12v to 3v dc converter- DIY only in Rs3.

[@pyarmohbat4821]

boht he easy ciruit good luck.

[@techflair]

Thanks 👍

[@devanshgupta2702]

due to your knowledge, you gain a new sub. today
thankyou for making things easier for us

[@techflair]

Always bro ✌️❤️ ..... Thanks 🙂🙂

[@devanshgupta2702]

If the project mension above works we will reward you by 10k

[@techflair]

No don't reward me by 10k ...just reward yourself when you learn to do these projects from my videos .

[@devanshgupta2702]

Sir actually we are a manufacturer of lithium ion battery named by DRIVE VOLTS PVT LTD. So we want this system of dc to 12v dc or 220Ac.

[@techflair]

Okay 👍... Go for this circuit it works well for converting dc current.

[@yuvaraj80]

Hi, just curious. Why do you need a zener diode. Just the resistor alone won't work?

[@teocelquiniquito2962]

can I ask you sir what is the wattage of 1k resistor that we use for 3v battery or 3.7 volts?

[@swagerbhatia6771]

Nice bro ....upload more 😍

[@techflair]

Bilkul 😊

[@thakurankur9734]

Exactly what i was looking for. But is reliable for longer run, coz i gonna use this for an accessory in my car

[@techflair]

if you need it for longer use then apply heat sink .. and thanks for your comment ♥️

[@letsflyover6442]

Good ...keep going

[@philosopherlove8243]

Nahi, sirf 1 kΩ resistor ka istamaal karke aap 12V ko 5V mein convert nahi kar sakte. Iska reason yeh hai ki voltage drop sirf resistance par nahi, balki current ki value par bhi depend karta hai. Voltage drop across a resistor follow karta hai Ohm’s Law ko:
𝑉
=
𝐼
×
𝑅
V=I×R
Agar current constant nahi hai, toh aapko consistent 5V nahi milega. Resistors sirf current limiting ke liye kaam karte hain, voltage regulation ke liye nahi.
Proper Solution:
Aapko 12V se 5V lene ke liye ek voltage regulator ka istamaal karna hoga, jaise:
LM7805 Voltage Regulator:
Yeh 12V input le kar stable 5V output deta hai.
Aapko capacitors bhi lagane padenge stability ke liye.
Buck Converter (DC-DC Step-Down Converter):
Yeh ek efficient option hai jo voltage ko step-down karta hai with minimal power loss.
Voltage Divider (Optional for Low Current Applications):
Agar current bohot low required hai (e.g., sensors ke liye), toh aap 1 kΩ aur 2 kΩ resistors ke combination ka use kar ke voltage divider bana sakte hain:
𝑉
𝑜
𝑢
𝑡
=
𝑅
2
𝑅
1
+
𝑅
2
×
𝑉
𝑖
𝑛
V
out
=
R
1
+R
2
R
2
×V
in
Example: R1 = 1 kΩ, R2 = 2 kΩ, Vin = 12V → Vout = 4V (approx).

[@needlethread4715]

will this drain the battery fast if i will use 12v rechargeable battery?

[@lengda]

the facts is you don't need 4148 diode, just put 1K ohm resistor on vcc, LED get glow

[@aijazahmed9113]

Definitely on 3v amps should increased?

[@sbsingh7206]

Own bro ...so simple 👍

[@techflair]

Thanks 😊

[@SanjeevKumar-sm5ls]

1k ohm resistor is ok i got it, but what about the wattage, actually i want to convert 12v to 3.3v for my modemcu

[@lengda]

i have try and test, no load on led, voltage still is 12v, becareful !
only on load, led to get 3v

[@techflair]

All the things related to output are mentioned already in video... If you have any queries related to voltage then check your resistor or diode .

[@noivalencia]

How about direct to dc..?

[@techflair]

Video is coming soon. Thankyou ♥️

[@beeverywhere7982]

Nice project .....so simple

[@techflair]

😊😊❣

[@bydoktor86]

12vto 1.5v help me

[@MDSHOHAG-rh8qh]

Amp??

[@fruitninja1224]

5A current lena ho to

[@techflair]

Just use a adaptor of high amp , also simply change the resistor to 5 amp with same voltage value... Thankyou ❤️

[@MonicaLawas]

are you Shure i was trying to making

[@ArmanHasanJewel]

Background music is disturbing for watching. People hate these type of Videos. So, avoid this to grow up your Channel

[@pamubajpai5758]

102% wrong don't try

[@techflair]

Okay thanks... But just try to make this once by yourself ✌🏻

[@SarthakChauhanOfficial]

​@@techflair bro whats the number of zener diode