[ltp] T61 power connector (male part): where to get?

[Richard Neill]

Roman Haefeli wrote:
> hello
> 
> i just purchased a universal car-to-notebook dc-dc-converter, assuming,
> that it might provide a plug suitable to be plugged in into my t61,
> since i was confident, that thinkpads are quite common and considered
> 'standard' somehow. 

The plug design is deliberately incompatible, because the voltages are 
different. If your "universal" supply is a 15V rather than 20V one, it 
won't work properly.

You can get multi-voltage thinkpad supplies which run on mains or car 
voltages. Or, you can get cheap 12V to 240V boosters, which then plug 
your main TP adapter into.

Or, if you feel very brave, disassemble the product you bought and 
modify it. Most Switch-Mode power-supplies have the output voltage 
configured by a pair of resistors; the datasheet (alldatasheets.com) for 
the chip will tell you how to calculate it.

Richard


P.S. Does anyone know why the new supplies are higher voltage than the 
older ones? I thought that the newer CPUs ran on *lower* voltages.