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A Test Oscillator For Ham Radio - Electrical and Information
A Test Oscillator For Ham Radio - Electrical and Information

... showed that there was a significant difference between simulation results and measurements. Possible reasons for this are listed below: As, transmission lines were not included in the simulation they may have significant effect at the operating frequency by adding inductance therefore lowering the o ...
A2000 Multifunctional Power Meter
A2000 Multifunctional Power Meter

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... written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instruct ...
BD9137MUV
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... 5. Consideration on Permissible Dissipation and Heat Generation Since this IC functions with high efficiency without significant heat generation in most applications, no special consideration is needed on permissible dissipation or heat generation. In case of extreme conditions, however, including l ...
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... UT54ACS14UQAH Inverter devices. The UT22VP10C-20PCA PLA device, which has an output rating of 12.0mA, has the greatest number of fanouts at 24. Therefore the 80% derating criteria is met even when applying the greatest fanout load of 240uA to the lowest rated IC output of 6.4mA. ...
A.6 The MOS capacitor The MOS capacitor consists of a metal
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Harmonics in power systems
Harmonics in power systems

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1N456A Small Signal Diode

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Study and Simulation of Current Controlled PWM Inverters

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An Introduction to BJT
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Weston 4 Interim Relay Requirements

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... Q. The vehicle will start, but then dies. After waiting, it starts. What is wrong? A. The Ignitor III may have a “Low Voltage Problem.” If the voltage supplied to the red distributor wire is insufficient, the system may run for a period of time, and then shut down as the voltage drops due to engine ...
Two-Electrode Spark Gap Preamble
Two-Electrode Spark Gap Preamble

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... energized to heat the coils and drive out moisture, and the transformer will be filled with preheated filtered degassed insulating fluid. The core shall be manufactured from burrfree, grain-oriented silicon steel and shall be precisely stacked to eliminate gaps in the corner joints. The coil shall b ...
7810-13
7810-13

Harmonics in power systems
Harmonics in power systems

... In comparison with utility power supplies, the effects of harmonic voltages and harmonic currents are significantly more pronounced on generators (esp. stand-alone generators used a back-up or those on the ships or used in marine applications) due to their source impedance being typically three to f ...
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Evaluates: MAX44250 MAX44250 Evaluation Kit General Description Features
Evaluates: MAX44250 MAX44250 Evaluation Kit General Description Features

... (TIA), replace R1 with a 0Ω resistor and install a shunt on jumper JU2. The output voltage of the TIA is the input current multiplied by the feedback resistor: VOUT = (IIN + IBIAS) x R4 + VOS where R4 is installed as a 10kΩ resistor, IIN is defined as the input current source applied at the INAM PCB ...
EE3306_68HC11_Lab4 - Electrical and Computer Engineering
EE3306_68HC11_Lab4 - Electrical and Computer Engineering

... In this part, you will program the A/D converter to read inputs PE0 – PE3 and output the result to the LCD display. The 68HC11 A/D system is an 8 bit successive approximation converter with an input multiplexer. The A/D converter requires two reference voltages, VRL and VRH , and on the Axiom board, ...
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... To preserve the accuracy of the A/D converter, it is necessary that analog input pins have low AC impedance. Placing a capacitor with good high frequency characteristics at the input pin of the device can be effective: the capacitor should be as large as possible, ideally infinite. This capacitor co ...
EY-RU 365: Touch room operating unit, ecoUnit365
EY-RU 365: Touch room operating unit, ecoUnit365

... If the room operating units and the ecos controller have different power supplies, the power supply references (MM) must have the same potential (connect the MM terminal of the controller and the MM terminal of the room operating units). A voltage drop over the supply cable must not be below the pow ...
< 1 ... 904 905 906 907 908 909 910 911 912 ... 1974 >

Mains electricity



Mains electricity is the general-purpose alternating-current (AC) electric power supply. In the US, electric power is referred to by several names including household power, household electricity, house current, powerline, domestic power, wall power, line power, AC power, city power, street power, and grid power.The two principal properties of the electric power supply, voltage and frequency, differ between regions. A voltage of (nominally) 230 V and a frequency of 50 Hz is used in Europe, most of Asia, most of South America and Australia. In North America, the most common combination is 120 V and a frequency of 60 Hz. Other voltages exist, and some countries may have, for example, 230 V but 60 Hz. This is a concern to travelers, since portable appliances designed for one voltage and frequency combination may not operate or may be destroyed by another.The use of different plugs and sockets in different regions provides some protection from accidental use of appliances with incompatible voltage and frequency requirements.
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