For service pack 1 machines

For service pack 2

For XP Service Pack 3

This is for IBM specific laptops, but does work with other brands.

IBM specific, but works with others.

Windows 2000 Service Pack 4

Overall view of PCB

Overview of final output stage.

Overview of input stage showing volume control

Overview of moving coil and moving magnet stages.

Overall View of MM Phono Stage

Output stage and PSU - you can see the 78xx regulators between the smoothing caps.

Detailed view of PSU

NAD 2200 bridging input board. I always intended to simulate this board in pspice, but somehow never got around to it - I might do it one of these days.

NAD 2200 power amp schematic - as can be seen, this is a \'class g\' design, which makes it interesting from a technical point of view. This gives the amp a dynamic power of 500w into a 4 ohm load!

The manual states the RMS power to be "more than 100 w" at 0.04% THD (8 ohms) and clipping power (at 1% THD) is quoted as 140w into 8 ohms and 200w into 4 ohms. In bridged mode (if the bridging circuit was still in place!) this would translate to 1kW into 4 ohms!

The output current is quoted as 50A (nominal) "peak short term current (1 msec).

Here is the copper side of the PCB for my preamp project.

Here is the silk screen (top) layer of the PCB.

Roku M1000 Specifications

200 Ways to recover a dying hard drive.

Continental Tyres Technical Databook 2010-2011