Course Outline Basic Concepts in RF Design Low
... The LO waveform must ideally be a square wave to ensure abrupt switching and hence maximum conversion gain. if VLO changes gradually, then the two phases remain approximately equal for a substantial fraction of the period (∆ ∆T). During this time, all four transistors are on, treating VRF as a com ...
... The LO waveform must ideally be a square wave to ensure abrupt switching and hence maximum conversion gain. if VLO changes gradually, then the two phases remain approximately equal for a substantial fraction of the period (∆ ∆T). During this time, all four transistors are on, treating VRF as a com ...
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... Two external capacitors are required for operation of the device; however, the on-chip chopper-control circuitry is transparent to the user. On devices in the 14-pin and 20-pin packages, the control circuitry is made accessible to allow the user the option of controlling the clock frequency with an ...
... Two external capacitors are required for operation of the device; however, the on-chip chopper-control circuitry is transparent to the user. On devices in the 14-pin and 20-pin packages, the control circuitry is made accessible to allow the user the option of controlling the clock frequency with an ...
TLC252, TLC252A, TLC252B, TLC252Y, TLC25L2, TLC25L2A, TLC25L2B
... TLC252/ 25_2 series include many areas that have previously been limited to BIFET and NFET product types. Any circuit using high-impedance elements and requiring small offset errors is a good candidate for cost-effective use of these devices. Many features associated with bipolar technology are avai ...
... TLC252/ 25_2 series include many areas that have previously been limited to BIFET and NFET product types. Any circuit using high-impedance elements and requiring small offset errors is a good candidate for cost-effective use of these devices. Many features associated with bipolar technology are avai ...
Helios Rectifier 25/48 Single Phase
... Introduction.............................................................................................................. 11 ...
... Introduction.............................................................................................................. 11 ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-ISSN: 2278-1676,p-ISSN: 2320-3331,
... In the past decade, the controller for the PWM switching control is restraining to Proportional-IntegralDifferential (PID) controller. This controller often applied to the converters because of their simplicity. However, implementations of this control method to the nonlinear plants such as the powe ...
... In the past decade, the controller for the PWM switching control is restraining to Proportional-IntegralDifferential (PID) controller. This controller often applied to the converters because of their simplicity. However, implementations of this control method to the nonlinear plants such as the powe ...
3-Pole and 4-Pole Transfer Switch Switching Characteristics
... It is reasonable to ask about the likelihood of a ground fault occurring during the short time that the neutral contacts are overlapped. Certainly it is as likely as any other time, but perhaps it is slightly more likely during the period of the transition for the following reasons. As those who per ...
... It is reasonable to ask about the likelihood of a ground fault occurring during the short time that the neutral contacts are overlapped. Certainly it is as likely as any other time, but perhaps it is slightly more likely during the period of the transition for the following reasons. As those who per ...
IPM L1/S1-series APPLICATION NOTE
... x Keep sipping cartons right side up. If stress is applied by either placing a carton upside down or by leaning a box against something, terminals can be bent and/or resin packages can be damaged. x Tossing or dropping of a carton may damage devices inside. x If a device gets wet with water, malfunc ...
... x Keep sipping cartons right side up. If stress is applied by either placing a carton upside down or by leaning a box against something, terminals can be bent and/or resin packages can be damaged. x Tossing or dropping of a carton may damage devices inside. x If a device gets wet with water, malfunc ...
UM0355
... The objective of the Safe ST7 Evaluation Board is to allow you to try out all the special features embedded in the ST72F26x MCU family. You can learn how each feature works and how to use them the best way by playing with the user controls and jumper settings. For example, you can check out what hap ...
... The objective of the Safe ST7 Evaluation Board is to allow you to try out all the special features embedded in the ST72F26x MCU family. You can learn how each feature works and how to use them the best way by playing with the user controls and jumper settings. For example, you can check out what hap ...
MAX1142/MAX1143 14-Bit ADC, 200ksps, +5V Single-Supply with Reference General Description
... MAX1142/MAX1143 have on-demand software calibration. Initiate calibration by writing a Control-Byte with bit M1 = 0, and bit M0 = 1 (See Table 1). Select internal or external clock for calibration by setting the INT/EXT bit in the Control-Byte. Calibrate the MAX1142/MAX1143 with the clock used for p ...
... MAX1142/MAX1143 have on-demand software calibration. Initiate calibration by writing a Control-Byte with bit M1 = 0, and bit M0 = 1 (See Table 1). Select internal or external clock for calibration by setting the INT/EXT bit in the Control-Byte. Calibrate the MAX1142/MAX1143 with the clock used for p ...
MAX9424–MAX9427 Lowest Jitter Quad PECL-to-ECL Differential Translators General Description
... Thevenin terminations. Terminate both outputs of a differential pair and use identical termination on each for the lowest output-to-output skew. When a single-ended signal is taken from a differential output, terminate both outputs. For example, if OUT0 is used as a singleended output, terminate bot ...
... Thevenin terminations. Terminate both outputs of a differential pair and use identical termination on each for the lowest output-to-output skew. When a single-ended signal is taken from a differential output, terminate both outputs. For example, if OUT0 is used as a singleended output, terminate bot ...
POWER METER PW3336, PW3337
... 2 IEC61000-4-7 compliant harmonic measurement 3 Large selection of interfaces The PW3336/PW3337 supports measurement that complies with IEC 61000-4-7:2002, the international standard governing harmonic measurement. The power meters can measure voltage, current, and power harmonics up to the 50th ord ...
... 2 IEC61000-4-7 compliant harmonic measurement 3 Large selection of interfaces The PW3336/PW3337 supports measurement that complies with IEC 61000-4-7:2002, the international standard governing harmonic measurement. The power meters can measure voltage, current, and power harmonics up to the 50th ord ...
MAX13223E ±70V Fault-Protected, 3.0V to 5.5V, 2Tx/2Rx RS-232 Transceiver General Description
... Active (Forced On) ...
... Active (Forced On) ...
Voltage recovery after unbalanced and balanced voltage dips in
... three-phase systems has been studied. The recovery is different for different types of faults. For dips due to single-phase and phase-to-phase faults, the recovery takes place in only one step, so that a point-on-wave of voltage recovery can be defined. For dips due to two-phase-to-ground and three- ...
... three-phase systems has been studied. The recovery is different for different types of faults. For dips due to single-phase and phase-to-phase faults, the recovery takes place in only one step, so that a point-on-wave of voltage recovery can be defined. For dips due to two-phase-to-ground and three- ...
LT6105 Precision, Extended Input Range Current Sense Amplifi er FEATURES
... Operating Current: 150μA Slew Rate: 2V/μs Sense Input Current When Powered Down: 1nA Full-Scale Output Current: 1mA Minimum Operating Temperature Range –40°C to 125°C Available in 2mm × 3mm DFN and 8-Lead MSOP ...
... Operating Current: 150μA Slew Rate: 2V/μs Sense Input Current When Powered Down: 1nA Full-Scale Output Current: 1mA Minimum Operating Temperature Range –40°C to 125°C Available in 2mm × 3mm DFN and 8-Lead MSOP ...
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.