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I am trying to get the power cables for both Ac/dc input plugins

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On the inter net computer supples e spares.com

Posted on Apr 27, 2015

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Posted on Jan 02, 2017

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How i can solve this problem? My problem: my ups's output is constant by without ac input. But, ups's output is danceing or not proper by ac input.


check ac in inside UPS does it get converted to DC voltage inside UPS to charge the batteries. My guess of possible cause is Fault Capacitors on DC that filter the DC or a faulty power diode of a wheatstone bridge that is causing only half the AC cycle to be turned into DC. Check the power to the internal batteries is steady DC . Good luck in your troubleshooting

Apr 04, 2016 | Computers & Internet

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Need to know input, polarity and voltage to ensure I have the right adapter.


Complete Guide to Using the Correct Charger or Power ...

www.groovypost.com/.../choose-right-power-adapter-charger-phone-lap...
Jun 24, 2013 - If the device has a DC input of +12V / 5.4A, get an adapter that has a DC output of +12V / 5.4A. If you have a universal adapter, make sure it has the proper current rating ... Ideally, you'll have the same voltage, current and polarity on your ......or hdmi on my laptop .can you say what's the reason for the same.

How to select an AC to DC power adapter - ApogeeKits

www.apogeekits.com/power_adapter_selection.htm
An explanation of regulated versus un-regulated AC to DC voltage power adapters. ...voltage output power adapters and how to use this information to select the right one... Some (more expensive) DC voltage output power adapters have voltage ... Care should be take to ensure that the maximum input voltage of the load ...

AC/DC Power adapter ' Laptop Parts 101

www.laptopparts101.com > Laptop parts
Dec 26, 2008 - It's very important to use the right adapter for your laptop. ... Polarityon the new adapter's plug must be the same as on the original ... AC/DC power adapter voltage and amperage ..... I have purchased an non-hp dc-dc convertor (150W), 12Vinput, 19V output. .... So the cable component has to be replace.

Determining Proper A/C Polarity - Galen Carol Audio

www.gcaudio.com > Resources > How-To's

Jan 10, 2016 | Computers & Internet

1 Answer

WHAT ARE TRANSFORMERS


Wall socket power (high voltage) is known as AC (Alternating Current). Battery power (low voltage) is known as DC (Direct Current). Transformers are electrical converters that change AC input to DC output or DC input to AC output. This is required to charge or to supply mains power for most portable devices that use batteries when not plugged in, or devices that do not have batteries but still require DC power input. Examples of such devices are laptops, phones, tablets, printers, print servers etc. A transformer for your print server is most likely a black box in line with the power cable. In this case you will need a new power cable which will include the transformer. Some transformers are within the device itself with a power socket in the back of the device. If this is the case then replacement of the transformer (or sometimes the whole device) is required depending on the price of parts, sometimes replacing the whole device is cheaper.

Jan 15, 2014 | Lexmark N5 (12J0020) Print Server

1 Answer

AC adapter power connection LED blinks but not charging


This suggests to me that you need to check out the AC adapter, and see if there is an intermittent short. In otherwords a break in the wires.

AC adapter unplugged from laptop, and power, remove the AC power cord from the body of the AC adapter.

Use a multimeter set to OHM's, (1K), and connect the Positive (Red) probe lead to one of the flat bladed prongs, in the power plug that plugs into the surge protector.

Touch the Negative (Black) probe lead to one of the holes in the plug, that goes into the AC adapter 'body'.
Keep going from hole to hole, until you get a reading.
Now have an assistant gently wiggle the power cable, and see if you get an intermittent reading.

Do the same for the other plug's flat bladed prong.
Intermittent reading means replace the power cable, or if more feasible, the entire AC adapter.

Power cable proves to be fine, move on.
Plug the power cable back into the AC adapter. Plug the AC adapter into power.
Using a multimeter set to DC Voltage, touch the Positive (Red) probe lead of the multimeter, to the center hole of the plug that goes into the laptop.
(If just a symbol, the DC Voltage symbol is a dotted line over a solid line)

The Negative (Black) probe lead, touches the outside cylindrical metal shell, of the plug.
Have an assistant gently wiggle the cable, and see if there is an intermittent reading on the multimeter.
(Reading should be 18.5 Volts DC)

[There are Analog multimeters which have a scale, and a needle, and Digital multimeters that just have a digital readout.
If using an Analog multimeter the needle will drop towards 0.
If using a Digital multimeter the readout will drop to smaller numbers, or 0 ]

AC adapter checks out? Go on.

The port on your laptop where the AC adapter plugs in, is the DC Power Jack.
AC adapter unplugged from laptop, Battery removed.
Take a pencil, and gently use the eraser end to see if you can wiggle, the center pin of the DC Power Jack.

ANY perceptible movement means a problem with the DC Power Jack.
The GOOD news is that the DC Power Jack, is NOT soldered directly to the motherboard.

It slides down in a Channel on the outside edge of the Base Enclosure, and has a wiring harness coming from it.
The end of the wiring harness has a plug, that plugs into the motherboard.

The HP part number for this DC Power Harness is HP 600630-001

A) http://www.dectrader.com/600630-001-New-HP-DC-input-power-socket-connector-With-cable.html#.UD0_w6B0k9Q

B) http://www.ebay.com/itm/HP-Compaq-600630-001-DC-Power-Input-Jack-Cable-CQ42-G42-Notebook-Series-/180932154005?_trksid=p4340.m1850&_trkparms=aid%3D222002%26algo%3DSIC.FIT%26ao%3D1%26asc%3D11%26meid%3D1653940420718665976%26pid%3D100011%26prg%3D1005%26rk%3D1%26

This is a link to a free Service Manual from HP Support,

http://h10032.www1.hp.com/ctg/Manual/c02627955.pdf

Page 73 is for the Power Connector Cable.

No damage to the DC Power Jack, and the harness is not slightly unplugged?
Now you have real problems.

You have a bad Power MOSFET,

A) MOSFET:

http://en.wikipedia.org/wiki/MOSFET

B) Power MOSFET:

http://en.wikipedia.org/wiki/Power_MOSFET

C) http://mayohardware.blogspot.com/2010/04/important-parts-on-dv6000-and-dv9000.html

However it doesn't take a rocket scientist to replace. (Sorry Gort)
These SMD's use a J-lead contact. Simple unsoldering, and soldering.

(Better be fast though as you don't want to overheat a power transistor. Better be good, because you don't want any cold solder joints)

For additional questions please post in a Comment.
Regards,
joecoolvette

Aug 28, 2012 | HP Computers & Internet

1 Answer

I have a 2811 router with a PWR-2811-DC power supply in it. I have a PWR-2811-AC power supply that I would like to install in place of the DC input supply, but there is a second internal electrical...


No.
AC power is like a child's swing -- it goes from "neutral" to "positive" to "neutral" to "negative" to "neutral", and repeats.
DC power is like leaning into a strong wind -- as long as you keep leaning, you stay on your feet; stop leaning, and the force of the wind will blow you down.

So, you cannot substitute AC for DC power.

Mar 03, 2010 | Cisco 2811 Router

1 Answer

Our Laptop just keeps going off. Replaced the AC Adaptor, and still having the came problem.


Need more info, but if it powers and shows it is charging, then it is probably a heat issue. I would try taking a can of compressed air to the fans and air slots. try to get any dust out.

Otherwise, if it is not charging properly it may be the dc input, meaning either a dc input cable (about 20$) or a new mother board (a few hundred);

//halfs

Feb 14, 2010 | Toshiba Computers & Internet

1 Answer

Power supply/ no output voltage


Actually i haven't fixed the problem as yet but i did find some info that would help me to fix problem.
I went to google and entered keyword,,, Electronic parts,,there came up a page,,and i went to several manuf sites till i found a replacement transformer,,then i disassembled the power supply and am now waiting for a replacement transformer.

Sep 21, 2008 | Boston Acoustics MicroMedia Computer...

1 Answer

Need cable and power supply


Power Adapter Input AC 100-240V, 50-60Hz, Output DC 12V/4.0A

This may help. Just make sure you have the right dc output mentioned on the back of your monitor (12v4a or 12v5a) if any lower your monitor will shut off after displaying for few seconds then electrical smell will come out from your ac/dc adapter. When it overheats it shuts off.

http://www.alibaba.com/product-gs/51210391/TFT_AC_Adapter_for_12v_4a.html

Manual
http://www.princetongraphics.com/site/download/manuals/vl1716.pdf

Jun 14, 2008 | Princeton Digital VL1716 17" LCD Monitor

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