Ignition Coil Driver & Tester (555 based) 

Adjusting the POT will allow the mosfet to only be warm using the same coil that I used.

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Thank You!

Actually it's excellent for a coil tester. Resistance measurements won't tell you if the coil winding is breaking down due to the HV. With the tester you can see if the coil is able to produce a nice spark.

@@electronicsNmore the timing circuit and ability to change the frequency will be great for testing an automotive coil. Calculate the firing frequency at a specific engine RPM and use a capacitor to match that frequency on the test rig. Use an adjustable Gap spark tester and you be able to tell if your spark is breaking up at a specific RPM.

You're Welcome!

Very useful that solder pot. :-)

I have a very cool HV project coming up in 2 weeks using this driver.

electronicsNmore Hi, I will look forward to it. Really like your channel. Take care, C.

You're welcome

Glad you enjoyed it! Around 50mA. Be sure to share the link to this video on social networking sites, and check out my extensive video playlists for many other videos of interest to you. Thanks!

555 is the most famous chip ever designed.

I don't see a reason, but there must be a reason for it. I didn't design that circuit. Thanks for watching!

This circuit would be used to test ignition coils for proper operation, not the plugs.

+electronicsNmore How then can i test plugs? I want to understand what is the spark, if the spark plug is running on engine?

You'd need to be able to quickly switch between different caps.

I was thinking that was probably the answer, several caps switched with a microcontroller. No point really, just a bit of fun.

use pin 5 of the ne555 to send amplified audio signal to it with a 3w amplifier

You can combine it with the device I designed below. Instead of triggering the door, have it trigger the coil connected to 2 plates. Thanks for watching! ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Uci3WSozdgE.html

The current output is very low, "Usually", not enough to kill. You can use this for a fence, but I would reduce the input voltage for a less painful shock. Be careful, and use good quality insulators. Make it at your own risk.

I made a ignition driver circuit a while back based solely on a relay wired to self-oscillate. The coil of the relay was placed in series with the ignition coil, and the normally open contacts were connected across the relay coil so that when current flowed, it would activate the relay and then the relay contacts would close, allowing current to flow through the ignition coil contacts. Shortly after the relay contacts would reopen and because a

Still going strong. :-) If it does fail, I'll swap it out. Thanks for watching!

@@power-max ... which is why in the traditional points-coil ignition there is a capacitor across the points.

Refer to the link in the video description area. If you need electronic parts or any other items, then please visit banggood4less.com. Use the code "affiliate6" to save money.

Connect two 12 volt batteries in series to feed the coil 24 Volts. The brave and cautious could rectify the line voltage to see if the coil windings would withstand 120+ volts. That don't rectify the line voltage and feed the coil with 12+ volts AC. In the event the smoke stays inside the coil with 1200 line volts try 240

Hmm, not resolution. Boosting ignition coil can have bad results. Connecting two ignition coils on two drivers like: One driver is connected to first ignition coil like positive-negative and another driver going negative-positive connection (opposite connection terminals than on first). Connecting plus from first ignition input and minus from second ignition coil input giving serial connection. On this way one ignition coil became positive and another ignition coil becaise negative and potential difference between two ignition coils (center output terminals) will be doubled 20kV+20kV....

Thanks for watching Charlie!

Hi there. 1/4W

Yes

As much as I'd love to help you, I just don't have the time. If you have one or 2 simple questions, then no problem. Thanks for watching!

As long as the power supply is able to supply the current. Why measure the output?

eNmore, Many times people ask me to build them electric fences or even farmers want this to control their cattle and if the output voltages are too high it become a problem. O key, one can control this by the length of the arc, but i still wonder how much the voltage really is.

SODA510 - Most electric fences are "pulsed output" so that in case a human should touch it, they would be able to let go between pulses. Also, some just store a charge to give the animal a shock and then slowly charge up again when discharged. The latter of those are usually the solar type. Considering the cost of posts, wire, insulators, warning signs, etc., the cost of a commercial electric fence controller is minimal. You're walking into nothing but trouble by making home made equipment like that. If someone were to inadvertently touch your creation and get hurt or killed, you would surely get sued, let alone how you'd feel if your device killed or hurt someone. Commercial manufacturers take into account that a human may touch it and work that into their design. (Pulsed output, known voltage and current output, etc.) Even then, they can still hurt people or possibly even kill them if they have medical conditions or implanted devices. I know you want to help your friends out, but this is something that you might want to think twice about. Just some friendly advice. :-)

No, they cannot supply enough current.

Goto 4:24

I don't think it would ignite easily, but you'd probably get burn marks.

@@electronicsNmore I've set up the schematic you sourced on a breadboard, and can't seem to get it to work. If I'm correct, the positive lead of the ignition coil connects to the positive rail, the negative lead of the coil connects to the 1N4005 diode, and the arc should occur between the center terminal of the coil and a ground connection?

No, they have far bigger fish to fry. 🤣

Ok

It's wedged between the outer edge of the internal metal sleeve and the plastic housing. Thanks for watching! Be sure to watch my "High Voltage" video playlist and share.

😀

As long as the frequency is high, and you're driving a transistor or mosfet to handle the current, it should work fine.

Refer to the link posted in the video description area.

I don't know what you mean by "liquid", but I built a circuit that runs a few tens of khz in an ignition coil, it seems to create a steady hot stream of plasma instead of a series of sparks.

@@deltab9768 do you mean Distribution Cap of automobiles, Or Do you mean Magneto Pull Start? Or magneto push start? Liquid? That word defines itself :)

It's similar to the coil shown here, just smaller. It was from a single cylinder engine with a battery driven ignition system. No, the spark isn't actually liquid, I've only tried making arcs in air. I think in water, the electricity would pass without actually arcing. There is a video of it on my channel.

@@deltab9768 what's the part and model number of the single cylinder engine w/battery driven ignition system?

I don't know, to be honest. It was a small generator, which had been abandoned in a seasonal pond, and shot full of holes. The coil was intact, but rusted and had no label on it. I think any ignition coil that has an iron core sticking out both ends, should work with this circuit. Also, any coil that has a core which loops around the outside might work, if you wound the "feedback coil" in the right place. The fully enclosed ignition coils like the one electronicsnmore has, may or may not work, depending on whether the core has an internal loop, and depending on whether or not the case is metal.

Been a while, but at least 1A.

You must've used 1A rated wires.

The ignition coil feeds the distributor, not the spark plug. The distributor is what feeds the spark plug. Newer vehicles don't have distributors since the firing circuit is computer controlled, therefore the ignition coils are feeding the spark plugs directly.

Marc Freeman Thanks for your explanation. I must see how a spark plug can convey a coming spark !

The spark plug creates a spark in the combustion charmer thereby igniting the air/fuel mixture, pushing the piston down to turn the crankshaft

waswestkan So helpful. Thanks ! Could you plz provide a link showing the ignition system in the car. I am so interested in producing a spark to light up my gas oven. I want to use the same a spark from a spark plug as in the car :)

That is way too much trouble! Just go get a pizeoelectric igniter off the web. That is what is used in BBQ gas grills. It produces a spark with either a 1.5v battery or just the push of the button. Using a spark plug you would need the coil and battery.

They work good, especially as a back EMF high voltage generator, but the contacts don't last too long due to arcing.

And what?