Have you ever needed a 12 volt power supply that can supply maximum 1 amp? But trying to buy one from the store is a little too expensive?
Well, you can make a 12 volt power supply very cheaply and easily!
Well, you can make a 12 volt power supply very cheaply and easily!
I needed a 12 volt power supply for my project, the SSTC (Solid State Tesla Coil), and also made this instructable because it might be use full to someone...
Practical Step 1: Things that you will need..
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Required Componets and platform
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Practical Step 2: And the tools...
Things you will need to make this power supply are:
- Piece of veroboard
- Four 1N4001 diodes
- LM7812 regulator
- Transformer that has an output of 14v - 35v AC with an output current between 100mA to 1A, depending how much power you will need. (I found a 16v 200mA transformer in a broken alarm clock.)
- 1000uF - 4700uF capacitor 30V
- 1uF capacitor
- Two 100nF capacitors
- Jumper wires (I used some plain wire as jumper wires)
- Heatsink (optional)
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Needed Tools
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Also the tools needed are:
- Soldering iron
- Wire cutters
- Wire strippers
- A thing you can cut veroboard tracks.
- Hot glue (To hold components down and make the power supply physically strong and sturdy.)
- And some other tools that you might find helpful.
Okay, I think that is about it, lets get to work!
Practical Step 3: Schematic and others...
If you need a 5volts power supply, simply replace the LM7812 with LM7805
search Data sheet for LM78XX pdf on google
If you are going to pull out about 1 amp from this power supply, you will need a heatsink for the regulator, otherwise it will generate very high temperatures and possibly burn out...
However, if you are just going to pull out a few hundred milliamps (lower than 500mA) from it, you won't need a heatsink for the regulator, but it may get a little bit warm.
However, if you are just going to pull out a few hundred milliamps (lower than 500mA) from it, you won't need a heatsink for the regulator, but it may get a little bit warm.
Also, heres the schematic...
I also add in an LED to make sure the power supply is working. You can add in an LED if you want.
I also add in an LED to make sure the power supply is working. You can add in an LED if you want.
Practical Step 4: Make it!
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The Making
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Well, read the schematic and build the power supply!
If you don't know how to read schematics, you may search google for that or wait for post on it
Make sure you get good solder joints and no solder bridges, otherwise your power supply won't work!
Oh, If you don't know how to solder, read this great post! How to solder
Practical Step 5: Test it!
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Testing The Built Circuit
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After you had built your power supply, test it with your multimeter to make sure they are no solder bridges.
After you tested it, put it in a plastic box or something to protect you from shocks.
But do not operate the power supply like I did, it is very dangerous because of the mains voltage on the transformer, you or somebody will get badly shocked!
My power supply has 11.73v output, not too bad, I don't need it to be exactly 12v...
After you tested it, put it in a plastic box or something to protect you from shocks.
But do not operate the power supply like I did, it is very dangerous because of the mains voltage on the transformer, you or somebody will get badly shocked!
My power supply has 11.73v output, not too bad, I don't need it to be exactly 12v...
Practical Step 6: Finished...
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Tested ok DC Circuit
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You had built a cheap power supply! You can use it for what ever your needs...
But again do not operate it without any protection!
If you need any help, or questions, or any thing, make a comment or contact me on the blog's contact page.
But again do not operate it without any protection!
If you need any help, or questions, or any thing, make a comment or contact me on the blog's contact page.
abiola.johnson@outlook.com
theyoungengineerzz@gmail.com
WhatsApp +234-8079593532
1 comments:
Click here for commentshttp://www.circuitstune.com/2011/12/12v-power-supply-circuit-diagram.html that is the schematic diagram sir, can you send me a picture what would it be if it is in the pcb already?