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Non contact AC Line and Neutral Detector / Non Contact Voltage Tester DIY
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- Опубликовано: 10 июл 2017
- In this video, I have shown how to make a simple non-contact AC voltage detector on a breadboard which can easily detect live and neutral wire.
As this is a wireless AC tester so no part is connected with the AC line so it is very safe to use.
Components required for the noncontact tester:
1. BC547 NPN Transistor [3 nos]
2. Resistors [ 1M, 100K, 220ohm]
3. LED [1 no]
4. 9 volt Battery with connector
5. copper wire or strip [Alluminium Foil can also be used instead]
9. Breadboard
This is a very useful electronics DIY project as we all need an AC tester to detect live and neutral wire in the home.
I have also explained how this Wireless AC voltage tester works so that you can modify the circuit according to your requirement.
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Awsm!
Bro can we change any one value of transistor???
Well done😊👏👏
Thanks
I made this device but in my device's led glow very dim when kept nearer to the ac containing wire... I dont know why?? Can you explain what is the problem in device? And how to correct that mistake???
Hey connect a metal plate to the antenna📡 and it will work excellent👍👏😆
It really works I have also made
Can we use buzzer out of led
Yes.
If i want to add a buzzer do I put it in series with the LED and change the resistor OR do I need another Transistor and go paralel. Can you help
Hello, great video. Is there any way you can test voltage?
We can not measure the voltage with this. Only live wire can be identified.
Tech StudyCell thanks for reply. how would you test for presence of voltage?
Is it possible to increase detection range to 6cm on 240V wire by modifying the antenna? This is to trace a live wire that has been plastered over.
What will if I change One of the transistor's value in circuit can explain??
Why the resistors? Purpose?
I made this same project but it shows led glowing even it is brought near any wire without current. Why?
Please check for any loose connection or wrong polarity.
Same problem
Funny how there is ten circuits on this. Everybody claiming it's their idea.
Vai mana is project ko banaya lakin a diveice on karta hi led thora thora glow kar raha ha kiyu.
Due to contact of wires
fool, Line Tester is enough