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You're fine, provided that you picked diodes with a peak inverse voltage greater than the greatest power supply voltage you intend to use. You'll connect the cathodes of the two diodes together, and one anode to each power supply; therefore, one of the diodes will always be reverse-biased...

Xilinx has an excellent appnote about the use of decoupling capacitors. I understand your concern is for an analog circuit, but the theory of decoupling remains the same. A capacitor of a given value in a given package size is going to be most effective over a certain frequency range and a...

I currently use a Netgear 605 switch to connect my and my wife's PCs to our DSL modem/router. I've been really satisfied with its performance, so I'm inclined to purchase an identical one to accommodate our unexpectedly expanding networking needs, as such: (ok, for some reason, my ASCII art...

If you decide to roll your own, you should check out this datasheet from Linear which has some really good information on the characteristics of automotive electrical systems (page 12). It's also something to think about before you decide to trust your shiny new PS2 to a third-party power...

One useful website that no one has mentioned yet: FindChips Searches a couple dozen component distributors at once... very useful when looking for parts that are not too common as well as quickly cross-checking prices on common parts.

I've had my new system with a Chaintech SE6600G PCIe video card since December, but last week was the first time I've tried using the tv-out feature. Unfortunately, I can't get it to work using any interface other than composite. When the S-video output is connected to a TV, the NVIDIA driver...