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LMX2216 - Texas Instruments
LMX2216 - Texas Instruments

... The LNA input and output ports are designed to interface to a 50X system. The Mixer input ports are matched to 50X. The output port is matched to 200X. The only external components required are DC blocking capacitors. The balanced architecture of the LMX2216 maintains consistent operating parameters ...
A/D Converter Specifications (Cont.)
A/D Converter Specifications (Cont.)

... Close cousin of the successive approximation converter. Has a up/down counter controlled by the comparator. If the input signal is higher or lower than the output of the D/A converter, the counter counts up or down, respectively. May quickly converge to the correct digital value when the signal is n ...
Performance Examples
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... In 1992, a patent was issued to the USES Manufacturing Company of Quaker Hill, CT (U.S. Patent #5,105,327) for a revolutionary new type of power conditioning system. The USES® Shunt Efficiency System provides a new and innovative approach to electrical circuit protection, power factor correction and ...
Product Specification  JF5028-00
Product Specification JF5028-00

... and/or +/-5% frequency, or load variations from no load to full load. A combination variation of line, plus load, plus temperature will allow for +/-1% regulation. V. Transient Response and Recovery A. +/-5% maximum of Vdc voltage setting maintained with step load changes from 20% to 100% load with ...
AP3171 N E W P R O D U C T Description Features Pin
AP3171 N E W P R O D U C T Description Features Pin

... configuration to backwards compatible to the existing devices that are not compatible to Qualcomm QC 2.0. ...
A Review on Performance Analysis of Matrix Converter
A Review on Performance Analysis of Matrix Converter

... Promising Characteristics of MC [7-13] makes it very popular among researchers and industrialist. The positive characteristics of MC are: 1) High power density 2) Bidirectional power flow 3) Sinusoidal input and output waveforms 4) Reduced volume and weight 5) Operation with unity power factor 6) Lo ...
Print this article - Elektronika ir Elektrotechnika
Print this article - Elektronika ir Elektrotechnika

... adjusted simply and reliably. In isolated remote areas, for small application, it is quite difficult to supply the lowquality power necessary from the low-voltage power distribution grid. In these cases, the electric power may be produced with low cost and easily controllable generation system. For ...
Godoy, P.A., S. Chung, T.W. Barton, D.J. Perreault, and J.L. Dawson, “A 2.5 GHz Asymmetric Multilevel Outphasing PA in 65 nm CMOS,” 2011 IEEE Topical Conference on Power Amplifiers for Wireless and Radio Applications , pp. 57-60, Jan. 2011.
Godoy, P.A., S. Chung, T.W. Barton, D.J. Perreault, and J.L. Dawson, “A 2.5 GHz Asymmetric Multilevel Outphasing PA in 65 nm CMOS,” 2011 IEEE Topical Conference on Power Amplifiers for Wireless and Radio Applications , pp. 57-60, Jan. 2011.

... PAPR of 6.1dB. The testbench is shown in Fig. 9. The digital baseband data generation and associated signal processing were performed in MATLAB and uploaded into the internal RAM of an FPGA. The baseband amplitude data was fed from the FPGA to the PA supply modulator shown in Fig. 5. To implement th ...
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DRP024V060W1AZ Datasheet

EE 101 Lab 1 Batteries, Power Supplies, and Resistors
EE 101 Lab 1 Batteries, Power Supplies, and Resistors

... current. A battery produces direct current (DC), since the chemical reaction in the battery causes current to flow in only one direction through the circuit. The measurement unit for electrical current is called the ampere, or simply the amp, and is abbreviated with a capital-A. The electrical poten ...
Gigabit Ethernet – IEEE 802
Gigabit Ethernet – IEEE 802

... Figure 6. Plot of the differential input, resulting signal, and modulated current [2]. ...
HV3613741380
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... to the negative terminal of the dc-link voltage to avoid the requirement of the fourth leg in the voltage source inverter (VSI) of the shunt active filter. The average switching frequency of the switches in the VSI also reduces; consequently the switching losses in the inverters reduce. The main aim ...
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A 800μW 1GHz Charge Pump Based Phase

... output signal. Nowadays, consumer electronics application areas of PLL are very wide. They work in all devices where a clock generation unit (CGU) is required, however their architecture depends on application. For this work the most important point is the frequency multiplication. In applications r ...
74VHC27 Triple 3
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... NOR Gate fabricated with silicon gate CMOS technology. It achieves the high-speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. The internal circuit is composed of 3 stages including buffer output, which provide high noise immunity and stable ...
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... Power management for photovoltaic systems of more than 100 kWp From January 2009 onward, photovoltaic systems in Germany, with outputs of more than 100 kWp, must have the option of being reduced in their supplied effective power by their power companies (§ 6.1 EEG). In practice, this is accomplished ...
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LSU SaturChem Electronics Gauntlet

... C = Q/V (capacitance descries how much charge you can hold in the device—it’s capacity!—for each volt applied) V = L (di/dt) (voltages build up when the current changes—one reason it is hard to make faster and faster computers). ...
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52395 - Honeywell Power Products
52395 - Honeywell Power Products

... Two (2) or more HPACM4 or HPACM8 units can be connected together as follows; Connect the FACP relay C and NC terminals from the 1st unit to the “FIRE INPUT” of the 2nd unit (not polarity sensitive) and remove jumper JR of the 1st unit. If a 3rd HPACM4 or HPACM8 is used, JR must be removed from 2nd u ...
New Products launched 2016
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... Super wide 6:1 input voltage range, 200‐1200VDC 4000VDC isolation Operating temperature of ‐25°C to +70°C Derating starting at 50°C The series dimensions are 3.5 x 2.5 x 0.98 inches (89 x 63.5 x 25 mm) OVP, OCP, SCP, Reversed connection protection Input Under voltage lockout ...
Analog and Digital Control of an Electronic Throttle
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175 NEW IMPROVED TECHNIQUE FOR MOS INTERFACE STATES
175 NEW IMPROVED TECHNIQUE FOR MOS INTERFACE STATES

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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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