120W Universal ac to dc adaptor

[KenB]

Ivan, List,


Lidls are selling a universal laptop adaptor next week for £24.99 with plugs to fit the inputs on most popular laptops.

However I did spot this even more useful device for just £14.99

http://www.ultimateaddons.com/Universal_Chargers/Laptop_Chargers/120w_Universal_A/C_Laptop%20Adapter___795.htm?Features

It has switch selectable dc outputs for popular voltages

DC voltage selector 15v, 16v, 18v, 19v, 20v at 6A Max and  22v, 24v at 5A max.

The 15V output through a couple of big diodes or bridge rectifier would make a useful 12V battery charger.

These universal input devices will often run down to about 90V dc input, so would make a useful dc/dc converter for running low voltage dc equipment directly off the inverter battery.


Ken

[Twenty4Seven]

Ivan, List,

Lidls are selling a universal laptop adaptor next week for £24.99 with plugs to fit the inputs on most popular laptops.

The 15V output through a couple of big diodes or bridge rectifier would make a useful 12V battery charger.

Why the diodes on regulated DC? Is it to drop 1.4V or to protect against reverse polarity?

[KenB]

24/7

The diodes would be to drop the 15V down to about 13.8 for battery charging.

Nice picture of a CS head BTW.


Keep Smiling 


Ken