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high speed low power multi–threshold voltage flip flops
high speed low power multi–threshold voltage flip flops

A Novel Structure of Wide-Swing CMOS Voltage Buffer
A Novel Structure of Wide-Swing CMOS Voltage Buffer

... “flipped voltage follower” by the fact that a bias current IB is injected to drain instead of source terminals of MA. Compared with the traditional source follower circuit, following behavior of the circuit in Fig.1a is far better because the drain current of MA is regulated by constant current sour ...
Sensorless position control of permanent magnet motors with
Sensorless position control of permanent magnet motors with

... the coordinate transformation of the vector current control and for the injection of the high-frequency current signal. The LUT values were obtained using equation (6) together with the measured inductances. It can be also derived directly during the experiments. As a matter of fact the compensating ...
BD9300F
BD9300F

... set the capacitor. It is recommended to set the capacitance value in the range of 0.01 to 10 μF. Setting the capacitance value to 0.01 μF or less, may cause overshoot to the output voltage, while setting it to 10 μF or more may cause an inverse current in the internal parasitic diode when the power ...
Aalborg Universitet Drive Applications
Aalborg Universitet Drive Applications

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standing wave

... When the length of transmission line is longer than several wavelengths at the signal frequency, the two parallel conductors of the transmission line appear as a complex impedance. An RF generator connected to a considerable length of transmission line sees an impedance that is a function of the i ...
Model 5077PR USER`S MANUAL
Model 5077PR USER`S MANUAL

... amplified RF signal is available as output for display on an oscilloscope, or for processing by a Waveform digitizer or other instrumentation. ...
Phototriac dV/dt Application Note
Phototriac dV/dt Application Note

... inductive load, have lagging displacement power factors associated with them (the inductive load’s voltage leads its current). This presents a unique problem with TRIAC circuits, in that there is a limitation to how fast the load voltage can change and still allow sufficient time for the TRIAC to tu ...
Crct-dsn-home-ent-audio+EMC-100818
Crct-dsn-home-ent-audio+EMC-100818

... • Bulk decoupling caps in low-power circuits can also be good quality ceramic SMD components, in X5R or better material. • Use high-quality electrolytics as bulk decoupling caps in high-power circuits to give the needed capacitance in reasonably small volume. • These should be radial-lead parts, bec ...
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Archived: FP-RLY-420 Operating Instructions
Archived: FP-RLY-420 Operating Instructions

... damage the relay contacts and greatly shorten the life of the relay. It is best to limit flyback voltages by installing a flyback diode across an inductive DC load or a metal oxide varistor (MOV) across an inductive AC load. The FP-RLY-420 has internal protection MOVs to prevent excessively high vol ...
D.J. Perreault, “A New Power Combining and Outphasing Modulation System for High-Efficiency Power Amplifiers,” 2010 IEEE Midwest Symposium on Circuits and Systems , pp. 441-444, Aug. 2010.
D.J. Perreault, “A New Power Combining and Outphasing Modulation System for High-Efficiency Power Amplifiers,” 2010 IEEE Midwest Symposium on Circuits and Systems , pp. 441-444, Aug. 2010.

... This result demonstrates that the new outphasing scheme can smoothly control output power over a wide range down to zero power. Also of practical importance are the effective impedances seen by the individual power amplifiers across the control range. Figure 4 shows the real and imaginary components ...
Reliability Improving Approach with Opto
Reliability Improving Approach with Opto

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801K Premium Tone and Probe Kit

... The 200FP Filter probe offers three types of noise filtration, and is capable of virtually eliminating power related noise from the tone-and-probe operation by selectively filtering out all 50Hz and 50Hz* harmonics. Used in conjunction with any tone generator, the units permit wire and cable identif ...
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H3CA - OMRON Industrial Automation

... these power supplies can damage internal circuits. The power supply connections to the H3CA-A and H3CA-FA can be made without regard to polarity for both AC and DC power supplies; just connect to the specified terminals (2 and 10, or A1 and A2). When connecting a DC power supply to the H3CA-8 or H3C ...
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The Effect of Ripple Steering on Control Loop Stability for a CCM

... Furthermore, with ripple steering, the discharge resistor that must be placed in parallel to Cx for safety reasons can be higher. As a result, both losses are minimized. With ripple steering, the control strategy for the PFC stage is similar to that of a conventional boost converter, but the power s ...
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flow measurement technology - BEDA Flow Systems Pvt. Ltd.

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Electronics World September 1996 - Elliott Sound Products
Electronics World September 1996 - Elliott Sound Products

... • For a good quality grade of core laminations to ensure a low level of core-induced distortion, due to magnetic hysteresis and similar effects. Intrinsic signal distortion of a valve amplifier stage could range from 0.5 to 10%, depending on its circuit form and operating characteristics. It had bee ...
MC14569B - Programmable Divide-By-N Dual 4
MC14569B - Programmable Divide-By-N Dual 4

... Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. 2. Data labelled “Typ” is not to be used for design ...
AN-111 Introduction Power Ground Rules General PCB Design and Layout Guidelines
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PDF
PDF

Aalborg Universitet Stability Constrained Efficiency Optimization for Droop Controlled DC-DC Conversion
Aalborg Universitet Stability Constrained Efficiency Optimization for Droop Controlled DC-DC Conversion

High Efficiency Motor Protection Industry White Paper
High Efficiency Motor Protection Industry White Paper

... is essentially the LRC for that current phase. However, if the circuit is energized when the voltage is zero the initial inrush current is made completely asymmetrical, that is, shifted from the nominal current axis (refer to Figure 2). This makes the inrush current greater than the LRC for that cur ...
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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.
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