AC Detector Circuit With Awesome Application




Introduction: AC Detector Circuit With Awesome Application

Hi. Today I am going to show you How To make AC detector.

Speaking about AC or alternating currents, it is far more dangerous than DC. It can easily kill you if the voltage is 220v or 110v city power.

Before touching any live wire always make sure no high voltage is available there.

So, how you can check it?

Let's See

Step 1: Watch the Video and Know the Important Information


Step 2: Circuit Diagram

Step 3: Gather All the Components and the Parts List

Parts List:

IC 4017:-

16 Pin IC Base

BC 547 Transistor:

100uf Capacitor:

1K Resistor:

1 LED:

Push Botton:

Varo Board

Step 4: Build the Circuit on the Varo Board and Test It

Step 5: IC 4017 Pin Out

Step 6: Use It & Stay Safe From High Voltage

Be the First to Share


    • Make it Glow Contest

      Make it Glow Contest
    • First Time Author Contest

      First Time Author Contest
    • PCB Challenge

      PCB Challenge

    5 Discussions


    1 year ago

    Check this out
    I have made a similar tutorial with all possible combinations


    2 years ago

    Not only an AC detector, it will react to any interference. The counter is of no use as it's never reset, any MOS gate would give the same result. Decades ago, leaving opened a MOS input drove to its destruction, inputs weren't protected as they're today. You can't rely on this fixture to detect mains. Another point is that alternative current isn't more dangereous for the same voltage, a contrario, because you can feel it, which isn't the case of continuous current. Continuous current makes an electrolisys of blood and produces bubbles in the veins driving to an emboly.


    2 years ago on Step 6

    How about some explanation on how this works? What happens with the circuit before its active and then when it is activated.


    Reply 2 years ago

    basicly it is a decade counter, everytime the chip sees a clock pulse the counter moves one up.

    since the clock is floating and connected to a length of wire, it reacts to garbage because and can start ossilating because of that.

    Tapping the antenna would also turn on the led as well.