It works good. Made it just out of curiosity. Used 10k as i didn't have 50k. Difficult to control with 10k, but glad it is working. Thanks, you are the Boss.
@@MD.ISTIAKAHAMMEDRAHUL2041 confirm connections are correct twice ensure, use 50k. Because with 10k it is difficult to fine tune speed. It works 100%. It is very simple circuit. Also ensure components used are not defective.
For 12v fan use heatsink for BD 139 as I found it heating during start . Also use 220 Ohms resister from base to ground for 12 v circuit, it starts from 38 degree C. This is very useful if you are using for amplifier running on TRS 5400/1943 or using any heatsink based amplifier.
I am ur new subscriber your circuit s are different and give new idea very hardworking keep it bro keep it up and your channel stands on millions subscribers
Bohot acha device hai I really liked it bohot easy hai. Mara pass ek question hai kh auto cut for any battery charger mai mara pass 9.6v 700mah ki battery hai us pa kon sa relay or kon sa R3 lagaoo.
Sir, how many volts does the circuit work? Also, is the connection between the fan circuit and the temperature circuit only by approximating the sensors?
@@Ethcircuits if we use 12 v supply than with trimmer at full 5k resistance will produce 5.7v base -emmiter voltage for bd139 which is beyond 5V max limit... Can we use the circuit with 5v supply and connect the fan positive with 12v supply? Both supply should have common ground
2 ปีที่แล้ว
What resistance is needed to start the fan at 50-70 deg C (@ 19V)? Don‘t have any of these small adjustable resistors here.
Mera digital clam meter kharab HOGIA Hy.mujhy malone NHI tha ohm py set tha or galti sy 220 py lgadia ab us main reading NHI rukti hy.kindli BTA DAIN THANKS.
Circuit diagram dekhe jha vcc likha h vha positive voltage jha ground likha hai vha negative voltage dena hai ethcircuits.com/0-30v-0-10a-variable-power-supply-circuit/
Sir koi Amazon se buy na Krna ho kisi circuit board mai mil jaye ap bs itna bta do ki kis mei niklega yeh meri apna kam h tv led ko ap bta do ki kisme mil skta h
It works good. Made it just out of curiosity. Used 10k as i didn't have 50k. Difficult to control with 10k, but glad it is working. Thanks, you are the Boss.
Can You sure This diagram worked?
@@MD.ISTIAKAHAMMEDRAHUL2041 yes
@@MD.ISTIAKAHAMMEDRAHUL2041 confirm connections are correct twice ensure, use 50k. Because with 10k it is difficult to fine tune speed. It works 100%. It is very simple circuit. Also ensure components used are not defective.
Do you have diagram or what value of thermistor should i use to it turn on the mini fan with a 75-80celcius. I will use for my raspberry pi
For 12v fan use heatsink for BD 139 as I found it heating during start . Also use 220 Ohms resister from base to ground for 12 v circuit, it starts from 38 degree C. This is very useful if you are using for amplifier running on TRS 5400/1943 or using any heatsink based amplifier.
Thanks for the info
I am ur new subscriber your circuit s are different and give new idea very hardworking keep it bro keep it up and your channel stands on millions subscribers
Kounsa soldring iron app use jar rahey hen
If possible, how to make a thermometer circuit with an AVOmeter
Fan sirf on off hi hota hai ya speed bhi Kam_jyada ho sakti hai isse ?
Yes Speed bhi hota hai
Automatic Thermister 10k ntc and bd139 heating hore sir Kya kare
is viedo ke saath ye background song op bhai
samja nahi aap kya kh rhe ho
Thank you so much for what i was looking for after variable power supply. Can you please give a short protection circuit like DPS for this project
what changes are required to connect 12V Fan?
use same circuit use 12 volt input for 12 volt fan
Tq for sharing.. i try it use 12v fan. But its not working if i use 10k potentiometer. But it work fine when i use 20k potentiometer.
Bohot acha device hai I really liked it bohot easy hai. Mara pass ek question hai kh auto cut for any battery charger mai mara pass 9.6v 700mah ki battery hai us pa kon sa relay or kon sa R3 lagaoo.
outo cut mai 10.6 pa karu ga or 100 mah ka as pass supply du ga.
Auto cut set kr ne ka bad ma circuit ko 12 vot day sakta hu Kia? Mah =100
Awesome video ... great briefing .... Salam ..... from #Pakistan
Sir 24 volt ke fan(smps)ke liye same circuit hai Kiya???
Mein aisa fan banana chahta hu jo 25 °C pe chale kon sa thermister use karu .plz reply!!
aap same circuit bhi use kr sakte h, ya aap ye video dekhe aap k liye best h
th-cam.com/video/KLoW6A7PXfY/w-d-xo.html
Sir, how many volts does the circuit work?
Also, is the connection between the fan circuit and the temperature circuit only by approximating the sensors?
@@Ethcircuits if we use 12 v supply than with trimmer at full 5k resistance will produce 5.7v base -emmiter voltage for bd139 which is beyond 5V max limit... Can we use the circuit with 5v supply and connect the fan positive with 12v supply? Both supply should have common ground
What resistance is needed to start the fan at 50-70 deg C (@ 19V)? Don‘t have any of these small adjustable resistors here.
Please check this
ethcircuits.com/temperature-controlled-fan-circuit-diagram/
Useful Video, Thanks for sharing...
Can I use a normal resistor?
Sir , can we use disc type thermistor in this circuit
yes
dusra transiter konsa use kar sakte hai kya?
@@Ethcircuits thanks ..but i tried with tip122 it works well
Sir! Mera pas 10D-9 ntc stock hai to 10K ki badleme kya ye lagasakte hai?
Thanks sir
Negetive power supply kahade ??? Or kiya ye ntc 10D-9 se bansakta hay???
Thank you sir
You provide great contains.
Tumhara Work Hua kay bro
Isme source ka -ve emitter me jayega aur +ve fan ke +ve ke sath thermistor se attach rahega😌
G bilkul sahi
Dygram bhi bnadyty
Iam first super project sir. ....
Sar yah thermistor mujhe nahin mil raha hai kya karun
aap ye circuit use kre agar uske parts nahi mil rhe to
ethcircuits.com/temperature-controlled-fan-circuit-diagram/
Please share circuit digram
Agr + thermister ki 1 pin h to negetive kaha hogaa bro.....
Sir bd139 kha milega kiss mai niklega tv ki kitt mai mil jaye ga
Sir please bta do kha mil sakta h mai bhi sir electronic ka kam krta hu ap bus bta do kha milega
Good job
Bhai aap ne power input kahan dena hai o bataya nahi
Mera digital clam meter kharab HOGIA Hy.mujhy malone NHI tha ohm py set tha or galti sy 220 py lgadia ab us main reading NHI rukti hy.kindli BTA DAIN THANKS.
Sir yeh kha milega BD139
Circuit diagram? BD139 Emmiter connection is not clear.
please check at my website link in description
Wow
Please send the circuit diagram of this project
circuit link in description
Es controller ki sat rely kistrah convict kersktaho
@@Ethcircuits bhot mehrabani Sir esee circuit ko plat krain. Matlb olta krki eggs incubator kileya
Very good
I need help this diagram not working 😞
Isme supply kaha se diye hai
Circuit diagram dekhe jha vcc likha h vha positive voltage jha ground likha hai vha negative voltage dena hai
ethcircuits.com/0-30v-0-10a-variable-power-supply-circuit/
Pr us diagram me toh capacitor bhi hai aur humne capacitor use nai kiya hai🤨
Please give the circuit diagram
Description link not support
Bro i just checked link is working check 3rd circuit at this page
ethcircuits.com/0-30v-0-10a-variable-power-supply-circuit/
Thanks vai
Tharmestr. Ki valu kya hogi😮
Power input kaha Dena hai
5 volt
happy durga puja to all my new freinds
I am not satisfied by your analysis about connections positive & NEGATIVE
Multimeter tempreture 🙂🙏
Aap na mara reply Nahi ki ya
You give link not supporting
Please check again link is working
Where is diadram
Where is 5 volt give
check in circuit VCC means + volt and GND means -
Sir apka number chiye
فاشلة لازم عند الدرجة37تعمل المروحة
5v bala nhi h koi
Sir koi Amazon se buy na Krna ho kisi circuit board mai mil jaye ap bs itna bta do ki kis mei niklega yeh meri apna kam h tv led ko ap bta do ki kisme mil skta h