Simple and Small Full-bridge-rectifier




About: I am 15 jears old and from Austria near Germany, i'm interested in electronics chemistry and physics. I do my best to upload some great Projekts which you hopefully like.

In this instructables I show you how tu build a super simple full bridge rectifier.

If you have an AC power supply, but you need a DC Voltage, you can simply take this rectifier, connect it to your AC power supply and you are done.

Also: If you´ve already earned some skills You don´t need to follow the steps in the exact sequence. I´ve uploaded the schematic to allow skilled people to design the board on their own.

Step 1: Things You Need


2 screw connectors


a 1000µF capacitor

a small piece of perfboard

and a bridge rectifier


soldering iron



Step 2: The Schematic

The schematic is quite simple just make sure you connect the capacitor the right way arround otherwise it may burst.

Step 3: The Output

Take your connector and solder it to one end of the perfboard.

Now take your capacitor and solder it parallel to the connector.

Step 4: The Rectifier

Take your bridge rectifier and put it next to the capacitor. Make sure that the + and the - output are parallel to the pins of the capacitor.

If you use an electrolytic capacitor, doublecheck the polarity.

Now bend the wires of the bridge rectifer as shown in the pictures.

After bending the wires solder the output wires of the bridge rectifier to the capacitor and the screw connector like shown on the pictures.

Step 5: The Input

Now take your second connector and place it next to the bridge rectifier and solder it in place.

After that it is easy to connect the wires of the rectifier to the pins of the connector. Just make sure, the two wires don't touch each other!

Now you are done !

Now you can easily connect an AC power source to the input of your rectifier and you will have DC on the output.



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    13 Discussions


    2 years ago

    Just a quick comment to point out that there is a minor error in your schematic.

    The positive (+) output of the bridge rectifier goes to the negative (-)
    side of your capacitor. A simple enough error to make, and even easier
    to correct in your schematic. (Just move the '+' to the capacitor's
    bottom conductor, or flip the capacitor symbol vertically)

    This is a great 'ible that will be helpful to many beginners of electronics, but this small error could be problematic for them.

    - - - Edit - - -

    the capacitor specified in the schematic and in the Parts List is
    "100uF", which seems to contradict the 1,000uF you've used on your
    board. Choosing a 1,000uF capacitor would be a much better choice in
    most cases, in addition to reducing the ripple, it would be more capable
    of supplying the short, transient bursts of high-current whenever the
    load requires it.

    3 replies

    Reply 2 years ago

    Mistakes fixed :)

    by the way are you german? because you wrote Also


    Reply 2 years ago

    Hi Tech...

    No, I'm not German. However, I'd love to know how the word "also" hints to you that I am. The system seems to have placed this single word apart from the rest of the paragraph without much of a reason for doing so. Is using that word by itself some sort of Germanic practice, or does it have a significant meaning when used in that language? Very curious about this though.


    Reply 2 years ago

    In German also is like so. An because It is apart from the other text I thought that you mean " so the capacitor...." beacuse I thought so i´ve totally forgotten about the english word also :)


    3 years ago

    please provide the schematic circuit diagram...or circuit diagram

    1 reply

    Reply 2 years ago

    I´m sorry, I have not seen your comment.

    I´ve added the schematic in step 2


    3 years ago

    Sorry - I was trying to ask what the max load you can put through this rectifier is. 6V, 10A or 60V, 1A or maybe 230V , 0.1A?

    1 reply

    Reply 3 years ago

    Sorry i just now that mine can output max. 2 Amps.

    But of course you can try to use any bridge rectifier you want.


    3 years ago

    I like this, every time I want to cobble together an experiment, I usually hunt up parts for the power supply too, this just takes one step out of the process and is entirely reusable, nice job!