltage scaling and isolation, have been discussed in next few lessons. In this lesson a simplified schematic switching arrangement is described that omits the transformer action. In fact there ar ...
... Details of some popular SMPS circuits, with provisions for incorporating high frequency transformer for voltage scaling and isolation, have been discussed in next few lessons. In this lesson a simplified schematic switching arrangement is described that omits the transformer action. In fact there ar ...
DRV8801-Q1 DMOS Full-Bridge Motor Drivers
... The current flowing through the high-side and low-side drivers is monitored to ensure that the motor lead is not shorted to supply or ground. If a short is detected, the full-bridge outputs are turned off, flag nFAULT is driven low, and a 1.2-ms fault timer is started. After this 1.2-ms period, tOCP ...
... The current flowing through the high-side and low-side drivers is monitored to ensure that the motor lead is not shorted to supply or ground. If a short is detected, the full-bridge outputs are turned off, flag nFAULT is driven low, and a 1.2-ms fault timer is started. After this 1.2-ms period, tOCP ...
MAX2163 EV kit - Maxim Integrated
... 3) With its output disabled, set the RF signal generator to a 557.143MHz frequency and a -100dBm power level. Connect the output of the RF signal generator to the SMA connector labeled UHF on the evaluation board. 4) Connect a 25-pin parallel cable between the PC’s parallel port and the MAX2163 eval ...
... 3) With its output disabled, set the RF signal generator to a 557.143MHz frequency and a -100dBm power level. Connect the output of the RF signal generator to the SMA connector labeled UHF on the evaluation board. 4) Connect a 25-pin parallel cable between the PC’s parallel port and the MAX2163 eval ...
UPAMD OperationalFlowChart201103111100
... System stays in this state and delivers power until requested otherwise or the connection is lost. This state continuously loops through a series of tests for changes of conditions that need attention. The loop is broken by a disconnect of the load communications connection with the source port. Th ...
... System stays in this state and delivers power until requested otherwise or the connection is lost. This state continuously loops through a series of tests for changes of conditions that need attention. The loop is broken by a disconnect of the load communications connection with the source port. Th ...
Symmetric Gto And Snubber Component Characterization In Pwm
... inverter topologies. For medium-voltage (2300–6900 V) applications, pulsewidth modulation (PWM) current-source inverters (CSI’s) [PWM CSI’s] with symmetric gate turn-off thyristors (GTO’s) have been successfully implemented on induction machine applications. The simplified circuit diagram is shown i ...
... inverter topologies. For medium-voltage (2300–6900 V) applications, pulsewidth modulation (PWM) current-source inverters (CSI’s) [PWM CSI’s] with symmetric gate turn-off thyristors (GTO’s) have been successfully implemented on induction machine applications. The simplified circuit diagram is shown i ...
dl 2617 six pulse control unit
... • Single-quadrant drive with converter B2C and armature voltage feedback • Single-quadrant drive with converter B2C and armature voltage feedback with RI compensation • Single-quadrant drive with converter B2C and tacho-voltage feedback • Single-quadrant drive with converter B2C and tacho-voltage fe ...
... • Single-quadrant drive with converter B2C and armature voltage feedback • Single-quadrant drive with converter B2C and armature voltage feedback with RI compensation • Single-quadrant drive with converter B2C and tacho-voltage feedback • Single-quadrant drive with converter B2C and tacho-voltage fe ...
ECN33550 FP (PDF format, 406kBytes)
... Power Semiconductor Device, Ltd. needs to meet specifications described in this specification document. Specific testing of all parameters of each device is not necessarily performed, except those mandated by related laws and/or regulations. (2) Should any claim be made within one month of product d ...
... Power Semiconductor Device, Ltd. needs to meet specifications described in this specification document. Specific testing of all parameters of each device is not necessarily performed, except those mandated by related laws and/or regulations. (2) Should any claim be made within one month of product d ...
HIP2103-4DEMO2Z User Guide
... VCen and VDen enable inputs are available to control the VDD and VCC regulator outputs of the HIP2104. All boot capacitors and other necessary external parts are included in the module allowing the user to quickly apply this module to his motor drive applications with little or no changes to the mod ...
... VCen and VDen enable inputs are available to control the VDD and VCC regulator outputs of the HIP2104. All boot capacitors and other necessary external parts are included in the module allowing the user to quickly apply this module to his motor drive applications with little or no changes to the mod ...
Crct-dsn-portable-audio+EMC-090112
... caps feeding loudspeaker loads to give the needed capacitance in reasonably small volume. • These should be radial-lead parts, because selfinductance is lower than in axial parts. • They should be low-ESR caps with ripple current ratings greater than peak load currents, to avoid issues with load cur ...
... caps feeding loudspeaker loads to give the needed capacitance in reasonably small volume. • These should be radial-lead parts, because selfinductance is lower than in axial parts. • They should be low-ESR caps with ripple current ratings greater than peak load currents, to avoid issues with load cur ...
Voltage optimisation Measurement and Verification guidance
... These are constant power devices and have their own power regulators. They operate satisfactorily within an operating voltage range. If 30 % or more of a site’s electrical load is made up of switch mode power supplies (SMPS), such as information technology in particular, the supplying circuit’s suit ...
... These are constant power devices and have their own power regulators. They operate satisfactorily within an operating voltage range. If 30 % or more of a site’s electrical load is made up of switch mode power supplies (SMPS), such as information technology in particular, the supplying circuit’s suit ...
ISOLATION TRANSFORMER IPXFMR FEATURES APPLICATIONS
... The IPXFMR is a multiple output isolated power supply board providing up to six (6) 24V AC isolated outputs. This module serves to provide the addition isolation needed to avoid ground loops and power supply incompatibilities, when using interface products that use fullwave bridge rectifiers in thei ...
... The IPXFMR is a multiple output isolated power supply board providing up to six (6) 24V AC isolated outputs. This module serves to provide the addition isolation needed to avoid ground loops and power supply incompatibilities, when using interface products that use fullwave bridge rectifiers in thei ...
CQ23562567
... equipments. The technologies like custom power devices are emerged to provide protection against power quality problems. Custom power devices are mainly of three categories such as series-connected compensator like dynamic voltage restorer (DVR), shunt connected compensator such as distribution stat ...
... equipments. The technologies like custom power devices are emerged to provide protection against power quality problems. Custom power devices are mainly of three categories such as series-connected compensator like dynamic voltage restorer (DVR), shunt connected compensator such as distribution stat ...
General Description Features
... The MAX5318 evaluation kit (EV kit) provides a proven design to evaluate the MAX5318 18-bit high-accuracy voltage output DAC with digital gain and offset control. The EV kit also includes Windows XP®-, Windows Vista®-, and Windows® 7-compatible software that provides a simple graphical user interfac ...
... The MAX5318 evaluation kit (EV kit) provides a proven design to evaluate the MAX5318 18-bit high-accuracy voltage output DAC with digital gain and offset control. The EV kit also includes Windows XP®-, Windows Vista®-, and Windows® 7-compatible software that provides a simple graphical user interfac ...
A Park transform-based method for condition monitoring of three-phase electromechanical systems
... A principal benefit of this transformation is that the 60 Hz components of the electrical waveforms can be eliminated by synchronizing the transform with the electrical angle of the utility. The resulting transformed waveforms can expose small changes in the machine behavior [10]. The transformation ...
... A principal benefit of this transformation is that the 60 Hz components of the electrical waveforms can be eliminated by synchronizing the transform with the electrical angle of the utility. The resulting transformed waveforms can expose small changes in the machine behavior [10]. The transformation ...
Notes on ASK, FSK and PSK
... The minimum theoretical bandwidth necessary to propagate a signal is called the minimum Nyquist bandwidth or sometimes the minimum Nyquist frequency. Thus, fb = 2B, where fb is the bit rate in bps and B is the ideal Nyquist bandwidth. ...
... The minimum theoretical bandwidth necessary to propagate a signal is called the minimum Nyquist bandwidth or sometimes the minimum Nyquist frequency. Thus, fb = 2B, where fb is the bit rate in bps and B is the ideal Nyquist bandwidth. ...
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.