In this series are equipped with Automatic PSU so that Controller Device (Wi-fi/Modem) will automatically turn on as soon Jack USB Power injector is plugged into the USB socket CPU. Here I made 2 model series, the first to use both MOSFET and Bipolar Transistor regular use. I accidentally made two series so that those who have difficulty obtaining MOSFETs can make alternative circuit with components Bipolar transistors are more easily available in the market. Here's Development Series Block Diagram USB Power injector.
Automatic circuit Controller PSU put under so you had to make a USB Power Injector earlier versions do not need to change the settings at the top of the stabilizer. In addition to the system as it does not need extra cables to the top but just use a UTP cable that already exists.
Automatic circuit PSU Controller to USB Power injector MOSFET version:
Automatic circuit PSU Controller to USB Power injector for Bipolar Transistor version:
As for the components and the MOSFET transistors structure and its symbols and legs you can see the Data Sheet Components.
Data Sheet USB Components Injector
Foot structure component is a standard arrangement of the Data Sheet. Especially for C1815 Transistor foot structure, PN100, 2N3904 S8050 and you should re-check using AVO-meter arrangement because sometimes he does not conform Data Sheet.
With the additional circuit device (Wi-fi/Modem) lights / turn on automatically when Jeck USB Power Injector is plugged into the CPU socket and the USB device will automatically shut off when Jack is released so you do not need to manually turn on the device.
So hopefully the development of USB Power Injector helpful.
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