Polarity Tester with Buzzer

Batterry terminal is positive or Negative Check=====https://bit.ly/2LUzMAn
Remote Control Tester========================https://bit.ly/30qE85f
In this article we will teach you how to connect a car battery | Polarity checker that will easily test the polarity of a DC source. Components needed and connection diagram is given below. Is is easy to test the polarity of a circuit’s point whether it is positive or negative. In this way you can avoid the problem of wrong connection. Polarity checker circuit is very easy, just follow the diagram while making it.

Видео Polarity Tester with Buzzer канала Robo projects