TechRepublic Resources
- Laptop Will Not Run On ac power When Battery Enabled
- Ok, so I got a new battery yesterday. It worked fine last night; charged up the battery, then I unplugged AC power and ran it purely on battery power to see how much life it had - right at 1 hour. Then I plugged AC cord back in,...
- Tags: Engineering, laptop computer, althaea@..., battery, AC Power
- Discussion threads 2007-07-07
- Constant beep during boot
- I have an HP Omnibook XE3 running Win98 and Phoenix BIOS. When booting from the battery, it beeps constantly without stop, pause, or change in tone. If I shut it off and restart, it boots just fine. If I boot from AC power, it boots just fine the 1st time....
- Tags: BIOS, Memory, opsdire@..., AC Power
- Discussion threads 2007-04-19
- Intriguing Laptop Power problem -an expert seeking help!
- hi guys, long time reader first time contributer! I consider myself pretty competant with PCs/Laptops etc but I am stumped for once! Also all shops/friends I have asked equally cannot explain the following problem:Compaq Presario 2500 aquired a few months ago. Works fine on AC power but once disconnected runs...
- Tags: laptop computer, jeff_medd@..., battery, AC Power, Compaq Computer Corp.
- Discussion threads 2007-03-28
- ac/dc powere
- I have a server rack.I have few server with AC POWER and few with DC power.can i provide AC &DC Power in the same rackYes it's possibleBut not recommended as it's safer to keep all the AC and DC stuff separate where possible to prevent damage when rushing through something.Col
- Tags: AC Power, lakshman.bijani@...
- Discussion threads 2007-02-17
- HD recovery/ using external drives in safe mode
- Hi all,Just to prove that when things are bad they can always get worse, the following happpend to my dell inspiron 600m:- The AC power jack broke loose off the motherboard due to an accidental yank of the power adapter cord. So no AC power gets to the machine...
- Tags: satyrcz@..., windows, hardware, safe mode, AC Power
- Discussion threads 2007-02-12
- 10 ways to protect systems from electrical catastrophes
- Are you confident that your systems are adequately protected from the types of calamities described in this article? Have you ever found out the hard way that they weren't?Beware of improper groundingBesure that all wall outlets are properly grou
- Tags: PSU, JodyGilbert, protection, 10 things, erik eckel, electrical, networking, computer equipment
- Discussion threads 2006-07-17
- Is DC the power to solve heat problems?
- Is DC the power to solve heat problems?article rootIs DC the power to solve heat problems?DC advocates argue that plugging servers into AC power is inefficient, and switching systems to DC would cut down on waste heat and component failure. The DC sales pitch puts the previously overlooked issues of...
- Tags: AC Power
- Discussion threads 2006-03-02
- Power draw of Servers
- I am trying to determine the power draw of each server I have and how to appropriate each server to UPS. I have been to the various websites of Dell and HP/Compaq and cannot find these important values of each server. They all list the power output and...
- Tags: AC Power, battery, gotTums?, hardware, server, United Parcel Service of America Inc., VA, watt
- Q&A 2005-02-09
Additional Resources
- compaq pres 1500 power up problem
- i have a compaq presarion 1500 WITH power on problems..I have been using it stationary..because if i tilted the lcd panel it would power off..it seems worse..now...the ac light comes on..but now when i puss the power button to fire it up..it powers down..i wait a couple of minutes..the ac...
- Tags: Monitors & displays, Notebooks, LCD
- Q&A 2004-12-04
- AC Vs. DC Power Distribution for Data Centers
- DC power distribution has been proposed as an alternative to AC power distribution in data centers, but misinformation and conflicting claims have confused the discussion. A detailed analysis and model show that many of the benefits commonly stated for DC distribution are unfounded or exaggerated. This paper explains why high...
- Tags: Distribution, Data Center, Data Centers, Storage, Hardware, Data Management
- White papers 2007-10-31
- help with a gateway
- Gateway Notebook mx6930 will not power up i have a gateway notebook that will not power up. when power cord is plugged in, no lights come up. battery will not charge. is there any way to open it up and check the power supply in thes notebook?Check the AC...
- Tags: Engineering, Notebooks, ecrain211@..., AC Adapter
- Discussion threads 2007-06-20
- A Quantitative Comparison of High Efficiency AC vs. DC Power Distribution for Data Centers
- This paper presents a detailed quantitative efficiency comparison between the most efficient DC and AC power distribution methods, including an analysis of the effects of power distribution efficiency on the cooling power requirement and on total electrical consumption. The latest high efficiency AC and DC power distribution architectures are shown...
- Tags: American Power Conversion Corp., Data Center, Efficiency, Data Centers, Storage, Hardware, Data Management
- White papers 2007-11-04
- AC Vs DC Power Distribution for Data Centers
- Various types of DC power distribution are examined as alternatives to AC distribution for data centers and network rooms. A detailed analysis and model show that many of the common benefits claimed for DC distribution are unfounded or overstated. The reasons why AC will likely remain the dominant choice for...
- Tags: Distribution, American Power Conversion Corp., Data Center, Network Room, Data Centers, Storage, Hardware, Data Management
- White papers 2005-07-05
- Powerless monitors
- I'd like to know if there are some monitors that do not use any power cables and run on only the system unit's female connector. Thanks..Not that I've seenMost monitors, LCD, plasma or CRT will draw a considerable amount of power, and can't get that from the data cables. ...
- Tags: Network technology, Monitors & displays, alpharay3@..., cable, monitor
- Discussion threads 2007-03-20
- COMPATABILITY
- CAN AC CURRENT AND DC CURRENT RUN TOGATHERYESDC and Ac can be sent/transmitted over one pair of wires, however filters must be used to seperate them for their individual uses. Most often, AC on top of a DC level is refered to as ripple and is undesirable. It's...
- Tags: bjaaron7317@...
- Discussion threads 2006-06-24
- I have a problem with my laptop
- I have a problem with my laptop. When I put the laptop under power energy, its monitor is working as it works under the battery(low light) and nothing is changing. I changed the battery but the situation is the same. Can you help me? What is wrong? The laptop is...
- Tags: Notebooks, kostaq_hila@..., laptop computer, battery
- Discussion threads 2007-03-21
- Avoiding AC Capacitor Failures in Large UPS Systems
- Most AC power capacitor failures experienced in large UPS systems are avoidable. Capacitor failures can give rise to UPS failure and can in some cases cause critical load drops on stand-alone and paralleled systems. AC capacitor failures have historically been ascribed to unavoidable random failure or supplier defect. However, recent...
- Tags: United Parcel Service Of America Inc., Capacitor, Failure, Telecom & Utilities
- White papers 2005-02-07
- UPS Technologies: Take Your Pick - What is a UPS?
- Electricity suppliers distribute what is known as alternating current (AC), at a voltage of 230 volts and a frequency of 50 Hertz. The only way of storing electricity, in a battery for example, is to convert the alternating current from the mains power supply into what is known as direct...
- Tags: United Parcel Service Of America Inc., Alternating Current
- White papers
- FLASHING LAPTOP SCREEN ON PLUGGING IN POWER CABLE
- Hi, I have a Dell Laptop , and it has been working intermitently, sometimes not coming on at all. Then we tried switching it on with out the power cabl and it came on fine. Then when we plugged in the power cable the LCD screen started flashing dull and...
- Tags: Notebooks, helenfindlay28@..., laptop computer, cable, Dell Computer Corp.
- Discussion threads 2007-08-03
- HP Pavilion
- I have an HP Pavilion zv6000 laptop that will no longer power up. There is no indicator light on when the ac adaptor is plugged in. While there was still some battery life it would power up but would shut down immediately if I plugged in the ac...
- Tags: Desktops, cdcuny@..., adaptor, HP Pavilion, Hewlett-Packard Co.
- Discussion threads 2007-09-19
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