High voltage ignition coil supply

In this Instructable I will teach you how to build a High voltage power supply using an Ignition Coil.This project uses a 555 timer based circuit.We use a 555 IC because an ignition coil needs a squire wave signal to power it. so basically the 555 timer is making pulsed DC electricity which powers the ignition coil.

Step 1 Danger High Voltage!!!

This project shows how to make a High voltage power supply which produces about 30 or more MA, which is enough to Kill you! so Don't try this if you are not experienced with high voltage!

Comments

[wolf996]

I've Been Super Shocked And I Was Like Pikachu For A Few Days I Touched My Friend In The Neck And Burt Him Thank You For Electifiying Me

[techno guy]

This doesn't work, I already fried 3 555 timers because of how the negative is connected to the chip and the high voltage goes into the chip and fries it.

[Techno Dude]

Just yesterday I got an 2n3055 transistor but then also the ignition coil dint work can some one pleas help me?

[TeslaBoy]

try flipping the polarity on the auto coil (its wrong in the schematic)

[Techno Dude]

I am trying ti build a tesla coil ,but today when I tried your driver circuit but instad of 2n3055 tranisistor i used an irfp250 transistor it dint work. what do u think I
have to do

[ARJOON]

i used an irfp250 instead for the 2n3055. i got far much bigger spark and also when i used 32v of input to the mosfet the ignition coil was sparking to the concrete. the was super crazy. like a tesla coil. haahahahaha

[jesteract]

I agree on your choice for using IRFP250n as not only a mosfet has a better rise/fall time in other words is more capable for fast switching, but it also incorporates a flyback diode for protecting the drive transistor from back EMF blowing all the circuit to nothing. A steering diode at the supply input would also be a wise idea to protect the circuit and improve commutation.

[bswt]

can i use a IRF510 Transistor

[ARJOON]

it think it should work

[yamaha_dodge]

becuase it basically is a mini low voltage tesla coil If you think about how it wroks they are both very similar.

[josh1324]

I noticed the coils negative terminal is connected to positive, and vice versa, is it supposed to be like this?

[cdousley]

and does it matter if i get a capacitor with i higher voltage rating

[takide]

a capacitor with a higher rating will work just fine too. the rating on a capacitor just shows the maximum voltage it can handle. if your voltage is above it, your capacitor is gonna break.

[S33PlusPlus]

Don't you mean explode, smoke, or spray electrolyte all over the place? :P
Capacitor smoke is a smell that lingers around the workbench long after the cap dies.

[takide]

yes, yes it is.

[safetec]

I have a question: Can the 2n3055 power transistor be replaced with any other transistor? and also can this circuit be run using for example a standard 9V battery to produce a little less current? Is there anyone out there that can perhaps propose a circuit using a cellphone charger's transformer to boost the V output?

[S33PlusPlus]

The power transistor is probably there due to the inductive kick when the magnetic field in the ignition coil collapses. Or it could be the frequency it's switching. I've had problems with a 555 switching a camera flash transformer with a generic 2n2222 NPN signal transistor. The tiny little plastic case can't dissipate heat (well, not much anyway) and ended up melting on me.

[takide]

do you know what the operating frequency of the ignition coil is?

[cdousley]

can i use less than 6 amps i know i wont get as high of a voltage but i wouldn't want something this powerful until i had some more experience.

[highvoltageguy]

u get ignition coils the same way as i do i have two

[ge6aaaa3]

How can i make bigger spark?

[hinmung]

can replace the car ignition coil with motorcycle ignition coil ??? and any bad things happen such as the 555 timer explosions.

[bcantley2010]

a motorcycle needs roughly the same voltage too and no changing the coil is not going to blow the 555

[mbainrot]

You do know that the image on step 1 is in breach of copyright?

http://www.powerlabs.org/highvoltage.htm is the owner of the image, you've just cropped it so the "(C) http://www.powerlabs.org"

Do you have permission to use that graphic?

[ARJOON]

what can i do if i want 400v from it

[Jimmy Proton]

you cant get 400v from it, its a high voltage transformer

[gafar musa]

wow,this is interesting but am thinking of 1 how to measure d output, 2 how to use this circuit to power electronics or two or more bulbs. is d output voltage AC or DC?.
Any one with idea should help me send d contribusion to [e-mail]

[carebare47]

When I run this the transistor gets hot very quickly, and the spark generated is minuscule and only happens every second or so. Any ideas?

[electronic boy]

on car ignition coils there is always a special capacitor called a condenser and if u add this to ur circuit and put a heat sink on the transistor then you will have a good high voltage power supply

[electronic boy]

(removed by author or community request)

[electronic boy]

(removed by author or community request)

[electronic boy]

(removed by author or community request)

[N3v3rm0r3]

How do you connect the power transistor? It has two pins and I don't what they are for. Also, is it my idea, or it lacks a pin?

[skuitarman]

the other conection is the transisters metal cover

[N3v3rm0r3]

thanks, the two pins are the collector and the emitter of the transistor and the cover the base?

[coolfordy]

http://www.jaycar.com.au/products_uploaded/2N3055-D.pdf this has a diagram of what is what on the transistor

[coolfordy]

how many watts are the 10kohm pots rated for ? and what would be the best diode to prevent kickback?

[joinaqd]

can it light up a strobe light from a disposable camera??

[Plasmana]

Yes

[-max-]

not as u would expect from it though...   it would look like just a bunch of small sparks inside.