How to Build 12 volt power supply or transformer at home by using ac transformer
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!
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...
Things that you will need to make this power supply is...
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
1uF capacitor
Two 100nF capacitors
Jumper wires (I used some plain wire as jumper wires)
Heatsink (optional)
Also you will need the tools to make this power supply...
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's about it, lets get to work!
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.
Also, here's 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.
After you had built your power supply, test it with your multimeter to make sure they are no solder bridges.
After you test 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!
How to Build 12 volt power supply or transformer at home by using ac transformer
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!
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...
Things that you will need to make this power supply is...
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
1uF capacitor
Two 100nF capacitors
Jumper wires (I used some plain wire as jumper wires)
Heatsink (optional)
Also you will need the tools to make this power supply...
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's about it, lets get to work!
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.
Also, here's 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.
After you had built your power supply, test it with your multimeter to make sure they are no solder bridges.
After you test 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!
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