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LMV232 Dual-Channel Integrated Mean Square Power Detector for
LMV232 Dual-Channel Integrated Mean Square Power Detector for

... The LMV232 conversion gain and bandwidth are configured by a resistor and a capacitor. Resistor R1 sets the conversion gain from RFIN to the output voltage. A higher resistor value will result in a higher conversion gain. The maximum dynamic range is achieved when the resistor value is as high as po ...
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... Switched Mode Power Supplies (SMPS) produce a lot of 3rd harmonic - this is especially problematic in commercial buildings due to the vast number of computers, office equipment etc. ...
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... relationships are correct for a delta configuration, the voltage across two seriesconnected windings (ECA) is measured as shown in Figure 5-4 (a) to confirm that it equals the voltage across either winding (EAB and EBC). The third winding is then connected in series, and the voltage across the serie ...
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...  Each 2 x 2 x 2 node is a super-node  Each 2 x 2 x 2 super-node is a module  Full unit consists of 8 modules  Rigid frame constructed from PCBs  2’ length per edge is much reduced from original 5’  700W computer power supply  Buck converter 12V  5V Nate ...
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... to send 1 ms of 38.5 kHz FREQOUT harmonic, and then, immediately store the IR detector’s output in a variable. FREQOUT 8, 1, 38500 irDetectLeft = IN9 The IR detector’s output state when it sees no IR signal is high. When the IR detector sees the 38500 Hz harmonic reflected by an object, its output i ...
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... Power Supply imply to electric motor actuator motion of Omni-drive systems for curved paths. We find that, theoretically, electric power supply designs systems can travel between points faster for certain component stress, output voltage drop and voltage regulation ...
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... The work presented here introduces a novel decentralized PCT estimator to perform fault-tolerant state estimation of electrical power system. Numerical results demonstrate the potential of this approach in failure detection, isolation and bad data restoring during state estimation. The capability of ...
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... inputs and outputs of the optocouplers. To obtain the maximum data transmission rate, both edges of the clock signal are being used to clock the data; if only one edge were used, the clock signal would need to be twice as fast. Propagation delay skew represents the uncertainty of where an edge might ...
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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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