AC to DC Converter=diode Bridge

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Introduction: AC to DC Converter=diode Bridge

A diode bridge is a device that changes Alternating Current(AC) to Direct Current(DC). The difference between these two kinds are that, AC is pulsed electricity switching polarities 50-60 times per second.(If you look at electronic devices it says that it runs on 50 Hertz AC)Switching polarities= - to + and + to - 50 times in a second.DC is a continious current coming out.Example batteries.The polarities do not change in DC.The problem with AC is that you cant charge batteries with it.

In this instructable i will show you how to make a diode bridge.

(NOTE: This is not an instructable about how to charge batteries.If you are going to use the device, use it correctly.
For Example DO NOT PLUG IT IN THE POWER OUTLET AND TRY TO CHARGE YOUR BATTERIES SUPERFAST!THE BATTERY MIGHT EXPLODE AND CAN CAUSE INJURY OR DEATH. USE A CORRECT STEP STEP UP,DOWN TRANSFORMER IF YOU KNOW THE VOLTAGE RATING)

Step 1: Materials

A: 4 diodes(black ones)

B: 4 wires (2 for AC input 2 for DC output)

C: AC source (NEVER USE POWER OUTLET UNLESS YOU KNOW WHAT UR DOING, OR B: YOU ARE GOING TO DIE WITHIN 2 HOURS BECAUSE OF A DISEASE)

D: Pliers( if you dont have any,buy one or rob it from someone)

Step 2: Twist the All the Diodes' Legs Around Each Other

Get 3 diodes and twist them together striped sided on the bottom, except for the last one.The last one you reverse the striped side.

ARRGH!I cant explain with words!Look at the pictures below!After all, "A Picture is worth a thousand words", so said a person a long time ago.

Step 3: What to Use It For?

i dunno...i use mines to charge my 10 volt batteries.you can use yours to do other stuff...use your brain!!!think of something!(Ex:use a step up transformer to charge Capacitors and make a welder?)whatever..im too tired.(yawn).good luck making it.some pictures below to show that it works.Goodnight.....(snore)...(snore)...(snore)...(fart)..

2 People Made This Project!

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141 Discussions

nice job

i am making electricity producing footwear using piezo discs

piezo produce in ac but to use in dc with this cool circuit

thanks very helpful

1 reply

did you complete the amking of shoe from piezo disc did it work? if not i can help and if yes pplz review

Thanks for such a simple diagram. I am working with a circuit for a little project, but I did not have a bridge rectifier handy. I have lots of diodes I have pulled from old electronics, and this has allowed me to do some testing on my circuit. Thanks.

This circuit simply converts the input current (A/C) to a output current of (D/C). Like converting mp4 to mp3. If someone wants to get a current of 2.3vDC from the output terminals he/she has to input the same amount of A/C current through the input terminal.

hi,

I need an output current of 2.8V and a variable current varying from 15 to 25 to 35 A from an input of 220V Single phase supply. Plz draw me a small diagram on how to do this. God Bless u

how to convert 110v ac to 220v dc? need asap. pls. thank you ;)

Is this attached circuit works fine? Any modifications need to be done.... Help me out in choosing the values of resistors & capacitors. Thank you

DSC_0385.JPG

thanxxx dude.....this really works......helped a lot

0
user
SamH81

2 years ago

Thanks for the post. I am trying to test motors from 240 V AC appliences (e.g. a motor from a washing machine) using DC batteries at a safe voltage would this diode brige be safe to do this.

0
user
SamH81

2 years ago

Thanks for the post. I am trying to test motors from 240 V AC appliences (e.g. a motor from a washing machine) using DC batteries at a safe voltage would this diode brige be safe to do this.

1 reply

No, you would need a circuit to produce a 60 or 50hz sine wave at whatever AC voltage you want. what application do you need to convert DC to AC for?

What is the output polarity of the DC current?

I just get artictle about <a href="http://911electronic.com/tunnel-diode-characteristic-symbol-definition/">tunnel diode</a>, if you need to get more information about this electronic device check this.

converting AC TO DC the voltage increased 1.414 time of given ac supply to the recifier circuit.it is done in practical.so24 volt AC supply after rectifiying it give 33.9 volt.

Mine is acting weird, I used a Step Down transformer, from 220 to 24V and 5A. But, it is providing 11-12 A and 40 V, what to do? I used a capacitor to smooth out the output. Please help, I need it to run motors for testing purposes

2 replies

a voltage regulator should be used, first charge a battery, then run your motor from the battery if you need precise control

if you look up a ac to dc converter it will work better. you will need a transformer to decrease the ac voltage, then the rectifier, next a smoothing capacitor should be used (look up the correct size), a voltage regulator can be added for a specific voltage, a voltage regulator can be used in combination with resistors, capacitors, and a potentiameter to create an adjustable voltage, current is more difficult to adjust.

Actually its not such a good idea to connect this bridge rectifier directly to 220 volts AC,because the system will develop too much heat which is really undesirable and can cause damages.Usually such bridges are used after the mains voltage is stepped down to a lower voltage.But if you really want to convert 220 VAC to 220 VDC,be specific to buy diodes rated for use with higher volts.