Categorized by the materials, Printed Circuit Board can be divided into Flexible PCB, Rigid PCB,Flexible & rigid PCB, Aluminium PCB and etc. Rigid printed circuit boards use a solid, rigid substrate material like fiberglass that remains the board from twisting. Circuit Board Type,Circuit Board,Printed Circuit Board,Circuit Board Design Orilind Limited Company , https://www.orilind.com
The arrival of the new year, Apple iOS has a small situation. Some netizens reported that from the New Year's Day of 2013, Apple’s “Do Not Disturbance Model†failed and was not closed at the scheduled time, resulting in missed calls.
Ms. Niu encountered this problem. She told reporters that she set the iPhone 4 to be free of interruption time every day from 10:00 to 7:00 the next day. During this time, incoming calls and reminders were muted and appeared in the status bar. Moon icon. However, at 10 o'clock on the morning of January 1, Ms. Niu found that the "Moon" was still there, and the Do Not Disturb mode did not close automatically, and the phone did not come in. At first, it was thought that the mobile phone had a problem. Later, after seeing that some netizens reflected this problem, Ms. Niu simply turned it off.
Yesterday, Apple released a document explaining the Do Not Interruption Model BUG on the technical support page of its official website. It briefly introduced the situation and pointed out that the Do Not Disturb mode will return to normal on January 7, 2013, and reminds the user before You also need to manually turn the mode on and off. The Do Not Disturb mode is a new addition to Apple iOS 6 in September 2012. It is worth mentioning that Apple's mobile phone in the 2011 and 2012 New Year's Day had exposed the alarm failure.
Generally, the substrate in a flexible board is a flexible plastic. This fundamental material permits the board to fit into forms that inflexible boards cannot & to turn or shift during use without harmful the circuits on the printed Circuit Board.
Rigid flex boards merge technology from both flexible and rigid circuit boards. An easy rigid-flex boards comprises of a rigid circuit board that joints to a flex circuit board. These boards can be more compound if design requests demand.
There are many names for these products; Aluminum clad, aluminum base, Metal clad printed Circuit Board (MCPCB), Insulated Metal Substrate(IMS or IMPCB), Thermally conductive PCBs, etc- but they all mean the same thing and perform the same way-----A thin layer of thermally conductive but electrically insulating dielectric is laminated between a metal base and a copper foil. The copper foil is etched into the desired circuit pattern and the metal base draws heat away from this circuit through the thin dielectric.
