How to Make 12V Regulator Using LM7812 IC | Simple Ideas

How to Make 12V Regulator Using LM7812 IC | Simple Ideas | Javier's DIY

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3 жыл бұрын

How to Make 12V Regulator Using LM7812 IC | Simple Ideas | Javier's DIY
The ic 7812 is a positive voltage regulator which means that it generates the positive voltage with respect to the common ground. In case if both the positive and negative voltage supply is needed in the same circuit. The voltage regulator ic 7812 is combined with its corresponding 79XX family IC that is 7912 IC. The IC can handle maximum load of 1A to 1.5A but the input current should be 2A to get 1A to 1.5A at the output.
Component's Needed:
° LM7812 IC
° 25V 1000uf capacitor
° 16V 1500uf capacitor
° Heatsink
° insulated wires
° soldering
° 23V powersupply input
Subscribe to my channel and click the bell button to be updated on my next video. Thank you for watching♥️Enjoy and have a great day.
👉 / javier'sdiy👈
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#12VVoltageRegulator
#LM7812IC
#VOLTAGEREGULATOR

Пікірлер: 168

@CreativeWorldPro 3 жыл бұрын

nice project

@JaviersDIY 3 жыл бұрын

Thank you sir. Let's support each other.

@Tomas_Prucha 3 жыл бұрын

Nice!

@ShareTechCreative 3 жыл бұрын

Nice work

@JaviersDIY 3 жыл бұрын

Thank you sir.

@mixme8655 3 жыл бұрын

Thanks

@JaviersDIY 3 жыл бұрын

Thank you sir.

@cesarjorgemurillobarientos1813 2 жыл бұрын

very good

@JaviersDIY 2 жыл бұрын

Thank you

@wahyupriadi8264 2 жыл бұрын

Could you provide schematic for lm7812 with 2 tip3055 in paralel? I wanna know what capacitor and where're they located, current output should be upto 10A

@patrickdjebar9225 2 жыл бұрын

Great job with the old 7812 :-)

@JaviersDIY 2 жыл бұрын

Thank you

@sershetech5584 3 жыл бұрын

👍👍👍

@JaviersDIY 3 жыл бұрын

Thank you sir

@pavil58yt Жыл бұрын

Were you able to get 1 amp through it without overheating at that input voltage and with that small heatsink?

@JaviersDIY Жыл бұрын

No sir. If current exist, heat exist also because heat is the output of the circuit.

@daitedve1984 Жыл бұрын

Javier, important question: what if my input voltage jumps a lot? Say, from 8 to 14 volts (imagine it's car bus). Will it help to put BIG capacity before LM or I need smth else? What will happen if I put big capacity *after* LM?

@kennmossman8701 10 ай бұрын

READ THE DATASHEET a large cap the IC can destroy it! use a boost-buck converter

@clamman7505 8 ай бұрын

what if it is a 12v battery that can get charged up to around 15v and want to use led strips on 11v dimmed@@kennmossman8701

@WTutor16 9 күн бұрын

Posso usar 1000uf 16v?

@efrainvelandia3785 2 жыл бұрын

El trasformador permanece conectado o solo para cargar los capacitores.

@JaviersDIY 2 жыл бұрын

For better understanding please use the universal language

@josegante6982 Жыл бұрын

como vas a desconectar la fuente de alimentacion??? que clase de pregunta es esa... un capacitor no es una bateria... si lo desconectas obviamente no va a haber ningun voltage despues de unos segundos...

@lukewidmer6076 2 жыл бұрын

Is there any way this could be adjusted to put out around 13.5v? I am trying to charge a 12v battery with it.

@JaviersDIY 2 жыл бұрын

You need to have an adjustable voltage regulator sir

@kavinsp 2 жыл бұрын

7812 will only output upto 12v

@kennmossman8701 10 ай бұрын

YES! put diodes in series between the IC ground pin and the actual Ground. READ THE DATASHEET!!!!!!!!!!!!!!!!!!!!!

@arahyabayat1288 4 ай бұрын

There's a battery charging and protection module made for just that

@mrghost8145 2 жыл бұрын

Can we use it for 12 volt amplifier (PA Siren set) in vehicle..?

@JaviersDIY 2 жыл бұрын

No sir because the output current of this projects is not enough to power the amplifier.

@mrghost8145 2 жыл бұрын

@@JaviersDIY then any other option..? Please help me

@JaviersDIY 2 жыл бұрын

@@mrghost8145 you need to have a 12V Powersupply with a high output current like 5A up.

@joeybiscocho3796 Жыл бұрын

Good day sir, can i use this in my 24volts jeep using 12 volts Led tail lights (signal light, break light and back-up light)

@kennmossman8701 10 ай бұрын

check tha Max voltage iin the datasheet. Include the charging voltage (maybe 28V

@GuzSurya 2 ай бұрын

good video. but what if I use the LM7809 ? how much value of the elco that I should use? sorry, my english is bad

@JaviersDIY 2 ай бұрын

The purpose of LM7809 is to stepdown any voltages around 35V to 9V positive supply.

@asifhasan2142 Жыл бұрын

Can I use 50v 2.2uF capacitor at both the input and output ends? Please note that I have a 12v battery with more Ampere. I want to take input for the l7812 ic from this 12v battery. Though the battery is already in 12v. But I want to get 12v output with a more assured voltage value of 12v and I want to get limited current flow.

@JaviersDIY Жыл бұрын

Yes sir it's okay to use that capacitor

@asifhasan2142 Жыл бұрын

@@JaviersDIY Thank You Sir !

@wernerpeter9706 Жыл бұрын

A capacitor of 0.22 uF is recommended at the input and 0.1 uF at the output. This is for stabilization and prevents the voltage regulator from oscillating. The huge electrolytic capacitors here are exaggerated and useless. The voltage regulator is pointless for your use, since it has a 2 V dropout, i.e. to get 12 volts at the output, at least 14 volts must be present at the input. In addition, a voltage regulator, as used here, is not a current limiter. If you want to learn more about the LM7812 (or any other voltage regulator), take a look at the datasheet.

@JaviersDIY Жыл бұрын

@@wernerpeter9706 it is a very well said sir. Thank you

@Avenger2150 6 ай бұрын

Input capacitor should be 0.33 uF according to datasheet. @@wernerpeter9706

@jaypormei1881 2 жыл бұрын

Can I use 2200µF 50V and 1000µF 16V? I have only over 35V power source and I need to regulate with 12V output. I don't think the output is doable since you used 1500µF 16V caps.

@JaviersDIY 2 жыл бұрын

Yes sir you can

@jaypormei1881 2 жыл бұрын

@@JaviersDIY Alright thanks!

@vinayagamvinay4879 6 ай бұрын

Did it work @@jaypormei1881

@rajvaghela8540 3 жыл бұрын

LM7824 ka video place

@a21creation57 3 жыл бұрын

Will the transistor burn without capacitor

@JaviersDIY 3 жыл бұрын

No sir but it is important to have a capacitor

@memasabilang6575 2 жыл бұрын

bossing... pwede b yan supplyan ng 24V tulad ng mga battery supply s mga trucks (howo, giga, super great)? d ko alam kung ilang amperes ung supply n mangagaling s battery, pero malamang mataas un. lagyan ko kasi sana ang truck kong dina-drive ng 12V n LED (kadalasang gamit s motorsiklo) ksi maraming pagpipilian at mas mura.

@kennmossman8701 10 ай бұрын

English naman!

@teguhraharjo5207 2 жыл бұрын

Apakah pakai elco yang uf dan voltasenya lebih tinggi dari yg dituturial bisa..... 🙏🏻

@JaviersDIY 2 жыл бұрын

For better understanding please use the universal language

@chalokips7712 Жыл бұрын

Is that 12v dc strong enough to work well with 12v 60watts LED television please tell me

@JaviersDIY Жыл бұрын

No sir because it only give a maximum output current of 1.5 amps

@kennmossman8701 10 ай бұрын

@@JaviersDIY ano ba

@SomnathDas-ej3ve Жыл бұрын

Can I give 36volt to the 25v input capacitor and will it be safe for capacitor and the ic

@JaviersDIY Жыл бұрын

Tha capacitor will explode sir it is because you exceed the maximum input voltage.

@JaviersDIY Жыл бұрын

It's better to change the capacitor to the higher one

@sawfilm3655 3 жыл бұрын

If i add 18 volt dc input then can i get 12 volt dc output?

@JaviersDIY 3 жыл бұрын

Yes sir.

@freestylemangaming 2 жыл бұрын

How to choose the desired capacitor according to the input and output voltages?

@JaviersDIY 2 жыл бұрын

Use capacitor that would fit to that output voltage that more than the value

@saiyanumar 3 жыл бұрын

uf capacitor is necessary? Can we get 12 voltage without uf capacitor?

@JaviersDIY 3 жыл бұрын

Yes you can get but it is necessary to put a capacitor

@saiyanumar 3 жыл бұрын

@@JaviersDIY Ok thanks❤

@JaviersDIY 3 жыл бұрын

Your welcome sir. Come back again sir

@ajsanginez2985 Жыл бұрын

Can I use a 12volts input in this?

@JaviersDIY Жыл бұрын

No sir. The input should be higher than the output voltage

@tn7719 3 жыл бұрын

Does the 7812 transistor stops working when it get over heated and starts working when it get cooled ...?

@JaviersDIY 3 жыл бұрын

No sir. Once it burns the IC it will not recover. It is very important to put a heatsink to absorb the heat.

@tn7719 3 жыл бұрын

@@JaviersDIY What is the max input voltage and ampere for 7812 Transistor sir ..?

@JaviersDIY 3 жыл бұрын

@@tn7719 5A below sir.

@kavinsp 2 жыл бұрын

@@tn7719 from data sheet i can recall the input being upto 35v and max current of 1.5A

@grizzlygamingGG 2 жыл бұрын

Can you help me? I need to regulator 14.4 volts dv down to 12 volts dv at 200 amps. I am connecting solar battery bank to computer.

@JaviersDIY 2 жыл бұрын

Buy a module sir to compensate your needs.

@quadroedm359 3 жыл бұрын

that is the electrolytic capacitor or non-electrolytic capacitor ??? i can not see it clearly ? pls tell me ?

@JaviersDIY 3 жыл бұрын

Electrolytic capacitor sir

@quadroedm359 3 жыл бұрын

@@JaviersDIY It means there are 2 pole, that is positive pole (+) and negative pole ( - ), Right ?

@inside.rama_adis Жыл бұрын

what is the function of both capacitors for LM Ic ?

@JaviersDIY Жыл бұрын

To make the voltage smooth especially in the output.

@inside.rama_adis Жыл бұрын

@@JaviersDIY thanks a lot🙏

@jovinomediomundo2038 Жыл бұрын

Porque en este circuito se calienta el lm7812, como evitó ese recalentamiento

@JaviersDIY Жыл бұрын

For better understanding please use the universal language

@alexchong1979 2 жыл бұрын

i would like to see 12v batter in and output 3 ~ 5 12v 1-1.5A draw stable low head diagram :D

@kennmossman8701 10 ай бұрын

are you making cake..........batter

@tmproductionstheog Жыл бұрын

I'm trying to go from 36v to 12v to run a led light. I need to limit voltage down to 12 from. 36

@JaviersDIY Жыл бұрын

You can use that one sir.

@kennmossman8701 10 ай бұрын

Good advice for destroying the IC @@JaviersDIY

@netdedouga Жыл бұрын

What difference does it make if you use capacitors and if you don't use them? Can you tell me what is the job for the capacitors in this project?

@JaviersDIY Жыл бұрын

A capacitor is a two terminal device that store energy in the form of electric field. When voltage is applied to the capacitor, it starts charging. When capacitor is connected to any device such as electric bulb, it starts discharging. So that's the job of the capacitor in my project.

@netdedouga Жыл бұрын

@@JaviersDIY Thanks. Some people in KZfaq use L7812 to regulate e.g. 18v into 12v without capacitors and it seems working. What if you remove these capacitors, what trouble will it have?

@JaviersDIY Жыл бұрын

@@netdedouga there's no trouble if you will not put a capacitor

@daitedve1984 Жыл бұрын

@@netdedouga I think capacitor is needed to smooth voltage jumps (on both, input and output). It's always good idea to put capacitor.

@kennmossman8701 10 ай бұрын

@@daitedve1984 READ THE DATASHEET!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! This video is WRONG BTW

@darkskatemanzano9148 6 ай бұрын

WHAT IS THE VALUE OF THE RESISTOR BRO? TNX...

@JaviersDIY 6 ай бұрын

there is no resistor in the circuit sir

@WTutor16 9 күн бұрын

Can in user 1000uf 16v??

@JaviersDIY 8 күн бұрын

yes sir

@WTutor16 8 күн бұрын

@@JaviersDIY tranks 👍

@aadamhussain9619 2 жыл бұрын

is it 2A or 1A coming out

@JaviersDIY 2 жыл бұрын

It's only 1.5 Ampere sir

@aadamhussain9619 2 жыл бұрын

@@JaviersDIY thank you but is there any way that i can increase the amp

@aadamhussain9619 2 жыл бұрын

@@JaviersDIY question I'm using a 7812 transistor to reduce a 20v drill battery to run a 12v speaker box. That part went well but when i turn up the speaker bass the box shuts off. (someone told me that there isn't enough ampere but im not sure) it there any way u can advice me what to do thank you

@harishkumar-lo7ec 11 ай бұрын

48v adapter ko 12v me kese change krenge

@JaviersDIY 11 ай бұрын

For better understanding please use the universal language

@malinduomantha3467 2 жыл бұрын

cant this circuit use for an input of 12-13v to get an output of 11.8-12v?

@JaviersDIY 2 жыл бұрын

Yes sir

@vinayagamvinay4879 6 ай бұрын

But it's shows only 2.8 volt

@ssuryaprakash2920 11 ай бұрын

Sir why u use the 25 v capacitor input side and 16 v at output side

@JaviersDIY 11 ай бұрын

Because this is a voltage regulator meaning to say the input voltage is much higher than the output voltage, that's why I put a higher capacity value of the input capacitor

@ssuryaprakash2920 11 ай бұрын

Can I use different voltage capacitors

@karuna1059 2 жыл бұрын

Maximum current output?

@JaviersDIY 2 жыл бұрын

1.5 Ampere sir.

@anannyasriflex3728 2 жыл бұрын

sir what is the value of the resistor you're using in the led light ?

@JaviersDIY 2 жыл бұрын

Sir there is no resistor their. I directly connect it.

@dstpollo7410 Жыл бұрын

brown black red is 1K

@anannyasriflex3728 Жыл бұрын

@@dstpollo7410 Thank You...

@JaviersDIY Жыл бұрын

I don't use a resistor sir

@anannyasriflex3728 Жыл бұрын

@@JaviersDIY sir i asked about the value of the resistor used in that 1.5 volt red led @ Bridge rectifier + 4 filter capacitor near the transformer...we can clearly see the blue resistor @ 3:26

@mg.g8332 4 ай бұрын

Is this Dc output or ac

@JaviersDIY 4 ай бұрын

DC sir

@ClaudioEsposito-rk1fv Жыл бұрын

Q ocurre si Vin picos de 120v CC?

@JaviersDIY Жыл бұрын

For better understanding please use the universal language

@rosieone5670 6 ай бұрын

Well it’s not 12 volt output is it ?

@JaviersDIY 6 ай бұрын

no, it a 12v regulator so the outout would be 12V

@vinayagamvinay4879 6 ай бұрын

Hi, out put shows 2.8 volt why

@JaviersDIY 6 ай бұрын

how many input voltage you put?

@adnanshaikh5548 2 жыл бұрын

Hii Sir I Want To Regulate 14v Dynamic Voltage into 7v Regulated Voltage What Should i Do?

@JaviersDIY 2 жыл бұрын

Try to use adjustable voltage regulator so that you will only adjust it to the voltage you like.

@asifhasan2142 Жыл бұрын

Sir, Can I use a 50v 2.2 uF capacitor at the input side and a 50v 0.1 uF capacitor at the output side?

@JaviersDIY Жыл бұрын

Yes sir

@daitedve1984 Жыл бұрын

Javier, note: if you apply your "device" to power LED, you do it completely wrong. On LED you should supply voltage AT LEAST enough to feed all of 'em, even 200V!! But what you should limit/regulate is CURRENT! Current must be same as LED needs.

@akhtersial3060 Жыл бұрын

i can used 7815 IC with capster ¿

@kennmossman8701 10 ай бұрын

your assertion lacks context. For a LED strip CV is good

@PauloGraciliano-ip5fd Ай бұрын

Costei

@JaviersDIY Ай бұрын

for better understanding please use the universal language

@NEVEREVERGIVEUP478 Жыл бұрын

Can it pass 10 ampere current through it I want to use car audios system transformer with bridged rectifier gave 20volt output it will damage

@JaviersDIY Жыл бұрын

No sir. The maximum input current is only 1.5A

@NEVEREVERGIVEUP478 Жыл бұрын

@@JaviersDIY what can I do to reduce the voltage to 12v 🤧

@PavanPyati 2 жыл бұрын

Can I add 3 ICs in parallel to get 3A current?

@JaviersDIY 2 жыл бұрын

Yes sir. You can

@PavanPyati 2 жыл бұрын

@@JaviersDIY thanks Sir, does it over heat?

@JaviersDIY 2 жыл бұрын

No sir. Just put a heatsink in all ICs

@PavanPyati 2 жыл бұрын

@@JaviersDIY thank you, will keep you updated!

@JaviersDIY 2 жыл бұрын

@@PavanPyati Thank you

@prettybuttar2318 2 жыл бұрын

Fail

@studiotulip1556 2 жыл бұрын

How to fix L7812 ic load time functionality inactivity while device connected on running mode ? Query1: ===== I used 12v*2 3000mA with 2 diodes 5408 and 2200uf/35v . Which other capacitor value need to use in the output section of L7812 ic ? Query2: ======= My 12v*2 3000mA transformer where i connected 2200uf and 2 diodes 5408 and out shows 16.68 v. Then i added L7812 and voltage shows 12v with heatsink . But while i charged a lead acid battery then ic gone over heat and this continuty i cheaked got result 16.68v . Then i stoped the charging and refresh . Again on the switch and voltage shows 12v . That neans heating the ic automatically ic is gone inactive . In this time if i used any device by this power supply due to over vault connected device will be damaged automatically. How can i keep my circuit safe while the output turn 16.68v to 12v while L7812 is inactive due to overheat ?

@JaviersDIY 2 жыл бұрын

I suggest put a bigger heat sink and put also an additional fan so that the temperature will normalize and I asure you that the IC will run in normal condition. Thank you

@studiotulip1556 2 жыл бұрын

@@JaviersDIY in the output section of L7812 which value of capacitor need to use that supports connected any 12v devices any "watt" value and never will be inactive ? ( L7812,2200uf,2 diodes 5408)