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Measuring Electric Phenomena: the Ammeter and Voltmeter
Measuring Electric Phenomena: the Ammeter and Voltmeter

... Table 1: The various schematic elements used in this lab. Resistance is measured in ohms, with the symbol Ω. In this lab, the resistance R will be constant for a given object. Later, we will investigate the limits of this relationship: under what conditions does it hold true, when does it fail, and ...
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... of the negative line, the lower the possible voltage read across the residual resistance over the connection. The First had a significant (greater than 15 ohm) value for the ground return and thus the leakage can develop a voltage, which interference is thus added to the signal path. Ordinary cable ...
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... The LT ®1251/LT1256 are 2-input, 1-output, 40MHz current feedback amplifiers with a linear control circuit that sets the amount each input contributes to the output. These parts make excellent electronically controlled variable gain amplifiers, filters, mixers and faders. The only external component ...
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The surge impedance loading or SIL of a transmission line is

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Solar Powered LED Street Lighting

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... improve efficiency, reduce component count, and eliminate the need for an external Schottky diode across the synchronous switch. The MAX1809 operates in a constant-off-time mode under all loads. A single resistor-programmable constant-off-time control sets switching frequencies up to 1MHz, allowing ...
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... Space Vector Modulation has been widely use in APF system. This method have an advantages over carrier based such as lower Total harmonics Distortion (THD), higher efficiency easier digital implementation and wider linear modulation range, [23]. It is shown that in the linear range modulation, the i ...
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Datasheet - Integrated Device Technology

... 3. The bus switch contributes no propagation delay other than the RC delay of the ON resistance of the switch and the load capacitance. The time constant for the switch alone is of the order of 0.25ns for CL = 50pF. Since this time constant is much smaller than the rise and fall times of typical dri ...
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... The 0.5" force sensitive resistor (FSR) is a quick way to measure pressure, and is very easy to setup. The FSR varies its resistance depending on how much pressure is applied to the sensing area. The greater the force, the lower the resistance. When measured with a multimeter, the sensor has a resis ...
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... Reduction of power consumption makes a device more reliable. The need for devices that consume a minimum amount of power was a major driving force behind the development of CMOS technologies. As a result, CMOS devices are best known for low power consumption. However, for minimizing the power requir ...
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... and V- present. As with Figures 8 and 9, either an Nchannel or a P-channel device will be off for any input voltage from -40V to +40V. The leakage current with negative overvoltages will immediately drop to a few nanoamps at +25°C. For positive overvoltages, that fault current will initially be 10µA ...
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Valve RF amplifier



A valve RF amplifier (UK and Aus.) or tube amplifier (U.S.), is a device for electrically amplifying the power of an electrical radio frequency signal.Low to medium power valve amplifiers for frequencies below the microwaves were largely replaced by solid state amplifiers during the 1960s and 1970s, initially for receivers and low power stages of transmitters, transmitter output stages switching to transistors somewhat later. Specially constructed valves are still in use for very high power transmitters, although rarely in new designs.
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