Before the transformation, the gas dispatching system of Xiangtan Iron and Steel Group Corporation (hereinafter referred to as Xianggang) used obsolete instruments. As of now, 100 instruments installe
This paper introduces the principle and implementation of an AC motor soft starter using a graded AC-AC frequency conversion method, which can start the motor smoothly with high starting torque and sm
Recently, I was working on an application that needed to use the GPIO interrupt of CH554E. I configured the GPIO interrupt to be triggered by the falling edge of P1.5, and then entered the interrupt t
The WM signal is a digital signal with a fixed period and an indefinite duty cycle.If the counter of Timer_A works in the up-counting mode, the output adopts the output mode 7 (reset/set mode)to contr
Because the op amp is powered by a single power supply, a bias voltage VCM1 of tens of mV must be added (why?). I see that the classic differential amplifier circuits are all grounded? Also, I used a
LM4907 is an audio power amplifier designed for mobile phones and other portable communication devices. It can continuously transmit 1 W of average power to an 80 ohm load , powered by a 5VDC power su