[i=s]This post was last edited by Shenzhen Xiaohua on 2021-9-2 15:30[/i]The wavelength of a 50 Hz electromagnetic wave is300,000,000 meters / 50 = 6,000,000 meters . Is it a single independent quantum
① Throughout life, we should have a grateful heart, no matter they are parents or friends, colleagues or forum members, familiar or unfamiliar people... In the past year, in life, work or spirit, when
When learning DSP development, I often feel that there are too many technical documents. Every book is useful and I want to read every book, but I don't know where to start. At this time, the principl
See a battery switching circuit, as shown below,
1. Q1 and Q2 are NMOS tubes, Q3, Q4 and Q5 are PMOS tubes, and D1 is a diode.
2. BAT1 and BAT2 are batteries. The capacity of BAT2 is larger than that