设为首页 - 加入收藏
您的当前位置:首页 >Remington Industries >MFR100FRF52-47R_Yageo 正文

MFR100FRF52-47R_Yageo

来源:LM317 Electronics Components编辑:Remington Industries时间:2021-06-14 03:51:59

At the end of the ramp, the coupling capacitor is charged to approximately one-half of the supply rail, and the digital PWM output can then be driven on the amplifier switch. PopGuard switch transistors may also be held in a high impedance state. The digital audio PWM signal may be simultaneously driven on the amplifier transistors, and the popguard switch. In this case the size of the popguard transistors combined with the series resistor permits the output node to be swamped by the amplifier switch.

7. Opportunity to optimize battery size. A DC distribution bus built around 3700A of DC current at -54.5VDC provides the opportunity to utilize new technology batteries that are designed to provide very high currents for short periods of time. Thus, the battery pack to support a 3700A cluster occupies approximately a 10 cubic foot area and provides approximately 0.5 minutes of holdup time at full load.

8. Reduced capital, installation and operating costs. DC distribution system components have been developed around telecommunications technology where a large number of cost competitive, mature alternatives are available. Analysis of industry standard centralized AC UPS costing versus the Distributed DC UPS technology described in this paper indicate capital and installation cost savings of up to 25%. Likewise, improved operating efficiency can provide savings in electrical power usage as high as 20%.

MFR100FRF52-47R_Yageo

9. Other opportunities for optimization. Localizing the bulk of power conversion heat load into a single cabinet provides other opportunities for cost management. Cooling moving air via HVAC equipment is generally a cost inefficient method. With most of the power losses in one cabinet, liquid cooling becomes a viable option. Likewise, as the ultimate challenge of cooling the data processing equipment is addressed, power conversion losses can be easily configured to latch on to similar cooling schemes (ducted air, circulating liquid, air-to-liquid heat exchange, and heat pipes).

Conclusion Ever increasing data processing power demands require a fresh look at how things are done and achieved total cost of ownership. DC UPS technology developed in the telecommunications industry provides a highly reliable, cost effective alternative to traditional AC UPS systems, especially when applied in a non-traditional, distributed manner.

About the author Gary Mulcahy is Executive Vice President of the Commercial Products Division of Transistor Devices, Inc. (TDI). He received his BE-EE from New York University followed by graduate study at the Polytechnic Institute of New York. Mr. Mulcahy is a recognized authority in power conversion technology and the design, development and production of power systems for maximum performance and reliability with minimal life cycle cost of ownership.

MFR100FRF52-47R_Yageo

Why be bound by hardwired, fixed-function, fixed-parameter analog circuits, when you can have the signal handling of the analog world combined with the flexibility of the programmable one? Or perhaps an analog-laden version of a system-on-chip?

Good questions, but they have complex answers, depending both on the definition of programmable as well as on the type of design effort and application priorities involved. The term programmable” can refer to basic fixed-function ICs like filters, which allow the user to set, via a resistor, jumper or dc signal, an operating point, bandwidth or other parameter. It also means devices with fixed functions but with one-time or reprogrammable software-settable parameters, which are retained internally after power-off. And finally, it means devices that can be set to establish the topology and interconnect, similar to an FPGA, and even be reconfigured in the field for maximum flexibility.

MFR100FRF52-47R_Yageo

Of course, configurable analog components are not the answer to every analog challenge. They offer advantages but also have limitations in performance, precision and speed that restrict them to the lower end of the spectrum and such applications as power circuits, motor control and sensor I/O. These, however, encompass a fairly big part of the analog application world, where 12 or 14 bits is sufficient.

Available programmable analog components range from small-scale devices such as the electrically programmable analog device (EPAD) MOSFETs from Advanced Linear Devices Inc., to complex, multifaceted topologies such as the PSoC family from Cypress Semiconductor Corp., with many waypoints in between.

Step 6–Reporting Once the patch is distributed, clients report their activities back to the central distribution server. The receiver and server logs and the update program (i.e., InstallShield setup.exe) capture information on the success or failure of delivery to each client. Users can produce overall reports on each patch distribution job by aggregating this information on a central site and parsing them into the desired reporting function. OmniCast users typically use scripting to accomplish this.

Streamlined, simultaneous patch distribution By using content distribution to push updates out to multiple endpoints, users can save a great deal of time and bandwidth, and the current update status can be centralized for management purposes. As we have seen, content distribution software is ideally suited for patch distribution because it was designed for guaranteed delivery of content to thousands of endpoints simultaneously, and it typically optimizes the bandwidth needed for the job on a location-specific basis to minimize impact on the WAN. In addition, content distribution software is highly automated, requiring only the IT time needed to queue up and start the distribution task. Finally, content distribution software offers full reporting and management to provide the visibility IT managers need into the patched status of machines throughout a distributed enterprise.

About the Author Steve Bannister ,, Vice President, Engineering at Stratacache, has over 15 years of experience in various networking software ventures, including engineering, strategy, sales, and marketing roles at Stratacache, Volera, and Novell, and as an entrepreneur. He also has significant experience in ERP consulting across many industries, and has served as a CIO in the manufacturing industry. He has attended the University of Illinois in Champaign, Illinois, and the Massachusetts Institute of Technology. He can be reached at:

Modern portable micro-systems like biomedical implants and ad-hoc wireless transceiver micro-sensors continue to integrate more functions into smaller devices, which result in low energy levels and short operational lives. Researchers and industry alike are therefore considering harvesting energy from the surrounding environment as a means of offsetting this energy deficit. The fact is, even with power efficient designs, low duty-cycle operation, smart power-aware network architectures, and batteries with improved energy density, the stored energy in micro-scale systems is simply not sufficient to sustain extended lifetimes [1]. What is more, the ubiquity of sensor nodes within a network and their limited accessibility prohibit the use of external energy supplies and the maintenance of micro-scale rechargeable batteries, creating the need for in situ long-lasting and self-renewable chip-compatible energy harvesting sources, in other words, self-sustaining and self-powered micro-scale system-in-package (SiP) solutions.

    1    2  3  4  5  6  7  8  9  10  11  
热门文章

    1.5374s , 10756.0859375 kb

    Copyright © 2016 Powered by MFR100FRF52-47R_Yageo,LM317 Electronics Components  

    sitemap

    Top