Diy Polarity and Continuity Tester

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Introduction: Diy Polarity and Continuity Tester

About: My name is Alen and i study electronic engineering. I love to make anything that needs electricity, hack and mod things as well building anything AWESOME...

This is my homemade polarity and continuity tester (max. 14 volts)
I used : 
2x Bright Leds
1x Resistor (depends on leds and voltage)
and some wires 
Circuit was made in multisim

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    3 Comments

    What you've built is a voltage checker with polarity indicator.
    A continuity checker (like for checking fuses out of the circuit) has its own battery and it needs no polarity indicator.

    What did you use for the body housing and probe?

    1 reply

    old pen

    Continuity tester is small battery