USB 3.0 Speeds Up Performance on External Devices
The USB connector has been one of the greatest success stories in the history of computing, with more than 2 billion USB-connected devices sold to date. But in an age of terabyte hard drives, the once-cool throughput of 480 megabits per second that a USB 2.0 device can realistically provide just doesn't cut it any longer.
What is it? USB 3.0 (aka "SuperSpeed USB") promises to increase performance by a factor of 10, pushing the theoretical maximum throughput of the connector all the way up to 4.8 gigabits per second, or processing roughly the equivalent of an entire CD-R disc every second. USB 3.0 devices will use a slightly different connector, but USB 3.0 ports are expected to be backward-compatible with current USB plugs, and vice versa. USB 3.0 should also greatly enhance the power efficiency of USB devices, while increasing the juice (nearly one full amp, up from 0.1 amps) available to them. That means faster charging times for your iPod--and probably even more bizarre USB-connected gear like the toy rocket launchers a nd beverage coolers that have been festooning people's desks.
Wireless power transmission
is a technology that allows the transfer of electrical energy from a power source to a device or system without the need for physical wires or cables. It is based on the principle of electromagnetic induction or resonance, where energy is transmitted through electromagnetic fields.
The concept of wireless power transmission has been explored for several decades, and various methods have been developed to achieve efficient energy transfer over short to medium distances. One common approach is inductive coupling, where a primary coil connected to a power source generates an oscillating magnetic field. This field induces a current in a secondary coil present in the receiving device, thus transferring power wirelessly.
Resonant inductive coupling is another method used in wireless power transmission, which utilizes the concept of resonant circuits. Both the transmitter and receiver have resonant circuits tuned to the same frequency. When the transmitter is energized, it creates a resonating electromagnetic field that can transfer power to the receiver located within the field's range.
Wireless power transmission offers several advantages. It eliminates the need for physical connections, enabling convenience and flexibility in charging or powering devices. It can be particularly useful for charging mobile devices, electric vehicles, or even powering remote sensors or medical implants.
However, wireless power transmission also has limitations. The efficiency of energy transfer decreases with increasing distance, and the power received may be lower compared to direct-wired connections. There are also potential safety concerns, as electromagnetic fields generated during wireless power transmission may interfere with other electronic devices or pose health risks.
Overall, wireless power transmission technology has the potential to revolutionize the way we charge and power our devices, offering convenience and eliminating the clutter of cables. Ongoing research and development aim to improve efficiency, increase transmission distances, and address safety concerns to make wireless power transmission a practical and widespread solution in the future.
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