OK!
I have the dimensions of the plug for the 3W adaptor (7.0V 0.5A ... this brings more questions.)
barrel diameter ø 4.8mm
pin diameter ø 1.5mm
barrel depth | 9.5mm
Apparently the 9W adaptor can be used to charge all Newtons... but its output is 7.5V 1.2A - the draw from an OMP is 7.0V 0.5A - half a volt could be enough to severely upset such machinery, can I get confirmation on this?
If the dimensions are the same I may have to add a switch and secondary resistor into the regulator circuit to switch between providing 7.0V (for OMP, 1x0 series) and 7.5V (for 2x00 and eMate) - unless of course it turns out that the 9W charger won't blow an OMP up, in which case my design is finalised.
Thanks again to macgreg for getting me an OMP to play around with and an original charger to test against.
I have the dimensions of the plug for the 3W adaptor (7.0V 0.5A ... this brings more questions.)
barrel diameter ø 4.8mm
pin diameter ø 1.5mm
barrel depth | 9.5mm
Apparently the 9W adaptor can be used to charge all Newtons... but its output is 7.5V 1.2A - the draw from an OMP is 7.0V 0.5A - half a volt could be enough to severely upset such machinery, can I get confirmation on this?
If the dimensions are the same I may have to add a switch and secondary resistor into the regulator circuit to switch between providing 7.0V (for OMP, 1x0 series) and 7.5V (for 2x00 and eMate) - unless of course it turns out that the 9W charger won't blow an OMP up, in which case my design is finalised.
Thanks again to macgreg for getting me an OMP to play around with and an original charger to test against.