Two - way trigger diode, also known as two - end ac device (DIAC), and two - way thyristor at the same time.Because of its simple structure and low price, it is often used to trigger the bidirectional thyristor, and can also constitute overvoltage protection circuits.Construction, symbol and equivalent circuit of a bidirectional trigger diode.
Also commonly used in the overvoltage protection, timing, shift equal circuit, Figure 2 is the overvoltage protection circuit composed of bidirectional trigger diode and bidirectional thyristor.When the transient voltage exceeds the DIAC and Ubo, the DIAC quickly conducts and triggers the bidirectional thyristor to also conduct, so that the following load is protected from overvoltage damage.
DO-35,DIACS,DO-35 Diode,DO-35 package,Small Signal Diode Changzhou Changyuan Electronic Co., Ltd. , https://www.cydiode.com
Di special beautiful X5, Xi6 quad-core RK3128 chip Android BUG perfect version Brush Pack tutorial and firmware:
Different boxes have different firmware, some of the quad-core boxes in the market are 3128 chips, (the one with the most prominent in the middle of the box is labeled with rk3128) Theoretically speaking, the provided firmware is applicable to all boxes of rk3128 chips. , confirm whether the box is not 3128 does not have to disassemble, after entering YunOS, system information shows R31 or R312X or XX28 are RK3128 chip, do not know what chip to find the original package (official website download) directly brush Andrews Package, can not open to brush back to the original package, line brush is not afraid to become brick! !
April 1 released RK3128 chip Andrews the most smooth perfect new firmware features:
The new DIY design of the boot screen and Di beautiful special logo, the most cool boot animation, speed 20 seconds boot, speed 2 seconds off. The most fashionable desktop, through the streamlining of useless software, joined the most commonly used live TV software (can be uninstalled and installed, will not be deleted, and can carry out a key ROOT, is the most complete 3128 chip function, the fastest, the most screen Exquisite and smooth firmware, speed is the fastest model in the 4-core machine after flashing, worth everyone's possession,
Desktop picture introduction:
1, the most beautiful boot screen, new DIY fashion design 
9, the best application of a key directly, press 1 button to directly open the live 
11, a key ROOT function, with the remote control mouse click 
[RK3128 chip] Di beautiful special X5/Xi6 Android streamlined ROOT no BUG firmware
Recently, the new Doutomo special X5 machine has anti-brush Android design, the next day after brushing Android firmware can not boot into the desktop, for other Android firmware is the same, there is now a Andrews firmware brush machine, this will not happen, You can change the firmware below the perfect version. This firmware is 1g memory, the desktop is simple and beautiful, very fast, no card to watch live, 3128 can perfectly use this Android software. 2, the most cool boot animation, fast boot speed shutdown. 3. The most fashionable desktop, live broadcast software can be placed on the desktop 4, the fastest TV broadcast software, the second change Taiwan not card screen 5, the most abundant film and television variety show, full of massive video 6, the most complete video software, any installation can be uninstalled 7 can freely change the wallpaper, freely change the desktop theme 8, the most comprehensive set-top box function, can be set freely 10. Rich in functions, can be used to control children's use 10, the strongest memory space, ash recovery machine 1G memory 16G flash memory
Download address: http://bbs.shafa.com/thread-1287285-1-1.html
Quad-core RK3128 chip brush Andrews smoothest perfect version Brush Pack March 31 new release, this version is the fastest firmware 3128 chip, brush color vivid, smooth live broadcast card screen, free to download any TV broadcast software after a permanent If it exists, it will not be deleted, and the indicator light is normal after the flashing, the remote control is normal, and the wireless wired Internet access is all normal. Very smooth Brush installation package, Brush is very simple, follow the steps below will be successful step by step. If you do not succeed more than a few times the brush will be successful. Brush machine is not afraid to become brick, unsuccessful can be more than a few brush will be successful, if the brush machine can not be opened after the brush back to the original brush machine package to restore. 3128 core latest 2016 X5, Xi6 Android 1G without BUG perfect firmware download
Download address: http://bbs.shafa.com/thread-1287285-1-1.html
Specific brushing method and tutorial please see: http://bbs.shafa.com/thread-342149-1-1.html
Wish: Everyone has successfully brushed the machine successfully through their own efforts, and is a brush machine!