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The Zune 80 was announced on October 2, 2007 and was released on November 13, 2007. [1] It, along with the Zune 4, 8, and 16, is part of the second generation of Zune devices. It features music, video, and podcast support, and comes with Wi-Fi and FM Radio. The Zune 120, part of the second generation of Zune devices, was released September 16 ...
The Zune Pad, which is a squircle, is the primary control mechanism for Zune 4, 8, 16, 80 and 120. The pad lets users of this device scroll through their song list with the use of their finger, then press the button to select tracks or change the volume. It was designed by Microsoft for the release of the second generation Zune.
Zune 80/120 and Zune 4/8/16 menu system. The Zune 4, 8, and 16 have gotten generally positive reception. Positives and negatives mimic those of the Zune 80 and 120, as the 4, 8, and 16 are very similar devices in a smaller package: the Wi-Fi, user interface, and excellent sound quality are praised. [1]
The Zune 30 comes with these items as well as a carrying bag, and the Zune 80 model has upgraded "Zune Premium" headphones. Accessories that were sold separately included, but are not limited to: Charging devices (car adapter, AC wall-socket adapters, external battery) I/O adapters (A/V composite, FM transmitters, headphones, USB data cable)
The Zune PC Software can be used for adding apps to the Zune HD. [15] The Windows Live Messenger app for the Zune HD was released on October 1, 2010, making Messenger available for all major mobile platforms. The email app was released for the Zune HD in April 2011 allowing users to sync with their email accounts and download folders and emails.
Other battery types use a timer to cut off when charging should be complete. Other battery types cannot withstand over-charging, becoming damaged (reduced capacity, reduced lifetime), over heating or even exploding. The charger may have temperature or voltage sensing circuits and a microprocessor controller to safely adjust the charging current ...
The functional requirement of the high voltage pre-charge circuit is to minimize the peak current out from the power source by slowing down the dV/dT of the input power voltage such that a new "pre-charge mode" is created. The inductive loads on the distribution system must be switched off during the pre-charge mode, due to the dI/dT dependency ...
The cut-off voltage is different from one battery to the other and it is highly dependent on the type of battery and the kind of service in which the battery is used. When testing the capacity of a NiMH or NiCd battery a cut-off voltage of 1.0 V per cell is normally used, whereas 0.9 V is normally used as the cut-off voltage of an alkaline cell ...