Friday, November 11, 2011

Too many cars in Singapore


I mean, look at how crowded this carpark is!

Wednesday, November 9, 2011

It's a black world


Black laptop bottom, black laptop sleeve, black phone, black PSP, black calculator, black camera pouch with a black camera inside, black wallet, black mouse, black keyboard, black pencil case, black cables, black power adapter, black speakers, black USB hub, black monitor base (the monitor itself is dark purple, well mostly black), even the memory cards at the bottom right are black.

Remember the time when everything was beige? Well now's the black age.

Wednesday, November 2, 2011

Why the basic CMoy's simple resister divider virtual ground is not a good idea

I was thinking about why the simple resister divider virtual ground in a simple CMoy is inferior to active solutions, say, an active rail-splitter or a buffered resister divider. The usual answer would be "drifting of the virtual ground voltage as the amplifier pushes current into the load", or (over)simply said, "uneven splitting".

But, how much?