Is there a chip solution with dual adjustable PWM frequency and duty cycle? Can it be controlled by two voltages, one to control the output frequency and the other to control the output PWM?...
1. Discover the problem Our school has an electronic reading room with 24 computers. We applied for ADSL to access the Internet. ADSL is said to be broadband, but since using ADSL, the Internet spee...
[i=s]This post was last edited by eric_bestmyself on 2018-12-29 11:28[/i] [color=#333333][font=微软雅黑, 微软雅黑, "][size=14px]I got a Xiaomi thermostatic kettle at EEWorld (very grateful) in June 2018. I wa...
[size=4]1. The filtering effect of capacitors[/size] [align=center][size=4] [/size][/align][size=4]That is, the larger the frequency f, the smaller the impedance Z of the capacitor. [/size] [size=4]Wh...