Home Made Continuity Tester

Introduction: Home Made Continuity Tester

About: i'm a teacher who loves to encourage creativity

Hi there if you want to build a continuity tester to check potentially broken cables, you've come to the right place.

Supplies

- 1 Led/Buzzer.

- 1 1.5 volt battery(AA / AAA).

- Some cables.

Step 1: Building the Tester.

Connect up the led, and battery as shown in this circuit diagram.

If the Led/Buzzer does not work when you touch the two tabs together, the you should turn the Led around.

Be the First to Share

    Recommendations

    • Cheese Challenge

      Cheese Challenge
    • Back to School: Student Design Challenge

      Back to School: Student Design Challenge
    • Fandom Contest

      Fandom Contest

    Comments

    0
    Orngrimm
    Orngrimm

    Tip 2 years ago on Step 1

    If you are using a buzzer, please please add a flyback diode to it. Often, buzzers which run on DC are or the magnetic kind and generate very high voltagespikes in its sound-frequency. Those spikes can kill your electronics you are testing for contunuity.

    https://en.wikipedia.org/wiki/Flyback_diode