How to make LM317 variable DC Power Supply with circuit diagram
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- เผยแพร่เมื่อ 12 ก.ย. 2020
- In this LM317 project, I have shown how to make LM317 variable DC Power Supply with the complete circuit diagram. I have made the LM 317 circuit on the zero PCB and also share the PCB layout so that you can easily design this adjustable power supply using the LM317 voltage regulator and Transformer.
Download and print the PCB layout on the A4 page from:
easyelectronicsproject.com/mi...
You can use this circuit as a lab power supply, motor speed controller, LED dimmer, etc
Required Components for adjustable power supply:
1. LM317 IC amzn.to/3hyP7Ba
2. 1000uF DC Capacitors (2no)
3. 10uF DC Capacitor (1no)
4. 100nF Ceramic Capacitors (2no)
5. 1N4007 Diodes (6no)
6. 5 mm LED (1.5V)
7. 220-ohm Resistor (1no)
8. 1k Resistor (1no)
9. 5k Potentiometer (1no)
10. DC voltmeter (optional) amzn.to/3kogZJX
11. Heatsink
12. Connectors
13. Zero PCB
14. Stepdown Transformer. (12V-40V) 1.5Amp amzn.to/2Rywtig
Current and Voltage Limit of this LM317 circuit: 0-40V and 0-1.5Amps.
For more details on LM317 please refer the following video:
• How to make Adjustable...
During the LM317 tutorial video, I have shown all the steps for making this DIY simple variable dc power supply.
Always take proper safety precautions while connecting the circuit with the 220V AC supply.
If you face any issue please let me know in the comment section.
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My special thx to you cause, your channel is complete with Gerber file, layouts ,diagrams , so on. Thank you very much I am from SRILANKA.
Thanks for this video dude... Literally saved my group's project at IIT Ropar
So what is it about did you all three coordinate to post the same answer.
Do you know the wattage of the resistor?
Thanks for this video dude… Literally saved my group’s project at IIT Ropar
🤣🤣
+😅
It's really odd to find a predecessor in such a place.
Unsure whether to be happy or embarrassed 😌.
Thanks for this video dude... Literally saved my group's project at IIT ROPAR
can you tell me how to give connection
Love the circuit thanks.
Very nice video bro I am planning to make this for my channel 👍👍
Hi Tech StudyCell. I hope you are doing it super well.
This video is perfect for me. Thank you so much for help us with it.
I have a question about how much current does this power supply give? I have been trying with 2 fans of 12v and 220mA each one, and it does not work with them. The current goes down over 120mA, and the circuit converts into a lm317 without the regulation resistors we the fans are connected.
Thank you.
what is the maximum voltage that we can input ?
Have you come to the 15 amp circuit?
Nice work bro.
How can l realize an inveter that has 3000 watts as power please?
Brother,
Can I use this same circuit for a 0-9v DC supply
With a 230v - 9v stepdown transformer?
Where can buy 100 nf capaciter things
Very nice and useful bro
Upload to ECE project work videos bro
Your lovely surya 😘🙏
Instant subscribe. All in this video is good to me. I also have a tech channel on YT and hope to make one of this one day. thanks
Hello could you share with us the schematic diagram of this?
How are you getting around 17v while using 15v step down transformer
Maximum voltage in or out
How to make +17/-17 power supply ckt using LM317?
Plz help
Hai hero u r great man...
Wah g kia dilog mara apnie
Hi i am trying this circuit but it's not working please help me find out what is the problem
can i adjust ampere ?
Nice project
Thanks
Is this a dual power supply??? Please reply
did you know the some Pritt Stick are conductive even when dry. (Don't ask how i know)
Can i replace tha 100nf ceramic capacitor with the 0.1uf ceramic capacitor sir
yes
Hello my friend
What should I do if I have 12.0.12 volt transformer 10amp
Sir, the 1000uF DC Capacitors are you using 35v or 50v?
you can use any volt above 25V.
current stays 1.5 at all voltages ?
1.5v is the maximum rating for the transistor .. the out would be also the 1.5v but remember to put a bigger heat sink
Hii i did this circuit but im just getting a 12.6mA whats the problem this is what i used
6 diodes like in the video
Lm317t
2x 1000uf 50v
10uf 50v
Ceramic capacitor 0.1uf
100r resistor(i change it because the voltage im getting is too low like 8v)
100k resistor
Step down Transformer 12v 2A
exellent veri qood👍👍🇦🇿🇦🇿🇦🇿
Thanks
Sir can we use a transformer of 0-30 v for the same circuit
And can we use 5 amp transformer for the same circuit
Will it work perfectly or will make burning
One component are missing sir. Voltmeter insert component. What is the component name sir
What voltage can I give Input voltage
I have used step down transformer. Secondary voltage 15V AC.
nice video
Thanks
It's not working!😭 Can you please help me with this after giving the input display is not showing anything and the led is also not working and there is ac output on both of the terminal can anyone help me with thiss
Where's the circuit diagram ?
Bhai dgtal mitar Kahan milega
And I just realised that just like me - all my batchmates out on YT hunting answers just one day before submission.
Bro can u make it without pcb board. Plz.
YES. but there is high chance of short circuit. And here I have used zero pcb which is easily available.
A 1 Amp transformer won't give 1.5 Amp but maximum 700 mA. A this heatsink you used is very small to dissipate high heat when voltage difference is higher and load current upto 1 Amp
Saya telah melakukan sesuai dengan video tetapi saat tes uji coba dioda 1 terbakar dan meledak? Bisa kah anda menjelaskan kenapa itu terjadi pak
Sir diagram send me plz
The circuit diagram of this power supply is confusing & also its not working
This circuit is not working 😕
What happens if i use 10 k potentiometer?
Bhai diagram glt bataya
need a 2 Amp transformer to get 1.5A output
As the max current rating of LM317 is 1.5 Amp, so I will not recommend 2 amp transformer.
@@TechStudyCell Why? I think you are forgetting the current utilization factor. You don't get 1.5A from a transformer rated at 1.5A at the rated voltage after rectification. Besides that running any component at max isn't recommended. One can safely use a 3A transformer but using an under-rated transformer is a bad idea.
Why don't you use lm317t, which is up to 5a
@@bravopapas4386 LM317T: 3-Terminal 1.5 A Positive Adjustable Voltage Regulator
Datasheet: 3-Terminal Positive Adjustable Regulator
This monolithic integrated circuit is an adjustable 3-terminal positive voltage regulator designed to supply more than 1.5 A of load current with an output voltage adjustable over a 1.2 V to 37 V. It employs internal current limiting, thermal shut-down and safe area compensation.
@@kennmossman8701 can you explain why he has used 2 capacitor in input and 3 in output.isnt one each in input and output enough?
Lm2596
Please reply
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