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How to make a Voltage multiplier

How to make a Voltage multiplier
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Hello everyone,
  This instructable will tell you how to make a voltage multiplier! So, lets get started :)

Here is some info about voltage multipliers if you want to know how they work. If not, then skip to the parts list.

Definition - "A voltage multiplier is an electrical circuit that converts AC electrical power from a lower voltage to a higher DC voltage by means of capacitors and diodes combined into a network." - Wikipedia

My definition - Voltage multipliers rectify low voltage AC to high voltage DC (pulsed). It uses a series of capacitors and diodes to simultaneously step up and rectify the AC to DC. Most of its uses are obviously applications that require high voltages...

     The type of multiplier we will be making is called a 'half-wave' multiplier. I think its the simplest, yet efficient for my purposes. full-wave multipliers are more efficient in the sense that, there is less ripple voltage. Basically, ripple = bad, bad = Less current and voltage out. A voltage multiplier consists of 'stages' each stage doubles the peak output of the ACinput. the more stages, the higher the voltage. In this 'ible, I only make a 2 and 3 stage multiplier because my breadboard isn't big enough to support that and its not even rated for that voltage anyway :P




PARTS LIST!
The following is the parts required for building the EXACT replica of my voltage multiplier. you can easily modify to your needs though. Like add more stages and stuff...

six 330VDC 80uF capacitors (you can get them from the single use cameras at wal-mart.)
seven 1A 400v (minimum) diodes (1N4004)
A breadboard, (or something to mount the components)
22 AWG jumper wire or just regular solid 22 AWG wire.
A wall wart- 16VAC or equivalent. (750ma)
misc alligator clips (for temporary testing)

Tools:
Multimeter (for testing purposes)
wire snips (to take off the insulation on the wire)

 
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Step 1NOTE!

NOTE!
I am not responsible If you get hurt/die from accidentally touching or coming into contact with the HV output!

Proceed to the next step to start building!
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30 comments
May 11, 2012. 5:20 PMerncar says:
Thanks for the instructable. I just made this with 450v 4.7uf caps and 3amp 1000v diodes. I used120vac instead of 16 and it puts out 750vdc+, my multi meter doesn't like it.
May 1, 2012. 2:12 AMDreistein says:
hey i'd like to make a device i can attach to say my foot ,that if i touch someone they would get a shock basically like when you walk with socks over a carpet but the effect is automated. A guy made an ible http://www.instructables.com/id/The-mini-electrostatic-generator/ where he makes what im describing but its not very detailed. any ideas?
Apr 24, 2012. 12:21 AMhore says:
hei, can i use your your project to supply power for my hot air soldering station.
Apr 26, 2012. 11:31 PMhore says:
Any recommendation to change it to AC power, i dont really understand how electronic component work sometimes, plus if i want to build this can i use power sources from battery.
Apr 2, 2012. 1:51 AMSarah23 says:
Hi,i am very new in electronics,and i am now working on device that requires high DC voltage range between 270 V - 440 V.We would like to make same thing as you did,however,it is quiet difficult to find certain specs as you stated.What we have now are 3 types of capacitors,which are,(200V,100microF),(200V,330microF) and (400V,100microF).Which one is suitable?Thank you.
Mar 27, 2012. 4:59 PMknexcreator17 says:
what im gonna do is to go to radioshack and buy some capacitors,diodes,and a 7.2 volt lithium-ion battery to make a circuit to run a 24 or 12 volt motor with at least close to no amps.hope it turns out good,and if it does,i am going to make an instructable and youtube video on it!my youtube user is: knexpert1700
Dec 14, 2011. 4:42 PMtom10122 says:
Can i use dc vin instead of ac?
Aug 11, 2011. 8:20 AMXOIIO says:
I think I have a 20 volt power adapter, would more stages mean more power?
Aug 13, 2011. 10:07 AMIntrepidelder says:
More stages does mean more voltage, but the ability to put through more amperage becomes more difficult. I assume that your input device emits AC voltage because a DC powersource will not attain the same effect. To know how many stages you should include; the ouput voltage is equal to twice the input voltage times how many stages you have. Or put as:

Vout =2*Vin*N (N being the number of stages)

if you have 20 volts in, 4 stages will give you 320 v, and 3 will give you 160.

In order to obtain 200 exactly i would personally put 4 stages; then put a few large resistors in series to obtain what you wish.

you could always use the wall outlet that puts off 120 VAC, assuming you live in the United States, then you would only need include 1 stage to obtain 240 V. That would require less components, but they would need to be rated for higher voltage; in turn costing you more money. ( only a couple cents more)

Good Luck! If you have any more questions just post!

-IntrepidElder
Dec 3, 2011. 12:26 PMJReynolds09 says:
I need to know how to turn 12-18v DC into 120v AC without the obvious choice of buying an inverter which is outta my price range. I have constructed a 26ga. sheet-metal geodesic dome in which I am mounting a solar array to obtain power to run my air filtration, evaporator cooler, and laptop. I can get by with the 12-18v on the filtration and cooler but not with the laptop. If anyone can help please email me at j.reynolds09@live.com I am not good with math so please keep formulas to a minimal and simple if necessary (dumb it down). Thank you and I look forward to a inbox full of thoughtful suggestions.
Aug 11, 2011. 8:19 AMXOIIO says:
What adjustments need to be made to put out 400 volts? An answer ASAP is greatly appreciated
Jul 28, 2011. 9:40 PMIntrepidelder says:
And i believe you can do without that extra diode at the end. it seems a little unnecessary since both the diode and the capacitor at the end put off positive charge, but then again this is coming from the guy that can't figure it out. lol
Jul 28, 2011. 9:32 PMIntrepidelder says:
I tried your same layout, as well as others, and my voltage is not doubling with each addition of a stage. my caps are500v rated and my diodes are 400 v rated. I am using the wall as my power source and with two stages i am receiving 310 v when i should be getting 500+. i was hoping you could help me troubleshoot my predicament.
Apr 13, 2011. 7:02 PMtechno guy says:
I though that electrolytic caps wouldn't work work in a voltage multiplier.
Mar 11, 2011. 7:17 PMemihackr97 says:
why do u use 330V caps, you only need caps capable of twice as much as ur ac voltaje, so 16 VAC (RMS) = 23 VAC (PMPO), that means that you only need 50 Volt Caps, 60, for security.

Bigger caps mean more expense and more space, just a tip on making it better.

Another thing, in the DC Output, you can connect a Capacitor in Parallel to make that DC (pulsed) into DC (regulated).

Good Project!
Apr 17, 2011. 6:55 PMnagasgura says:
Probably because you can get 20+ 330v caps at walgreens (or any other store that sells disposable cameras) for free! All you have to do is ask for all their recycled or broken disposable cameras. They even leave all the batteries in them!
Jul 20, 2011. 1:49 PMARJOON says:
where did you get them. i got mine in a photocopier
Mar 4, 2011. 10:41 PMjanesycamore says:
I am not really very good with the electrical things, other then plugging things into a wall. May I please ask what do you do with this after it is finished? Do you plug it in anywhere? Does it power more stuff? Does it suck more power from the electric company to do what ever it is supposed to,verses not upping the amps?
You are probably thinking I am a moron, I just have a hard time "getting" electronics. With my ADD the schematics make me woozy. LOL -seriously.
Thanks for humoring my brain.
Mar 3, 2011. 6:55 AMrtty21 says:
Very neat. How many amps can the HV DC supply safely?
Mar 11, 2011. 7:25 PMemihackr97 says:
this is easy to calculate, simply divide the AC HZ (50 or 60, depending on ur country) by the ammount of stages, then multiply that by 1,000 and that is the value (in microfarads (uF)) of the capacitor u need to use for 1 Amp, assuming that ur wall wart supports 1 amp, then multiply that number by the ammount of current (In amps, 400mA =.4) that ur wall wart outputs and then you get the value for the capacitors to be able to safely use all the current from ur wall wart.
Mar 2, 2011. 1:13 PMzazenergy says:
This is great! Thanks for sharing.

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Author:Mudbud(Mudbud Productions)
Let the future tell the truth, and evaluate each one according to his work and accomplishments. The present is theirs; the future, for which I have really worked, is mine. Nikola Tesla