The load is an LED, the voltage is 5.5-7.5v, the current is 50mA. The power supply is a 3.7V-4.2V lithium battery. There is a button on the board, press it once to turn it on, press it again to turn i...
[size=4]PLL can be used to provide chip clock, which is controlled by PLLSTAT (PLL status register), which is controlled by the 9th bit and is used to read the connection bit of PLL. When the 8th bit ...
I am studying operational amplifiers recently. If a single power supply is used, there should be no negative half-cycle after the AC signal is input and amplified. However, why is there a negative hal...
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