wireless signal sensor and alarm

Thread Starter


Joined May 4, 2017
wireless signal in general or internet signal can be monitorized by using wireless signal sensor and transistor circuit it's biasing depend on signal variation (that mean dynamic characteristics biasing),in this way transistor operating point switching between cut off and saturation or active region with assistant of signal variation ,at the output of transistor we use a buzzer to alarm us when signal is shut off.