How to make a Touch Sensor using BC547 transistor on Breadboard
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- Опубликовано: 13 ноя 2017
- In this video, I have made a simple touch sensor circuit using the BC547 transistor on the breadboard. This touch sensor can be used as both touch sensitive light switch and door bell. I have also explained the working principle of the touch switch circuit.
I will request you to watch the complete tutorial video of the touch sensor project but you can also jump to any topic by click on the following Time Stamps:
00:34 How to design a simple touch sensor circuit using transistors
03:31 How to make touch sensitive door bell
04:30 Working principle of the touch sensor switch
Components Required for the touch sensor:
1. BC547 transistor 2no
2. 10K ohm resistor 1no
3. 220-ohm resistor 1no
4. LED or DC buzzer
5. 9 volt Battery
6. Connecting wires
7. Breadboard
Here I have made a simple touch sensitive switch using BC547 NPN transistor and I have explained the working of the touch switch using the touch switch circuit diagram for better understanding that how the touch sensor works.
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It was working..Thank you for the circuit and your guidance
Thank you, I tried this at my home, flawlessly worked!!
Great 👍
@@TechStudyCell I'm interested to try more projects like this, please help sharing any other videos or projects like this to try at home :) Thank You
Very nice video.I like the making part and the explanation of the schematic.Thank you for these videos.
you just made my day.... wonderful. I was having a very bad day.
and then i found this video and tried this circuit. and voila!! I was happy... seriously man! thanks a lot for making me happy!! (Perhaps you will not understand why I am thanking you so much for such a simple thing, but never mind!!)
Thanks for the feedback.
Bro where to get metal wire
@@veeraraghul9626 you can take it from any wire.
I am Dr. Chivukula Sambasiva Rao, I did the project . Under Your guidelines it's work very well 🎉 TQ
Good explanation. Thank you
Which transistor did u use
Nice presentation! Goodjob thank you
Thanks...
easy to follow step by step instructions, thanks ..
Thank you so much your video has helped cause i have a project to submit at school. Thanks once again Sir...
@Tech StudyCell
Cool video....thanks for sharing! :)
Thanks for the feedback
Good job... Well explained👏👏👏 all the best😇😇
Thanks
I am try to this project it's work very successful
great...
I try but not working
Sorry working successful
Very clear explanation. Thank you!
Tejas Mhala which transistor did u use
Very cool...please do more shows like this..
Thank you for the feedback.
Best for mini project
Thanks
So nice and cool vedio i use this for my electronics project
great video and easy to understand
Glad it helped
Thanks for this video is very beautiful
You are welcome...
Can we use transicter Bc548 inside of Bc547 ??
Well explained
Good explanation 😊
By far the best video i saw
Thanks
Hi.. Its nice video & got output perfectly by using both LED & BUZZER. Can u explain how its happening? I am unable to understand... how its working? By connecting base & collector
very small current flow through your finger from collector to the base so transistor turns on and start conducting. thus circuit turns on.
Is it possible to hold the signal on first touch upto next touch?
Means on 1st touch light will glow and on next touch light turns off?
Another really good video. Tq. !!
Welcome
Super bro we got the experiment
Thanks 👍 bro
Welcome 👍
It is really awesome
Thanks 😊
you need a 1k ohm pullup resistor between led ground and positive 5v
Can I drive a relay in place of LED? Thanks.
how did you find the calculations
Please tell how to make a single plate touch switch . And the led , connected in the output , will glow only on touching the metal plate . Means as soon as the finger is withdrawn the led will stop glowing.
Thanks
Welcome
very nice 👍👍👍
Do you have a circuit diagram for this?
Sir i want to operate 12 v relay woth touch sensor...can i?
Good...
Nice
Thanks
What is role of both resistors in the circuit????
Amazing bro ♥... Working smoothh..
I want your help brother.... Is there any good site from where we can buy such small components? I struggle a lot to buy these small tiny things
Nice video but we don't have great plate
Can we use bc548 instead of bc547 ?
Can I use higher values of resistor like 10 M 0r 1M ohm etc.
bro as the value of the resistor increases then the brightness of the light decreases. you can use the higher value of resistor when the supplied voltage or current is higher.
What the current across LED ??
If you remove transistor T1 and put a normal switch, will it be the same?
If you remove T1 with a manual switch then the led will glow when the switch is in on state. Then the circuit will no more a touch switch circuit.
Mantap la awa
How happens if you touch the left wire with left hand and the right wire with the right hand? Does it still work?
If you only touch the base then it will works its because there is also small amout of current flowing through your body. Now, turning to your question then the answer is yes. the circuit will work.
I made it easy and it have and gate in only 2 transiter
Make the emergency light of touch sensor use the bc547 transistor
Which transistor
bro can i give 24v d.c supply for BC547 transistor for running 24v d.c motor
It better to use a power transistor instead of BC547
What are the possible viva questions that can be asked from this project?
Kya bhai 😂😂😂
@@mitulkumarchoudhary5867 😂😂
I made about same with 1 WIRE
The circuit works even with one transistor . What is the purpose of second transistor other than amplification purpose?
The 2nd transistor is used for better amplification.
@@TechStudyCell other than amplification any other purpose?
can I use this circuit on PCB?
Yes
yes
Send pcb design
my friend used this project but her project teacher ask question why used this 10k
and 220ohm resistors in ckt
Can you give description in chrome
Can we do with one transiator .!!!🤔
White Feather ues but the led shoud be connected in series
Can we make this wit H331 transistor
You can use any Bjt npn transistor
While touching one touch wire, my LED Is glowing . can you rectify me
Can I use 10ohm instead of 10k I'm resistor
it's better to use higher value resistance.
@@TechStudyCell why is it better to use high value resistance ? What will happen if we use low value resistance ? Will it affect the circuit?
can I use BC548 transistor??...
plzzz reply
yes
What we call that board on which whole thing is done ?£
Nanobot it's called breadboard.
The resistor is connected to the collector, not emitter....
You mean the 10K resistor, ok, but this person is one of the BEST to teach ELECTRONICS. CONGRATULATIONS And THANKS.
Can it be done in PCB
yes
Can I ask for the circuit design?
After watching the video you can easily design the circuit.
By mistake if I connect negative of buzzer with positive of breadboard will the breadboard get destroyed
no.
Where to get metal wire bro
Cooper wire can be used instead
can i use male to female connecting wire
yes
use ldr
Agr kisi dusre resistance ka resistor use krenge toh yeh work nhi krega kya
Yes it will work. But choose close resistance value
@@TechStudyCell thnx☺
where we can find bc547 ??
You can find BC547 from any local electronics shop, Amazon etc. Or you can use any NPN Transistors instead BC547
@@TechStudyCell tnx bro .. Can you give me an alternative because I don't understand in electronics .. Something I can find inside home appliances
Ap kebal ek tar bala car ka touch sensor bana ke dekhao jo ki car ko touch krne pr bole ye do tar ka h
Can I use this circuit to develop EV3 Touch Sensor.Pls reply
Please place circuit diagram for talking toys
Circuit
Send signal
if you like to explain ............. why you are two transistors BC 547 ??????
For better amplification of input signal. you can use one instead.
Ye Modl jesa Modl mera tha lekin mere sath beimani hui
Can it be done on full breadboard?
yes