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An Improved Microwave Weed Killer
An Improved Microwave Weed Killer

... A spatially-incoherent field, providing uniform heating, can be generated in many different ways, such as moving the radiating antenna with respect to the target, using separate mode stirrers or using a number of independent, unsynchronized sources. Since a large amount of microwave power had to be ...
3 Abbreviations, Acronyms, AND definitions
3 Abbreviations, Acronyms, AND definitions

... more CPE are expected to be attached, i.e. KSU-less systems, the on-hook performance limits need to be scaled. See Annex A for an example of scaled calculations. ...


AlphaNet DSM3 Series DOCSIS® Status Monitor
AlphaNet DSM3 Series DOCSIS® Status Monitor

... Review the drawings and illustrations contained in this manual before proceeding. If there are any questions regarding the safe installation or operation of the system, contact Alpha Technologies or the nearest Alpha representative. Save this document for future reference. To reduce the risk of inju ...
AD7453 Pseudo Differential, 555 kSPS 12-Bit ADC in an 8
AD7453 Pseudo Differential, 555 kSPS 12-Bit ADC in an 8

... may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may aff ...
PDF
PDF

... the modulator, electro-optic frequency shifts were expected to be half of a fully doped microdisk modulator (~11GHz/V) [2]. Indeed, the ARM modulator electro-optic frequency shift is determined to be ~5.5GHz/V (Fig. 2 (d)). The electro-optic frequency shifts remained similar even after the ARM is tu ...
Percutaneous Penetration Enhancers
Percutaneous Penetration Enhancers

... limit of 1o-' 11g/cm2/h are indicated below the dashed line. (From Prausnitz, M. R. et al., Proc. Nat/. Acad. Sci. U.S.A., 90, 10504, 1993. With permission.) ...
Examensarbete utfört i Datorteknik av Fredrik Sandvik och Olle Tingstam LiTH-ISY-EX--15/4891--SE Linköping 2015
Examensarbete utfört i Datorteknik av Fredrik Sandvik och Olle Tingstam LiTH-ISY-EX--15/4891--SE Linköping 2015

... The goal of the thesis is to investigate and propose a new design for a contactor platform, both in terms of hardware and embedded software, which incorporates support to implement new state-of-the-art functions. The platform must support a wide range of contactors from basic ones with only core fun ...
Noise - nptel
Noise - nptel

... receiver. Various mathematical models exist to depict different noise processes that originate in the receiver and affect the transmitted signal. We will consider a simple additive noise model wherein an ‘equivalent noise source’ will be assumed ahead of a ‘noise-less receiver’ [n(t) in Fig. 4.17.1] ...
No.17 Single-transistor Reflex Radio
No.17 Single-transistor Reflex Radio

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PDF

... The secondary circuit of the transformer is earth grounded thru a ferrite bead. The ferrite bead (L1) is necessary to prevent common mode noise coupled to the chassis ground via the FETs and grounded heatsinks from coupling into the control circuit. A half-bridge rectifier (D2,D3) and capacitors (C1 ...
DC Shunt Motors - PSSurvival.com
DC Shunt Motors - PSSurvival.com

... When the shunt motor reaches full rpm, its speed will remain fairly constant. The reason the speed remains constant is due to the load characteristics of the armature and shunt coil. You should remember that the speed of a series motor could not be controlled since it was totally dependent on the si ...
Using Zero-Power CPLDs to Substantially Lower Power
Using Zero-Power CPLDs to Substantially Lower Power

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STM6717

... The STM6717/18/19/20 and STM6777/78/79/80 supervisors are a family of low voltage/low supply current processor (Micro or DSP) supervisors, designed to monitor two (or three) system power supply voltages. They are targeted at applications such as Set-Top Boxes (STBs), portable, battery-powered system ...
The Output Signal-to-Noise Ratio of a Nd:YLF Regenerative Amplifier
The Output Signal-to-Noise Ratio of a Nd:YLF Regenerative Amplifier

... pulse from the regen output. The pulse is attenuated and sent to a photodetector, and the peak voltage of the detector is measured and recorded as the regen signal. The Pockels cell transmission window is then moved in time by 13 ns, which is half the regen round-trip time, in order to measure the i ...
— FAN54047 FAN54040 USB-OTG, 1.55 A, Li-Ion Switching Charger with Power
— FAN54047 FAN54040 USB-OTG, 1.55 A, Li-Ion Switching Charger with Power

... path circuit, which disconnects the battery from the system rail, ensuring that the system can power up quickly following a VBUS connection. The power path circuit ensures that the system rail stays up when the charger is plugged in, even if the battery is dead or shorted. The charging parameters an ...
Category 4
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... the Utility electric system that is both safe and reliable. This document has been filed with the Michigan Public Service Commission (MPSC) and complies with rules established for the interconnection of parallel generation to the Utility electric system in the MPSC Order in Case No. U-15787. The ter ...
TJA1041A
TJA1041A

... 7.1.5 Sleep mode The Sleep mode is the second-level power saving mode of the transceiver. Sleep mode is entered via the Go-to-sleep command mode, and also when the undervoltage detection time on either VCC or VI/O elapses before that voltage level has recovered. In Sleep mode the transceiver still b ...
SiC Power Device
SiC Power Device

FCL - UFTO Home Page
FCL - UFTO Home Page

... state fault current. These advantages are achieved by employing three phase saturated core fault current limiters with the saturating current provided by a single high efficiency, high current density DC superconducting coil. These superconducting fault current limiters (SCFCL) are still passive dev ...
HMC547LP3
HMC547LP3

... the switch offers high isolation and low insertion loss. The switch features >50 dB isolation up to 5 GHz and >45 dB isolation up to 15 GHz. The ...
Guitar Amp Mods - Newton`s Files and Stuff
Guitar Amp Mods - Newton`s Files and Stuff

... when the guitar is turned down. Use something closer to a 1K input grid resistor and it does. At high gain you can hear the thermal noise produced by the guitar volume control, which for a 250K control is 125K/2 or 67.5K max, can't do much about that but at least make it so the noise goes away when ...
Features Electric Stopper Cylinder/LEBH
Features Electric Stopper Cylinder/LEBH

A Bitter magnet has the potential to be a very efficient insert for the
A Bitter magnet has the potential to be a very efficient insert for the

Electricity Market Grid Regulation
Electricity Market Grid Regulation

... 105. Positive component: In an instable electricity system, vector of first phase of the component having positive phase sequence among positive, negative, and null components which states instability in current or voltage phases, 106. Positive phase sequence: In an instable electricity system, stab ...
< 1 ... 162 163 164 165 166 167 168 169 170 ... 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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