Non Contact Voltage Detector And AC Tester Circuit

Non Contact Voltage Detector And AC Tester Circuit

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Components Used In The Non Contact AC Line Detector Project
1. BC547 Transistor
2. Resistance 8.2M Ohm
3. Resistance 47K Ohm
4. Resistance 330 Ohm
5. LED
6. Battery Clip
7. 9 Volt Battery

Friends, in today's video we are going to make a Wireless Electricity Tester.
Friends, through this wireless AC tester, we can also test the wire installed inside the wall.
And can also check where a wire is cut from the middle
So friends let's start today's video without any delay
Friends, to make this project, first of all we will need an NPN transistor, then,
Here we use bc547 transistor, now we put this transistor in the clip,
Now friends, we use another transistor transistor.
Whose base pin we connect to the emitter pin of the previous transistor
After this take another transistor, we also connect its base pin to the emitter pin of the second transistor.
Now we take a resistance of 8.2M Ohm,
If you want, you can also take any other resistance of the value around it.
Now we connect this resistance to the collector pin of the first transistor.
And again we use another resistance whose value is 47K Ohm
We connect it to the collector pin of the second transistor.
Here we use another 330Ohm resistance
And we connect this resistance to the collector pin of the third transistor.
Now we take a led and we connect it to the negative pin of the LED with 330 ohm resistance
Friends, if you want here, you can also use Buzzer instead of LED.
Now friends, by folding these three points, connect them together.
So friends now I use 30 cm long copper wire.
I clean one side of this wire a bit through sandpaper
So that its polish gets absorbed because we cannot do shouldering due to the polish that is on it.
Now we wrap this wire over the screw driver and make the shape of a coil.
Friends, here you take a little thick wire, if you use very thin wire, then the shape of the coil will not be good.
Now friends, we connect one end of this coil to the base pin of the first transistor.
The coil which is installed here will act as an antenna.
Now we use a battery connector, we cut their wires a bit.
And we connect the black color wire to the emitter pin of the third transistor.
And we connect the Red Wire through the LED
So friends this is a very simple and small circuit and it has been made
Now we test it
For testing we use 9 volt battery
And we fix this clip on the battery
Friends, as soon as you take this circuit near the electric wire, this LED blinking will start.
And friends, you can see that we take the circuit a little further from near this wire.
Then the LED turns off, it means that there is some fault in the wire.
So friends, this point is a bit cut
And we also got to know its location through this tester.

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Now we repair it back
And after repairing we move the tester over it
So you can see that its Continuity comes till the end of the wire.
And if you take it near the bulb, then even there you see this LED glowing.
So friends, how did you like this video, do tell by commenting
And if you like my content then subscribe my channel
And also press the bell icon
You will get notification whenever I upload a new video.
So friends, that's all for today, meet with a new project in a new video.

so let's go guys good bye

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