This article via: Apple iPad postpones delivery of accessories for May
Apple iPad postpones delivery of accessories for May
This affects the keyboard dock and the USB Power Adpater. Originally, they should be available mid to late April. The protective case iPad appear about two weeks later than planned.
Business blogs: blog.com , multiply.com , vox.com , xanga.com , blog.dada.net , vgp-bpl8 battery , etc.
As Apple Insider reports, Apple shifts the publication of accessory products for the iPad. Way, the Keyboard Dock, a combination of a docking station for charging the tablets and a keyboard with special keys in standard size, only delivered in May. Originally it should be available in mid-April.
Even the 10-watt USB power adapter is now only in May, rather than appear as previously scheduled in late April. In addition, delaying the introduction of the iPad Case, a protective cover with reinforced side panels that can be used as a stand, to mid-April. It should iPad before the official sales launch in the U.S. on 3 Be available in April.
The planned delivery dates for the iPad iPad dock and the dock connector-to-VGA adapter, Apple has not changed. Both come on 3 April in the trade. Matching headphones with integrated remote control and microphone can now be ordered for delivery within 24 hours.
In the U.S., Apple has for the 12th March pre-orders for the iPad contrary. Estimated to have been received in the first six hours after the tickets go on sale starting approximately 91,000 orders on the first day and about 120,000 jobs for the Tablet PC. In this country to the end of April iPad come on the market.
Some accessories for the iPad, including the keyboard dock and the USB Power Adapter, appear later than originally planned (Image: Apple-VGP-BPS13 battery , VGP-BPS13A/B battery , VGP-BPS13A/S battery , VGP-BPS13/B battery , VGP-BPS13/S battery , etc.)
In recent years, aluminum and other non-metallic low-temperature characteristics of its light weight, high specific strength advantage, has been widely used in aerospace, automotive and civil industries, become an important processing material 〔4〕.
With the development of science and technology, sheet aluminum alloy in the industry used more and more widely, the welding capacity is continually expanding. Increase welding productivity, product quality, to achieve welding automation, intelligent manufacturing enterprises has been more attention to welding, particularly welding quality and higher precision robotic welding occasions especially. Combined with modern artificial intelligence technology, digital information processing, computer vision technology, the integration of high technology, also contributed to AC and DC welding technology is moving in high speed and efficiency of welding, welding control digital, intelligent control systems develop.
A principle and characteristics of AC and DC arc welding
The main features of AC and DC arc current zero-crossing time is very short, through the electronic control technology to power longer than the positive and negative half-wave and current ratio can be adjustable. Therefore, it is used for welding aluminum and its alloys, in the welding process has the following features: power stability, re-arc current zero crossing is easy, do not increase steady arc voltage pulse or high frequency, little effect of interference, and can be positive or negative half-wave power by adjusting the proportion of time to get the best penetration and cathode atomization, and improve the life of tungsten; adjust workpiece on the heat input, more efficient use of heat and arc arc used to meet a Masterpiece the special needs of some arc welding process, do not use the device to eliminate DC component and so on.
AC-DC inverter welding power source, mainly by ordinary inverter DC arc welding power source and the composition of the main circuit, through the inverter from the DC into AC, frequency adjustable, positive and negative half-wave power longer than the positive and negative half-wave current ratio can be adjusted freely within a certain range.
Business: HP Battery , Compaq Battery , hp pavilion zt3300 battery , hp pavilion zt3300 battery , hp pavilion zt3400 battery , etc.
