AC Adapter

Depends on the make/model of the laptop, and the voltage & power rating of the replacement power supply compared with the requirements of the laptop.

If the connector looks something like this: - and if the voltage rating of the new PSU is the same as the original, and the power rating (which will be written on the PSU as something like "100W") is the same or greater than the original, you should be OK.

Usual disclaimers. The laptop manufacturer has almost certainly made a statement like "Your equipment is not guaranteed to operate correctly if used with a power supply not approved or supplied by us". I concur.

The make is Toshiba's,model L505-S5990. The guarantee period is in fact expired. I m just curious to keep my laptop longer.

I appreciate your contribution. thanks.

As far as I can tell (from web searches) there is nothing 'fancy' about the power jack, so any replacement with the correct connector (5mm x 2.5mm), and rated at 19V and 75W (minimum) should do.

You most certainly can find a third party power supply that will safely power your Toshiba laptop. Toshiba though will only recommend their product for obvious reasons. The critical factors you must clarify is that the new supply has an identical plug that connects to you laptop as your old supply. You also must have an identical voltage rating from the new supply. The current or power rating of the supply must be at least as large as the old supply but it can be larger. A larger power or current supply will usually cost more, but this is your only attribute that need not be identical to the old supply.

Now there are many companies on the web that will gladly sell you a replacement power supplies. Many will allow you to search their inventory by referencing the laptop model, too.

The factor you need to find an AC Adapter that will work on your Lap Top are as follows:

1.) Match the manufacturer's type of AC Adapter output Voltage (AC or DC)

2.) Match the manufacturer's AC Adapter output Voltage.

3.) Match or more than the manufacturer's of AC Adapter output current.

4.) The plugs polarity if AC Adapter output Voltage is DC.

5.) The plug size and type.

I have very good luck with Radio Shack universal power supplies.

Best Luck.

BEN

Be sure that the new plug is the same polarity as the old, in addition to the same dimensions.

I recommend let your replaced charger be of same voltage rating in terms of output and same or less current rating for good charging.

I disagree with your comment. The OP was wanting to replace the original power supply.

If the power supply is not the same voltage with at least the same or greater current capacity. You will run the risk of damaging the laptop, and the charger itself. Most laptops have the battery charger control circuit built in. So the power supply MUST be able to supply the current needed to operate the laptop AND charge the battery/batteries (in some systems) at the same time. Other wise the power supply will either overheat, voltage drop or just not work (it all depends on its built in protection.)

Most newer laptop batteries are "smart" so they have to be charged in the unit. Trying to charge them outside of the unit may/will damage them if not done correctly.

Older batteries, If externally charged needs to be charged for the chemistry of the batteries. IE: lead acid, nickle metal, etc.

Yes, you can use longer time contestants (slower charge rates) which can extend the life of some types of batteries chemistry. So it becomes a trade off of speed verses over all life. So long as Not to over quick charge thus damaging the batteries.

To the OP, like it has been said there are companies that sell replacement supplies.

Thanks for sharing your knowledge.I heard of internal protection in cell-phones.Never thought of current setting inside it.Technology good or bad

Regards.

The fancy thing for laptops is now that a [3rdconnection] pin in centre senses for battery charging control.

Some makes have added the circuit in the adapter and others still have it in the battery / or laptop.

Do you getting this type of error:

Battery Assemblies have a sophisticated SW & HW built in:

http://www.engadget.com/2011/07/22/charlie-miller-finds-macbook-battery-security-hole-plans-to-fil/

http://blogs.forbes.com/andygreenberg/2011/07/22/apple-laptops-vulnerable-to-hack-that-kills-or-corrupts-batteries/

http://www.zdnet.com/blog/hardware/updatable-firmware-could-be-the-new-target-for-hackers/13943?alertspromo=&tag=nl.rSINGLE

An illustrated article I found on the web about repairing the DC jack of this model shows only red and black connected to the jack, so no 3^rd connection.

Regards.

But what you see if you have the model handy.

POster is to reply to confirm or otherwise please.

I still think it is. See if the DC-power input socket on Laptop & Plug on adapters is like this: Bigger size than the normal.

Out of these:

Careful not all Toshiba laptops use 19V a few are 25V

Regards;

I think there no laptop Toshiba or others using 24/25VDC output Adapter.

Most of laptops using 10V to 15V batteries and adapters 15V ≈ 19VDC

A list of Toshiba adapters in their stock is as under:

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Toshiba 30W Global AC Adapter for Mini Notebook NB205/NB255/NB305/NB505 series and USB Mobile LCD Monitor

Power: 100-240V/ 50-60Hz Frequency (Universal) Input voltage; DC 19V x 1.58A Output

BTI® 19V/30W Universal Notebook Auto AC Adapter for Mini Laptop

Toshiba Slimline 45W Global AC Adapter

Power: 100-240V/ 50-60Hz Frequency (Universal) Input voltage; DC 15V x 3A Output

Toshiba 45W Slimline Global AC Adapter

Power:

Input: 100-240V/ 50-60Hz Frequency (Universal)

Output: DC 19V ≈ 2.37A

Toshiba 60W Global AC Adapter 100-240V/ 50-60Hz Frequency (Universal) input voltage

Power: 15V x 4A output voltage; 100-240V/ 50-60Hz Frequency (Universal) input voltage

Toshiba 65-Watt Global AC Adapter

Power: 100-240V/ 50-60Hz Frequency (Universal) input voltage; 19V x 3.42A output voltage

Toshiba 75-Watt Global AC Adapter

Power: 100-240V/ 50-80Hz Frequency (Universal) input voltage; 15V x 5A output voltage

Toshiba 75-Watt Global AC Adapter

Power: 120V-240V/ 50-60Hz Frequency (Universal) input voltage, 19V x 3.95 A output

Toshiba 120-Watt Global AC Adapter

Power: 100-240V/ 50-60Hz frequency (universal) input voltage; 15V x 8A output

Toshiba 120-Watt Global AC Adapter

Power: 100-240V/ 50-60Hz Frequency (Universal) input voltage; 19V x 6.3A output

Toshiba 230 Watt Global AC Adapter

Power: 100-240V/ 50-60Hz Frequency (Universal) input voltage, 19V x 12.2A Output

Toshiba 90-Watt Global AC Adapter

Power: 100-240V/ 50-60Hz Frequency (Universal) input voltage; 15V x 6A output

Toshiba 120-Watt Global AC Adapter

Power: 120V-240V/ 50-60Hz Frequency (Universal) input voltage, 19V x 6.3A output

Toshiba 180-Watt Global AC Adapter

Power: 100-240V/ 50-60Hz Frequency (Universal) input voltage, 19V x 9.5A Output

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No question about it

Hello participants! Thanks for your contributions toward this topic;fortunately I found the exact match of my old AC adapter.