Questions tagged [spark]

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16 votes
3 answers
38k views

How far can mains voltage arc in air?

I wondered this while soldering a mains voltage circuit board and was surprised by how close together the traces were. It has obvious implications in design of electrical plugs, and the proximity of ...
M_M's user avatar
  • 293
15 votes
5 answers
5k views

Arduino resetting/hanging due to sparks in ac line

This is the PCB design of the project I have been working on recently (my first pcb design). The idea is to control ac appliances (fans, bulbs etc) without relays. I am using triacs which are better ...
Whiskeyjack's user avatar
  • 8,286
6 votes
2 answers
3k views

How can I prevent inrush current from causing sparks when I connect my project to a power source?

It is a common problem with my projects that when I plug connector in (DC connector to DC jack), sparks can be seen, although it hardly takes 10 watts of power. On commercial products, this is not a ...
Bhavya Gupta's user avatar
4 votes
1 answer
7k views

What would it take to spark through electrical tape?

Forgetting for a moment that wires can get hot, and that electrical tape can melt because of it: I've been wondering how much voltage/amperage it would take to spark through your standard house hold ...
Tyler V.'s user avatar
  • 253
5 votes
2 answers
998 views

Ignition coil arc initiation with protected low voltage continuation?

I'd like to initiate a spark plug arc with an ignition coil and then power the resulting (highly conductive) plasma with an ultracapacitor (low voltage, say 12V to 24V, and high current) without ...
James Bowery's user avatar
1 vote
1 answer
525 views

Can I pre-charge a capacitor to prevent a spark when connecting to battery?

I have a heavy duty, 62V, 600A continuous battery which I want to connect to an electric vehicle controller with a 5,2mF capacitor in it. To prevent a massive spark when connecting it, I am thinking ...
Simon Smith's user avatar
1 vote
1 answer
456 views

Noise from stun-gun based butane torch ignition spark is locking up ATmega328 microcontroller

I have a stun gun (http://www.amazon.com/VIPERTEK-VTS-989-Heavy-Rechargeable-Flashlight/dp/B00FPE6UN2) which I am using to create a large 1/2" electrical arc through the air to remotely ignite a ...
Gabriel Staples's user avatar
-3 votes
1 answer
4k views

arduino controlled spark plug with ignition coil

I am trying to built a ignition system which will have the following Spark plug Ignition coil (I don't know the spec of these. but this one is from Honda Activa) Some switching circuit I found ...
Derwin DV's user avatar