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USB Voltage and Current Output Devices
USB Voltage and Current Output Devices

... D/A LOAD signal from an external source. When the SYNCLD pin receives the trigger signal, the analog outputs are updated simultaneously. In master mode, the internal D/A LOAD signal is sent to the SYNCLD pin. You can then synchronize with a second device of the same type and simultaneously update th ...
Alternating Voltage Tests on distribution transformers - KIT
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... tests on distribution and power transformers is generated using motor-generator sets, providing amplitude- and frequency-variable output voltages for no-load tests, load tests and induced voltage tests. In the recent years strong efforts were made on the qualification of static frequency converters ...
Managing Power with CoolRunner-II CPLDs Summary
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... explains the activity of the various chips within the camera, but Figure 1 shows the composite power. There are many variables at play. Several chips within the camera receive power at different times. The display, camera chip and memories are involved here, but none of the standard cell phone capab ...
NCS36510 - Low Power System-on-Chip For 2.4 GHz
NCS36510 - Low Power System-on-Chip For 2.4 GHz

... The NCS36510 is a system on chip for IEEE 802.15.4−2006 applications. Many functions are integrated to lower cost while delivering high performance at the lowest power consumption. The NCS36510 PMU supports two supply voltage modes: 3 V and 1 V. In 3 V mode a voltage source from 2 V to 3.6 V is appl ...
Electrocardiogram Amplifier Design Using Basic Electronic
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... from scratch using op-amps & resistors – Powered by a 9V battery – Output displayed on oscilloscope – Input from an ECG signal simulator (MCI-430) ...
AN-639 APPLICATION NOTE Frequently Asked Questions (FAQs) Analog Devices Energy (ADE) Products
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... power is distributed in a single-phase, 3-wire configuration. Two wires, namely L1 and L2, have voltage signals that are 180º out of phase with each other and share a common neutral wire. In theory, two energy measurement ICs and two sensors are required. However, an approximation method (which is g ...
Harmonic Power Meter Model F25
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FAN5602 — Universal (Step-Up/Step-Down) Charge Pump Regulated DC/DC Converter F AN5

... The power transistors used in the charge pump are very large in size. The dynamic loss from the switching the power transistors is not small and increases its proportion of the total power consumption as the load gets light. To save power, the FAN5602 switches, when the load is less than 10mA, from ...
icmiee-pi
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Fairford Sizing Generators for Soft Starters
Fairford Sizing Generators for Soft Starters

... Since  the  starting  kVA  can  be  readily  calculated  from  the  motor/load  characteristics,  the  main  additional  influence  is  the  allowable  level  of  voltage  distortion.    Providing  the  generator AVR is immune to voltage distortion (see 4 below), the question is limited to the  dist ...
BLDC motor control with Hall sensor based on FRDM-KE02Z
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... insertion, polarity, fault control, and output forcing and masking, greatly reduce loading on the execution software and each of these are usually controlled by a group of registers. This application note uses the following features of the FTM module in KE02 MCU. • The input capture feature is used ...
More Circuit Components: Capacitors, Inductors, and Diodes
More Circuit Components: Capacitors, Inductors, and Diodes

... damage due to arcing when the points "break" the current flowing in the lowvoltage coil winding (in car manuals, this capacitor is referred to as a "condenser") ...
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... sensor to directly provide a clean digital interface. Because they have implemented all required compensation and linearization internally, their output is already a digital reading with an appropriate scale. If you purchase a commercial microcontroller (CPU) to interface the above sensors, it typic ...
Floating Oscilloscope Measurements and Operator
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Series connection of IGBTs

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... In this Section we build on the introductory material of Section 2.1 and describe more advanced methods for the analysis and control of the Servo Trainer. The ability to analyse a system, real or otherwise, is especially important in establishing the relevant design parameters for new plant or in pr ...
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SMP08

... of an 8-bit DAC with 10 V full scale. The hold step (magnitude of step caused in the output voltage when switching from sample-to-hold mode, also referred to as the pedestal error or sample-to-hold offset), is about 2.5 mV with little variation over the full output voltage range, TA = +25°C to +85°C ...
Ω - QSL.net
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... When used with SynQor’s DC-DC converters, the Mil-COTS EMI filter is designed to pass all of the relevant MIL-STD-461C/D/E requirements to their most stringent limits. The MIL-STD-461 Compliance Matrix Table lists these requirements and describes the setup used to pass them. Figures 3 - 6 show resul ...
Benefits of a multiphase buck converter
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... CSM and CS2 pins to the RC network located across the output inductor. Notice in the layout in Reference 1 that, in order to provide additional noise suppression, the filter capacitor is split into two capacitors—one positioned by the inductor and the other close to the IC. These sense lines should ...
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Instructions for Slo-Syn_en-US_RevA

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NJU7380

... It can control the stepping motor driver with STEP&DIR input signal to Phase input methods such as NJM3775, NJM3777. NJU7380 is also including Auto Current Down(ACD) circuit witch is suitable for reducing power dissipation of power devices and motor. ■ LOGIC BLOCK NJU7380 contains all phase logic ne ...
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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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