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Amplification issues of differential amplifiers
Theoretically, the amplification factor should be 330 times. When 0.1A current flows through the sampling resistor R5, the output should be around 3.3V. Why is the output always around 4.7V when using
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New design approach improves smart meter performance
After the mature smart grid is built, smart meters will have the functions of automatic query and remote meter reading, and can also realize automatic power off. However, at present, domestic smart me
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How to view NPU clock power configuration and information for Allwinner V853 chip?
[KERNEL_DIR]/arch/arm/boot/dts/sun8iw21p1.dtsi ``` npu: npu@03050000 { compatible = "allwinner,npu"; reg = ; device_type = "npu"; dev_name = " npu"; interrupts =; clocks = clk_npu, clk_pll_npux4; cloc
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USB PD fast charging communication principle
[i=s]This post was last edited by qwqwqw2088 on 2021-6-25 09:59[/i]The charger circuit based on the PD protocol can keep the AC/DC part unchanged, but replace the QC protocol controller with a PD cont
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[National Technology N32G430] 3. Timer
[Purpose] Configure timer 6 as the system tick. Ideally, I would use the system systick, but I need a 1ms timer. Systick will need to use us delay in future projects, so I initialize tim6 to calculate
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