ATTENUATION MEASUREMENT
... bandwidth. Step attenuators are very accurate and have the following qualities: good reproduceability, low insertion loss, excellent impedance match, and wide operating bandwidth. But most step attenuators are interruptive when changing the attenuation value. 2.2.2.1. Continuously Variable Attenuato ...
... bandwidth. Step attenuators are very accurate and have the following qualities: good reproduceability, low insertion loss, excellent impedance match, and wide operating bandwidth. But most step attenuators are interruptive when changing the attenuation value. 2.2.2.1. Continuously Variable Attenuato ...
Complete
... sufficiently close to a boundary, this can be overcome. In addition, the air boundary layer greatly reduces friction compared to “crawling”, allowing higher speeds for the same propulsive force (a ...
... sufficiently close to a boundary, this can be overcome. In addition, the air boundary layer greatly reduces friction compared to “crawling”, allowing higher speeds for the same propulsive force (a ...
Quad-Core Intel® Xeon® Processor 5400 Series Datasheet
... The Quad-Core Intel® Xeon® Processor 5400 Series may contain design defects or errors known as errata which may cause the product to deviate from published specifications. Current characterized errata are available on request. 64-bit computing on Intel architecture requires a computer system with a ...
... The Quad-Core Intel® Xeon® Processor 5400 Series may contain design defects or errors known as errata which may cause the product to deviate from published specifications. Current characterized errata are available on request. 64-bit computing on Intel architecture requires a computer system with a ...
3-5 I/O Specifications
... ◊ Remove the dust-cover seals of modules after wiring, otherwise, fire, accidents, failure or fault might occur. ◊ Connect the ground terminal to the ground, otherwise, an erratic operation might occur. ◊ Periodically make sure the terminal screws and mounting screws are securely tightened. Operatio ...
... ◊ Remove the dust-cover seals of modules after wiring, otherwise, fire, accidents, failure or fault might occur. ◊ Connect the ground terminal to the ground, otherwise, an erratic operation might occur. ◊ Periodically make sure the terminal screws and mounting screws are securely tightened. Operatio ...
GEH-6195D, Speedtronic Mark V Turbine Control
... Mark V Turbine Control Application Manual GEH-6195F Issue Date: June 25, 1993 Revision A: July 21, 1993 Revision B: June 1994 Revision C: September 1997 Revision D: February 1998 Revision E: March 2003 Revision F: May 2003 ...
... Mark V Turbine Control Application Manual GEH-6195F Issue Date: June 25, 1993 Revision A: July 21, 1993 Revision B: June 1994 Revision C: September 1997 Revision D: February 1998 Revision E: March 2003 Revision F: May 2003 ...
Breakers, Relays, and Disconnects
... An overcurrent relay can also be set to monitor current and allow a specific value of current to exist for a specified amount of time before tripping. These are called time delay relays (also known as a 51). They can be set for either a short or long time delay depending on its application. Power pl ...
... An overcurrent relay can also be set to monitor current and allow a specific value of current to exist for a specified amount of time before tripping. These are called time delay relays (also known as a 51). They can be set for either a short or long time delay depending on its application. Power pl ...
Warrior™ ST, Warrior™ AXP
... Do not leave the machine unattended without first turning the key switch off (O), removing the key and securing the machine. Turn the key switch off (O) and remove the key, before changing the brushes, and before opening any access panels. Take precautions to prevent hair, jewelry, or loose clothing ...
... Do not leave the machine unattended without first turning the key switch off (O), removing the key and securing the machine. Turn the key switch off (O) and remove the key, before changing the brushes, and before opening any access panels. Take precautions to prevent hair, jewelry, or loose clothing ...
Large Dynamic Range Dynamically Biased Log-Domain
... the filter over a wide range of input currents are presented. With suitable dynamic biasing, the fabricated filter can maintain a THD < 40 dB and S/N > 53.7 dB for differential input current amplitudes ranging from 3 µA to 2.5 mA (a range of 58.4 dB). In terms of the range of signals that can be han ...
... the filter over a wide range of input currents are presented. With suitable dynamic biasing, the fabricated filter can maintain a THD < 40 dB and S/N > 53.7 dB for differential input current amplitudes ranging from 3 µA to 2.5 mA (a range of 58.4 dB). In terms of the range of signals that can be han ...
MAX6412UK34-T中文资料
... Threshold Overdrive graph in the TypicalOperating Characteristicsshows this relationship.://www.mianfeiwendang.com/doc/a29c7ebad2d87a9c1f77bad7ar The area below the curve of the graph is the region inwhich these devices typically do not generate a resetpulse. This graph was generated using a negativ ...
... Threshold Overdrive graph in the TypicalOperating Characteristicsshows this relationship.://www.mianfeiwendang.com/doc/a29c7ebad2d87a9c1f77bad7ar The area below the curve of the graph is the region inwhich these devices typically do not generate a resetpulse. This graph was generated using a negativ ...
MAX6361–MAX6364 SOT23, Low-Power µP Supervisory Circuits with Battery Backup General Description
... complexity and number of components required for power-supply monitoring and battery control functions in microprocessor (µP) systems. The circuits significantly improve system reliability and accuracy compared to that obtainable with separate ICs or discrete components. Their functions include µP r ...
... complexity and number of components required for power-supply monitoring and battery control functions in microprocessor (µP) systems. The circuits significantly improve system reliability and accuracy compared to that obtainable with separate ICs or discrete components. Their functions include µP r ...
Xilinx UG394 Spartan-6 FPGA Power Management User Guide
... high-performance chip-to-chip interface capability, and innovative power down modes are just a few of the problems solved by high-performance, low-power, and low-cost Spartan-6 FPGAs. ...
... high-performance chip-to-chip interface capability, and innovative power down modes are just a few of the problems solved by high-performance, low-power, and low-cost Spartan-6 FPGAs. ...
DS4012 - Batter Fly
... human health. In order to avoid release of such substances into the environment and harm to human health, we encourage you to recycle this product in an appropriate system that will ensure that most of the materials are reused or recycled appropriately. Please contact your local authorities for disp ...
... human health. In order to avoid release of such substances into the environment and harm to human health, we encourage you to recycle this product in an appropriate system that will ensure that most of the materials are reused or recycled appropriately. Please contact your local authorities for disp ...
8508A Users Manual Reference Multimeter
... Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is one year and begins on the date of shipment. Parts, product repairs, and services are warranted for 90 days. This warranty extends only to the original buyer or en ...
... Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is one year and begins on the date of shipment. Parts, product repairs, and services are warranted for 90 days. This warranty extends only to the original buyer or en ...
Switchmode Power Supply Handbook, Third Edition
... the United States Copyright Act of 1976, no part of this publication may be reproduced or distributed in any form or by any means, or stored in a database or retrieval system, without the prior written permission of the publisher. ISBN: 978-0-07-163972-9 MHID: 0-07-163972-1 The material in this eBoo ...
... the United States Copyright Act of 1976, no part of this publication may be reproduced or distributed in any form or by any means, or stored in a database or retrieval system, without the prior written permission of the publisher. ISBN: 978-0-07-163972-9 MHID: 0-07-163972-1 The material in this eBoo ...
Wiring Manual | 2011
... the Moeller name that is being preserved. Our range of services also benefits from the alliance. The Moeller name will continue to exist as a product series designation. Recognizing the values transferred to Eaton, “Moeller ®Series” appears on former Moeller products, while the packaging features the ...
... the Moeller name that is being preserved. Our range of services also benefits from the alliance. The Moeller name will continue to exist as a product series designation. Recognizing the values transferred to Eaton, “Moeller ®Series” appears on former Moeller products, while the packaging features the ...
MIL-HDBK-419A Grounding, Bonding, and Shielding
... This volume is one of a two-volume series which sets forth the grounding, bonding, and shielding applications for communications electronics (C-E) equipments and facilities. Grounding, bonding, and shielding are complex subjects about which in the past there has existed a good deal of misunderstandi ...
... This volume is one of a two-volume series which sets forth the grounding, bonding, and shielding applications for communications electronics (C-E) equipments and facilities. Grounding, bonding, and shielding are complex subjects about which in the past there has existed a good deal of misunderstandi ...
hps servicing guide - American Electric Lighting
... vapor and metal halide arc tubes are thin-walled tubes made of high-quality quartz. The ends of the tube are sealed by flame forming. This one-piece, press-fit construction assures greater uniformity between lamps and also holds and protects the thin leads of the electrodes. As the two ends of the a ...
... vapor and metal halide arc tubes are thin-walled tubes made of high-quality quartz. The ends of the tube are sealed by flame forming. This one-piece, press-fit construction assures greater uniformity between lamps and also holds and protects the thin leads of the electrodes. As the two ends of the a ...
Cadence OCEAN Reference
... Printed in the United States of America. Cadence Design Systems, Inc., 555 River Oaks Parkway, San Jose, CA 95134, USA Trademarks: Trademarks and service marks of Cadence Design Systems, Inc. (Cadence) contained in this document are attributed to Cadence with the appropriate symbol. For queries rega ...
... Printed in the United States of America. Cadence Design Systems, Inc., 555 River Oaks Parkway, San Jose, CA 95134, USA Trademarks: Trademarks and service marks of Cadence Design Systems, Inc. (Cadence) contained in this document are attributed to Cadence with the appropriate symbol. For queries rega ...
Published SFF Committee documentation may be purchased in hard copy or... SFF specifications are available at
... industry issues that are either not addressed by the standards process or need an immediate solution. Those companies which have agreed to support a specification are identified in the first pages of each SFF Specification. Industry consensus is not an essential requirement to publish an SFF Specifi ...
... industry issues that are either not addressed by the standards process or need an immediate solution. Those companies which have agreed to support a specification are identified in the first pages of each SFF Specification. Industry consensus is not an essential requirement to publish an SFF Specifi ...
Pulse-width modulation
Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being MPPT.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.