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The pa0rdt-Mini-Whip ©, an active receiving antenna
The pa0rdt-Mini-Whip ©, an active receiving antenna

... with respect to reception on shortwave. Local noise Before the antenna is dealt with, I want to focus on a key problem: local noise. When listening to weak signals in the longwave you always have to deal with noise. This noise can come from electrical equipment in the immediate vicinity. But it may ...
ELECTRICAL EQUIPMENT AND TERMINOLOGY Description
ELECTRICAL EQUIPMENT AND TERMINOLOGY Description

... This would be a great opportunity for a field trip to a job site in progress to show students electrical equipment and question their knowledge of some of the terminology. A field trip could be done to add to the activity, and/or add to other activities. It is also an opportunity for an electrician ...
S. Lim, D.M. Otten and D.J. Perreault, “AC-DC Power Factor Correction Architecture Suitable for High Frequency Operation,” IEEE Transactions on Power Electronics , (to appear).
S. Lim, D.M. Otten and D.J. Perreault, “AC-DC Power Factor Correction Architecture Suitable for High Frequency Operation,” IEEE Transactions on Power Electronics , (to appear).

9 Network Analysis
9 Network Analysis

... multiple unknown quantities. At least in a series-parallel combination circuit, there was a way to find total resistance and total voltage, leaving total current as a single unknown value to calculate (and then that current was used to satisfy previously unknown variables in the reduction process un ...
Parallel and Series Resistors, Kirchoff`s Law Introduction Objectives
Parallel and Series Resistors, Kirchoff`s Law Introduction Objectives

... Part Three: Combination of series and parallel resistors 1) Measure R1 , R2 , and R3 and record the values in the top of Table 5. (R1 = 560Ω, R2 = 1 kΩ, R3 = 470 Ω), then connect the circuit as shown in Figure 4. 2) Measure the equivalent resistance Req with the power supply disconnected. Record the ...
Energy spread and ion current measurements of several ion sources
Energy spread and ion current measurements of several ion sources

... wall thickness. An aluminum tube of the same dimensions was heliarced to th’e analyzer front plate at 45” so it could be aligned and attached easily to the lens track. The entire analyzer and lens assembly was mounted inside an &in.-diam by 22-in-long stainless steel tube with 10 in. UHV flanges on ...
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... For deep sub-micron CMOS, higher-order effects that were negligible have become significant, to the point of sometimes dominating over the firstorder effects. In the early days of SPICE modeling, it was assumed that most of the current flow was across a flat area, and that the effects of perimeters ...
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... Open Forum. This group is an open, voluntary association of companies that have worked to develop the IBIS standard in its present form. At the time of this writing, the group has managed to become part of the Electronics Industries Association and is working to get IBIS accepted as an EIA standard. ...
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t170 commercial thermostat

... • Failure to observe safety information and comply with instructions could result in PERSONAL INJURY, DEATH AND/OR PROPERTY DAMAGE. • To avoid electrical shock or damage to equipment, disconnect power before installing or servicing and use only wiring with insulation rated for full thermostat operat ...
Field Control RTD Input Module, IC670ALG620, GFK-1206
Field Control RTD Input Module, IC670ALG620, GFK-1206

... converter converts the differential measurement into a binary value (15 bits plus sign), which is read by the block’s microprocessor. The microprocessor sets the gain required in the analog/digital converter for each individual input. The gain is based on the RTD type that has been configured for th ...
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... value of a3 is caused by the nonplanar layer structure and the presence of two AB stacked layers in the bulk unit cell. The orthogonal lattice parameters a1 = 3.35 Å and a2 = 4.62 Å of the monolayer lattice, depicted in Figure 1b,c, are close to those of the bulk structure, as expected in view of th ...
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... supporting cell phone designs based on the Intel Mobile Communications (IMC) 61XX 3G platform. Designed to power all peripheral components in the platform, the ICs also provide the necessary signals to control the 61XX baseband processor. The integrated lithium-ion (Li+) charger is protected up to 2 ...
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... Semiconductor quantum wells are human-made quantum mechanical systems in which the energy levels can be designed and engineered to be of any value. Consequently, unipolar lasers based on intersubband transitions (electrons that make lasing transitions between subband levels within the conduction ban ...
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Voltage and vibration fluctuations in power transformers

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Performance of Relaying During Wide-area Stressed

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TB-1201F Antenna Amplification Techniques

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The development of a miniaturized hydration sensor

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LIGHTNING SURGE PROTECTOR FOR THREE

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... resistance is larger than when the switch was closed. As a result, the current decreases. ...
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Opto-isolator



In electronics, an opto-isolator, also called an optocoupler, photocoupler, or optical isolator, is a component that transfers electrical signals between two isolated circuits by using light. Opto-isolators prevent high voltages from affecting the system receiving the signal. Commercially available opto-isolators withstand input-to-output voltages up to 10 kV and voltage transients with speeds up to 10 kV/μs.A common type of opto-isolator consists of an LED and a phototransistor in the same opaque package. Other types of source-sensor combinations include LED-photodiode, LED-LASCR, and lamp-photoresistor pairs. Usually opto-isolators transfer digital (on-off) signals, but some techniques allow them to be used with analog signals.
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