Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Task switch by
1) Interupt occur, most of RTOS using timer interrupt for schedule the task, when timer interrupt occur and others high priority task are ready to run it will make a task switch.
2) Calling OS API function, example call OSTimeDly currently running task will be block and kernel...
fan dimmer using 8051
We are call this method " Phase controller ", by you must have a reference signal from AC source 50Hz or 60Hz, the connect this signal to your microcontroller external interrupt pin for reference to make the phase control signal. Using the timer to on and off the control...
At first I think you got the wrong adapter and need to order the new, but you said you checked the NEC web already, found that there is no another adapter. Do you have an e-mail address of technical support engineer of NEC ? Try to contact them for ask the good way.