Homemade non contact voltage tester using BC547, Simple AC detector

[@Yahya-d7p]

Thanks I made it before 10 minutes ❤

[@homemade_101]

enjoy..

[@mdirshadmdirshad8168]

👏👏 nice bro🎉

[@homemade_101]

thanks

[@Humanity082]

Nice work bro

[@homemade_101]

Thanks 🔥

[@priyanthaweerakoon4253]

Thanks Bro It is work 🎉🎉🎉🎉

[@homemade_101]

Welcome 👍

[@samsonbully9232]

Thanks it worked 😊

[@homemade_101]

welcomee

[@Aaliyah21]

❤❤ super 🎉😊

[@homemade_101]

Welcome

[@AltafaliJamali-l1f]

Few minutes its working okay after this is blinking led buzzer when near the current wire both are on off on off problem...

[@JuliaNedelcheva-b8w]

I did it the exact same way and it detects all the metal around even wires with no current on them. Any advice?

[@hi73sh]

Even the insulators also

[@AltafaliJamali-l1f]

Yes

[@VitMcG]

Why does it have to be copper wire ? Is there alternatives?

[@homemade_101]

use any conductors.

[@Nagendra5633]

Shall we use it for 1000v testing?

[@homemade_101]

yes AC

[@Nagendra5633]

@@homemade_101 thankyou

[@matter3232]

Can you unplug the wire and see if it doesn't buzz

[@homemade_101]

you can use buzzer

[@ayoubgouchida2289]

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

[@homemade_101]

220 ohm ok

[@alimuhammad5215]

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

[@homemade_101]

DC voltage. 3.7v battry or dc power supply

[@Heshasauto]

Can i use a 3v battery

[@homemade_101]

try

[@coronabatch620]

@@Heshasauto just remove resistor and give 3 v

[@tharanginadeeshani230]

මේ ලංකාවෙ නේද

[@gerardogarciagonzalez2001]

Si, el circuito funciona adecuadamente hasta con 5v, sólo remueve la resistencia y listo!! 👍🏼

[@bsuryatnebtkvr.5804]

Ht line ku use pannalama

[@homemade_101]

try

[@j.igamingyt4573]

Bro, can i use 100 ohm resistance

[@homemade_101]

I think can't bro. but try

[@j.igamingyt4573]

@@homemade_101 ok i will try,but why you use the resistor, for light-buzzer or transistor?

[@arungosavi8188]

@@j.igamingyt4573 for led sefty

[@senkuishigami8187]

Can we use bc2222 ?

[@homemade_101]

try i think can.

[@senkuishigami8187]

@homemade_101 we tried it but the buzzer starts beeping after we use the battery

[@gozharry7404]

Doesn't seem to be sensitive enough? only detects when millimetres away? Normal use case is detection of ac cables in walls & ceilings, with 2 to 6 cms separation?.
Interesting, bone the less.

[@bigmd1343]

@@gozharry7404 add more power

[@franciscocontreras6317]

se puede con una bateria de litio de 3.7 v?

[@pavann-vv8uf]

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

[@homemade_101]

electric filed

[@samatam.veerabhadrarao3541]

Electro magnetic field

[@blisca]

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

[@homemade_101]

yes working

[@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

[@saichannel3196]

It is working

[@homemade_101]

yep this is working

[@jasteraikensapungan6228]

can i remove the buzzer??

[@homemade_101]

yes

[@jasteraikensapungan6228]

@@homemade_101 can i remove resistor too?

[@CodeWithZAN]

These transistors PNP or npn

[@homemade_101]

npn

[@FasikaTeka-d6m]

I can use 5v buzzera

[@homemade_101]

try

[@anantdengani76]

I use aluminium wire rather than copper wire as conductor

[@homemade_101]

Is it works

[@xskull9911]

Circuit diagram plz?

[@homemade_101]

this is simple bro

[@AlexanderZapataIndividual]

Can you use it to locate electric wire behind a wall?

[@homemade_101]

yes

[@AlexanderZapataIndividual]

@@homemade_101 awesome.

[@pagalboys1069]

Neutral wire e bhi so karta hai

[@homemade_101]

live

[@yashkumar9085]

Resistance kine k ka h

[@homemade_101]

??

[@PRAGYANSHPRO]

The copper is insulated or not

[@homemade_101]

it is no problem

[@thenigethu9998]

Sir how many volt chack

[@Amar7talks]

Sir please explain how it worked..
Otherwise every thing is of no use

[@homemade_101]

When we place this antenna near an object that is AC energized, a small current gets induced into the antenna due to electromagnetic induction. This current triggers the first transistor. Output of the first transistor triggers the second. The second transistor switches on the LED indicating that AC voltage is present.

[@samatam.veerabhadrarao3541]

It is use for Serial bulb wiring checking. That means where is wire contact missing.

[@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.

[@adityapatare4683]

It detects resistance and deflection in magnetic field around coil and wire of component carring voltage 😅😅😅😅😅😅👍

[@THEDIEGONANDO]

i need for dc you can hel me

[@homemade_101]

Can't DC bro

[@manojsridharan728]

How to make metal detector.

[@homemade_101]

I will make

[@aqilkhan-te9vd]

Can you give me the circuit

[@homemade_101]

this is simple bro

[@Factboyking1717]

That is working

[@homemade_101]

yes this is good

[@ricardoantoniomartealmonte7434]

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

[@homemade_101]

yes

[@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...

[@AbdoRahmm]

اين اجد bc547 وهل ينفعbc548

[@homemade_101]

yes, you can use it. but check pins

[@shanmugavelanm6925]

How it's works?

[@Carlosgamboaacosta]

Pasame el diagrama

[@AjayMishra-xm2ci]

Hamne banaya lekin kam nahi. Kar raha

[@mdvasani7494]

diagram please bro

[@gmrrocky7728]

@@mdvasani7494 daigram

[@md.javedansari8304]

Work nhi kr rha bro

[@homemade_101]

this is working 100%

[@bsuryatnebtkvr.5804]

Ht line la use pannalama

[@homemade_101]

try