Modern low voltage DC/DC converters have changed where the advantages of multiphase power conversion and point of load (POL) architectures can not be ignored. Point of load (POL) distributes the power via a high-voltage bus ( typ 12V) , and convert down to a lower voltage ( .6-3.3V) close to the point of use. This is similar to how power is delivered to your house. The voltage is sent over long distances at very high voltage and then converted down to 115v by a transformer close to your house. This reduces the power dissipation in the wire due to the wire resistance. High peak current demands also drives the move towards POL systems. Conventional POL solutions typical require two-stage conversion. The first conversion typically converts 12V input down to the rail voltage (typically 3.3V or 5V). The second POL converter produces the required output voltage (.6-2V). This approach reduces the system efficiency because each converter has power loss. Future POL converters will operate from any input voltage from 4.5V to 32V and will be more efficient since only one conversion will be required.
Archive for December, 2009
There are tons of gadgets and goodies for the engineer out there but what about ones for an Analog lover?
Steampunk Anything
Steampunk denotes works set in an era or world where steam power is still widely used and can include alternate history-style presentations of “the path not taken” of such technology as dirigibles, analog computers, or digital mechanical computers.
More Steampunk creations
Tunable Glasses
Josh Silver delivers his brilliantly simple solution for correcting vision at the lowest cost possible — adjustable, liquid-filled lenses. Although generally not available to the public, one could donate to his cause to make it available to impoverished areas.
Golden Slinky
Yes, that’s 14-carat gold . The original was invented by a Unites States Navy engineer and machined from high grade blue-black Swedish steel. This version is 14-carat gold plated brass core, great for spoiled children, conversation pieces, and snazzy physic experiments.
Best of all, it requires no batteries!
Multi-Tool Hammer
If you’re looking for something a little more practical then check this twist on the Swiss army knife.
The multi tool features 14 built-in utility tools including: Hammer Head, Nail Claw, Linesman Pliers, Regular Pliers, 1/4″ Slotted Screwdriver, 2-1/2″ Drop Point Blade, 1/8″ Slotted Screwdriver, #2 Phillips Screwdriver, 2″ Serrated Blade, Can Opener, Wire Cutters, Wire Stripper, Metal File and Key Ring. High quality precision built durable stainless steel construction with elegant polished hardwood handle insures comfort and sure positive grip.
