This article is reprinted from the public account: Will’s Canteen Author: A Chef Who Codes A spectrum analyzer is a commonly used test and measurement instrument in the research, testing, and maintenance of wireless communication systems. It can perform frequency domain measurements, time domain measurements, and even vector signal analysis. If you are engaged in … Read more
Wireless remote control modules are widely used in remote switches, vehicle unlocking, garage door control, access control systems, and other fields. A set of remote control receiving devices consists of a transmitting part and a receiving part. The transmitter encodes the control button pressed by the user into a radio frequency signal and then transmits … Read more
315M Transmission Circuit Principles In a static state, 12V provides voltage to the collector of Q2 through L1, R1, and the base-emitter of Q1. When data arrives, Q2 turns on, causing the emitter of Q1 to be at 0 potential, which means Q1 is initially off. When the emitter of Q1 is at 0 potential, … Read more