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Overview of the Interdisciplinary Microsystems Group
Overview of the Interdisciplinary Microsystems Group

... • There are several control issues that arise due to the second reservoir. – We want to use the charge pump as little as possible due to its inefficiency. • When the battery voltage is close to 1.2V, the capacitor will only have to power the controller for a short time while the converter charges th ...
TPS6513x Positive and Negative Output DC-DC
TPS6513x Positive and Negative Output DC-DC

... generating a positive output voltage up to 15 V and a negative output voltage down to –15 V with output currents in a 200-mA range in typical applications, depending on input voltage to output voltage ratio. With a total efficiency up to 85%, the device is ideal for portable battery-powered equipmen ...
1.5MHz, 1A, STEP DOWN DC-DC CONVERTER     ... Data Sheet  Features
1.5MHz, 1A, STEP DOWN DC-DC CONVERTER ... Data Sheet Features

BH76106HFV
BH76106HFV

... f=4.5MHz/100kHz(BH761xxHFV) f=6MHz/100kHz(BH76206HFV) f=4.5MHz/100kHz(BH761xxHFV) f=6MHz/100kHz(BH76206HFV) f=8.2MHz/100kHz(BH761xxHFV) f=12MHz/100kHz(BH76206HFV) f=19MHz/100kHz(BH761xxHFV) f=27MHz/100kHz(BH76206HFV) ...
461 grade a - Powerstar Inc
461 grade a - Powerstar Inc

Action PAK AP4382 ® DC Input, Bipolar Output,
Action PAK AP4382 ® DC Input, Bipolar Output,

... Isolation (Input to Output): 1500 VDC between input, output and power ...
High Voltage Products
High Voltage Products

... breakers. The main feature of dead-tank technology is that the interrupter unit is accommodated in an earthed metal housing. The dead-tank circuit breaker offers particular advantages if the protection design requires the use of several current transformers per pole assembly. For this purpose, Sieme ...
Up to 3 A step-down switching regulator
Up to 3 A step-down switching regulator

... Short-circuit current VIN = 24 V (IL_PK = IFOLD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Short-circuit current VIN = 43 V (IL_PK > IFOLD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Start up in short circuit condition. . . . . . . . . . . . . . . ...
II. differntial evolution for shepwm
II. differntial evolution for shepwm

... They exist at some multiple or fraction of the fundamental frequency. Harmonic pollution in static power converters is a serious problem. For example in many residential, commercial and office buildings the triplen harmonics create high neutral currents to the extent that they may start fires, altho ...
Proposed Changes to the WECC WT4 Generic Model for Type 4
Proposed Changes to the WECC WT4 Generic Model for Type 4

... documented in [2], which is a freely available report. A perusal of the simulation in [2] will show that a wide range of operating conditions have been simulated based on measured data from several vendors. The data used here (and in [2], [6], [7], [8]) was provide to EPRI under non-disclosure agree ...
Ch 18A – Direct Sensing
Ch 18A – Direct Sensing

... To ensure amplifier is not saturated, V   V + Therefore, at point P, V  V +  0  VIRTUAL EARTH If Vin is positive, current flows from input to output. I at V  is 0 since input impedance is . Therefore: The inverting amplifier inverts A0 the polarity of the output. Vout is  rad out of phase wi ...
Evaluation Board User Guide
Evaluation Board User Guide

LTC1318 - Single 5V RS232/RS422/AppleTalk
LTC1318 - Single 5V RS232/RS422/AppleTalk

... for connection to the DCE, or peripheral side of an interface link. It includes an on-board charge pump to generate a ±8V supply which allows true RS232 output swings. The charge pump requires only four external 0.1µF capacitors. The LTC1318 includes two RS232 drivers, a differential RS422 driver, a ...
1 - MTE - Meter Test Equipment
1 - MTE - Meter Test Equipment

International Journal of Electrical, Electronics and Computer
International Journal of Electrical, Electronics and Computer

ANN BASED DETECTION OF OS CONDITIONS IN POWER SYSTEM
ANN BASED DETECTION OF OS CONDITIONS IN POWER SYSTEM

... different fault events are assumed to occur. Within the transmission line L1 different three-phase faults on one of the line circuits were applied. A total of 108 short-circuit cases were simulated with the fault parameters being varied: • fault duration time (80, 100, 120 ms), • fault termination ( ...
The Iconoscope TV Camera at W6BM, Berkeley
The Iconoscope TV Camera at W6BM, Berkeley

... The camera body is fabricated of 3/4” plywood, easier for me to work with than an all-metal box which would also have easily provided the required RF shielding. Should I use more authentic (for the '30's) vacuum-tube electronics, or go solid-state? Solid-state won out, particularly for the video cir ...
Battery Powered Monitors: Good Idea or Not?
Battery Powered Monitors: Good Idea or Not?

... Battery powered monitors do not include circuitry for measuring the resistance of a disconnect switch.  The switch is a crucial part of the total conductance path through the battery and should be  monitored. If a multicell monitor bridges the disconnect switch, then it will be subjected to very hig ...
K8AK-PA 3-phase Asymmetry, Phase Sequence, Phase Loss Relay
K8AK-PA 3-phase Asymmetry, Phase Sequence, Phase Loss Relay

Robust damping of interarea oscillations with unified power
Robust damping of interarea oscillations with unified power

... the damping-control design task challenging. The design methodology should therefore aim at improving damping performance while ensuring the least interaction with other modes over the full range of system operating conditions. This type of control action has been sought by poleplacement and eigenva ...
- ibookfi.com
- ibookfi.com

PS1: Overcurrent Protection of a Substation Power Transformer
PS1: Overcurrent Protection of a Substation Power Transformer

TekConnect Adapters - Liberty Test Equipment
TekConnect Adapters - Liberty Test Equipment

... This interface delivers a more robust oscilloscope interface for next-generation products with multi-GHz analog bandwidths, overcoming many of the inherent bandwidth limitations of BNC-based interfaces. The TekConnect interface preserves a low voltage standing wave ratio (VSWR) 50 Ω environment as w ...
213Lab10-FaradaysLaw
213Lab10-FaradaysLaw

... Experiment: Faraday’s Law & the DC Motor Objective: To investigate electromagnetic induction and use it to build a simple DC motor. Equipment:  solenoid  connection wires  analog galvanometer  4-6 strong block  2 bar magnets  5V DC power supply (or battery) ...
p130_holman_poster
p130_holman_poster

...  Higher density, lower cost, and faster turn- ...
< 1 ... 830 831 832 833 834 835 836 837 838 ... 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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