Homemade non contact voltage tester using BC547, Simple AC detector

Homemade non contact voltage tester ( Wireless AC line detector using BC547, Simple AC detector ).
This is a wireless AC line detector circuit using a bc574. This is a very good simple AC detector for your testing.
Components used in this project:-
1. BC547 Transistors x3
2. 3V Active Buzzer
3. 330 Ohm resistor
4. LED
#aclinetester
#wirelessaclinedetector
#electronic
#aclinedetector
#homemade101
#simpleacdetector
#noncontacttester
#noncontactdetector

[@mdirshadmdirshad8168]

👏👏 nice bro🎉

[@homemade_101]

thanks

[@Action16]

Nice work bro

[@homemade_101]

Thanks 🔥

[@Aaliyah21]

❤❤ super 🎉😊

[@homemade_101]

Welcome

[@Factboyking1717]

That is working

[@homemade_101]

yes this is good

[@ayoubgouchida2289]

if I use a 3V battery I can remove the resistance???

[@homemade_101]

220 ohm ok

[@blisca]

Does it works when voltage is present but no current is flowing?Thanks

[@homemade_101]

yes working

[@ricardoantoniomartealmonte7434]

a la verga eso si esta bueno, una herramienta para ver donde hay corriente viva como decimos aca.

[@homemade_101]

yes

[@alimuhammad5215]

What if I connect a 3V voltage source, what should I do?

[@homemade_101]

DC voltage. 3.7v battry or dc power supply

[@pavann-vv8uf]

Can you please tell me that on which principle does it work

[@homemade_101]

electric filed

[@Shahidkhan-yo8wi]

What would it take to make it 3 volts instead of 9 volts?

[@homemade_101]

🤔

[@anmolkicreativity5442]

Use 1k resistance

[@bossoy0769]

Can we use any Transistor and how does it work?

[@homemade_101]

NPN ok

[@ayoubgouchida2289]

please give us the name of the black device that make sound???

[@homemade_101]

3V Active Buzzer

[@user-cy1yo3ps8i]

I can use 5v buzzera

[@homemade_101]

try

[@shanmugavelanm6925]

How it's works?

[@CodeWithZAN]

These transistors PNP or npn

[@homemade_101]

npn

[@manojsridharan728]

How to make metal detector.

[@homemade_101]

I will make

[@user-ne3wq6ki9x]

اين اجد bc547 وهل ينفعbc548

[@homemade_101]

yes, you can use it. but check pins

[@jasteraikensapungan6228]

can i remove the buzzer??

[@homemade_101]

yes

[@jasteraikensapungan6228]

@@homemade_101 can i remove resistor too?

[@OLEGZH354]

Почему не показываете схему в начале видио???

[@homemade_101]

it is

[@OLEGZH354]

​@@homemade_101???

[@OLEGZH354]

​@@homemade_101where is the circuit???

[@OLEGZH354]

@@homemade_101 show schematics at the beginning of the video...

[@restygarcia6604]

It can detect ac? Or resistance? It beeps when you touch🙄 there is no ac in you body but has resistance🤔

[@homemade_101]

AC

[@sacch6579]

Basically it's the rapid change of magnetic field.

[@sureyyaak5215]

If you make short, transistor bc 547 base and collector pins next to the buzzer tuching with your finger, the transistor turns on, the LED turns on and the buzzer sounds.