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Questions tagged [spark]

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5
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3answers
238 views

In the recent Con-Ed transformer “fire”, what exactly produced the color of the huge blue glow over New York City?

Blue is often linked with technology (e.g. "big blue", glowing pools of water with Cherenkov radiation, aliens in general, Nobel prizes for blue LEDs) as well as traditional things like sparks. In a ...
5
votes
2answers
274 views

Any tricks for finding the path taken by small ESD sparks across a PCB?

A small ESD spark is able to find its way across my PCB at a relatively low voltage (low kV). It is not obvious which path the spark is taking and the sparks only jump when the board is sealed up ...
0
votes
1answer
38 views

Contact Switch Sparking

Wanting to know if the contacts in switch sw1 spark (see circuit diagram below), I did a simple test and found that there are no sparks even with high amperage. I am unable to explain why this is so? ...
0
votes
4answers
108 views

Multimeter, outlet and a Spark: the question of simple Voltage measurement

So I got a TekPower TP4000ZC MultiMeter. (Image source) It has COM port and two red ports: V-Ohm-etc. set at 600V Max and 500mA Max Fused 10A red fused port. Unlike other multimeters, there are no ...
0
votes
1answer
129 views

Controlling the Spark plug using 555 IC

I built the circuit for ignition system using MOSFET, 555, ignition coil(specs unknown. But current rating is more than 2 A and less than 10 A), SMPS(12 V, 10 A for powering the the whole circuit). ...
6
votes
1answer
112 views

Sparks on grounded metal bodies on lighting strikes in the nearby (two miles)

I have a strange phenomenon in our mountain cabin, on the Italian alps: lightning strike on the nearby (not so near: < 2 miles) causes audible / visible sparks on: electric / fire wood water ...
-1
votes
1answer
110 views

Why Arduino does not suit the to trigger a Spark plug but 555 timer can?

To trigger a spark plug and to control it using an Arduino, I tried following this really well-written guide. Basically, a MOSFET(IRF540N in my case) controls the closing and opening of the primary ...
-3
votes
1answer
450 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 ...
0
votes
2answers
72 views

How to prevent spdt shoot through?

I am working on a simple solar system for heating water. The idea is to use sun power and if not enough, use the power grid at night. I have a solar panel and a MPTT boost converter which collects the ...
19
votes
4answers
7k views

Do you need high voltage or current to produce a spark?

An electric spark can be formed when there is high potential energy between two conductors, right? My question is can a spark be formed with high current and low voltage or only vice-versa?
1
vote
1answer
36 views

Advantages of carbon wires for igniters?

I was troubleshooting the spark ignition on a gas oven and was surprised to discover that the ignition wire, which carries the high voltage to create the spark, had a carbon core instead of metal. ...
0
votes
1answer
193 views

Sparks when plugging in USB

I've created a simple controller with a nodemcu to connect a RGB strip that I had to the internet. The thing that happens is that when I go to plug in the nodemcu to my iMac(to power the nodemcu), I ...
2
votes
2answers
395 views

relay contact fails (suspect sparking)

I have a relay which is rated for 30 VDC @ 10 A or 28 VDC @ 10 A (which appears on this relay module) and I am running 12 V @ 6 A through the relay and this solenoid. After a short amount of time (...
2
votes
2answers
317 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 ...
-1
votes
3answers
139 views

Why is this switch sparking?

I have a Vega 650 power supply which does not have a power switch. So I wired a switch into the power cord. When I flip the switch, there is about a 1 second delay, then the power supply fan turns ...
0
votes
0answers
84 views

Suitable Capacitor

I am wondering what voltage rating I need for the capacitor in the attached circuit. Its basically the front end of a Tesla coil. The voltage source is a neon sign transformer 3kV open circuit at up ...
2
votes
0answers
239 views

Circuit analysis of a spark gap

I am confused about the action of a spark gap. I realize the gap is breached when the voltage reaches a critical point. But what happens to the remainder of the voltage? In the attached circuit the ...
0
votes
1answer
159 views

Extending length of wire where the spark is produced on a mini tesla coil

How can I extend / increase the length of wire where the spark comes from on my mini musical tesla coil? See my mini tesla coil below along with the quick connector I'm using to extend the wire with. ...
0
votes
2answers
579 views

Spark Gaps on a Tesla Coil

I understand the point of an LC circuit in a Tesla Coil: add an increasing amount of energy to the circuit with each cycle in resonance, but how does the Primary Coil complete this? Specifically, I ...
6
votes
3answers
551 views

Detecting sparks at the output of a high voltage flyback transformer

I was trying to generate plasma inside a cylinder for a hobby project, so I decided to use a flyback transformer from an old TV and drive it with a 555 timer as shown in the schematics. It solves my ...
0
votes
2answers
926 views

Spark Gap in EMP Generator

I recently got into eletronics, and there are some concepts I am having a hard time understanding. I was looking around youtube and saw this video of a small EMP generator, I understand the basics of ...
8
votes
4answers
5k views

Measuring current with a multimeter - What did I do wrong?

I wanted to measure the current of a generic lithium ion battery charger. I set I plug my red lead in the A 10A max fused and black into COM. The charger is rated at 600 mA and my other lead plug ...
7
votes
3answers
7k 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 ...
0
votes
1answer
192 views

Make high voltage spark travel further?

Okay, so I have this piezoelectric barbecue igniter so that I can make a remote igniter. The problem is that if I add a length of wire the spark becomes very small. Is there any way to make the spark ...
-1
votes
2answers
6k views

Why do cables not arc/spark when being removed or reconnected on a car battery terminal? [closed]

For example, when removing a car battery, the negative cable is to be removed first and reconnected last, but why does it not arc/spark in any of those scenarios? The circuit is complete, so why isn't ...
0
votes
2answers
645 views

Get a spark plug to spark with DC

thanks for giving a look on my question. I bought a spark plug, a 12v 5A power supply and a ignition coil (gy6, from a Chinese store). I've searched some schematics and tried to understand how will ...
2
votes
1answer
165 views

Oddly placed spark gap? Samsung phone charger (ETAOU10)

I was bored one day so I took apart an old (as in no longer needed, late 2013) phone charger. Everything looks well designed except for the spark gap between neutral/live and the low-voltage side. ...
4
votes
5answers
534 views

Contact sparking even with flyback diode

I'm building a circuit to measure both voltage and current given to a solenoid valve 24V DC 15W. In parallel to the valve is a voltage divider with 470k + 100k Ohm resistors. In series with the valve ...
1
vote
0answers
396 views

Spark minimum current

I know from the title may sounds wired. But it makes sense to me at least for my restricted knowladge of high voltages. I'm allways working with low or house voltage as well as this question may refer ...
0
votes
3answers
393 views

Spark Plug/Ignition Coil: DC Pulse

If you have the following circuit with a step up voltage from L1 to L2, then when do you get a spark across the spark plug? I have three scenarios. Scenario 1. You have the switch open, then you ...
1
vote
1answer
115 views

Ignition System Question [closed]

I'm wanting to build this circuit. Here is a link https://www.youtube.com/watch?v=__FRCSvEYdE which talks about it 6 minutes in. If I have a 6 volt dc battery what farad capacitor should I look for? ...
1
vote
1answer
5k views

AC Voltage to Spark Plug

To get a spark plug to fire I read that it requires approximately 12,000 Volts. If I have an ac generator giving a RMS Voltage of about 10 Volts (pretty small) what do I need to do to get the spark ...
1
vote
2answers
143 views

Circuit to prevent spark from plugging Li-po batteries into motor driver with filtering capacitors

I have a motor driver that handles 2 150watt motors powered by 2 Li-po 12V batteries (connected in series). Obviously, I need filtering caps on my driver so I used 2 1200uF caps connected in parallel. ...
1
vote
1answer
338 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 ...
0
votes
1answer
1k views

Why did sparks fly when testing outlet frequency?

I'm using a multimeter (Mastercraft 052-0052-2) and I decided to see if the frequency of an outlet would read 60hz. I switched my multimeter to the FREQ setting and plugged the RED test lead into the ...
3
votes
1answer
333 views

Where to put a spark gap for ESD protection--to an isolated “GND” or to protective earth?

I am designing some PCBs for a system that runs on a fully-isolated DC power supply. I have three power inputs: Protective earth (connected directly to the line earth of a three-pin US 120V AC power ...
2
votes
3answers
774 views

Is an SPDT switch spark-free?

Question Will this switch spark when it is switched? Intro I am currently working on a electric longboard and I came across this problem. I have a LiPo battery providing power to the motor through ...
-4
votes
2answers
209 views

How do I open a grill ignitor? [closed]

My grill rusted apart, so I decided to salvage the spark circuit. But there's a problem - I can't find the polarity of the ports, and I can't open up the blackbox. http://i.imgur.com/BXqiQjP.jpg How ...
1
vote
1answer
389 views

Spark with 5 volts to solder (weld) tin

I recently visited a factory in China and saw people soldering headphone pins with a soldering device that gave sparks, melting the tin. The soldering iron was hooked up to a device and the pin was ...
3
votes
1answer
7k views

Have I broken my Multimeter?

Firstly, I'll answer my own question by saying that I don't think I have broken it. However, is it possible I could have? (and also possibly, the power supply I was testing). I am quite new to ...
1
vote
1answer
274 views

Safe use of high voltage in laboratory environment?

I'm completing a project in the lab that requires a spark. As such I've acquired an ignition coil and can use the Lab's standard 12V DC power supply that connects to the 240V AC Mains to power the ...
0
votes
1answer
612 views

How does an electronic shocker works?

I'm new to electronics but I want to make this diagram from "Instructables" : I have everything I need from a camera... I also realized, using a different transformer, that the sparks are made only ...
0
votes
2answers
2k views

Capacitor quenching circuit across Brush and Commutator of DC motor

To reduce the spark between brush and commutator segment there is capacitor and resistor spark quenching circuit is placed between each commutator segments. please find below images for detail idea ...
15
votes
5answers
4k 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 ...
3
votes
1answer
3k 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 ...
2
votes
3answers
12k views

Where do small gas engines get the current for their spark plugs?

While technically not an EE question, until StackExchange adds a regular Engineering section, EE was the closest fit. On small gas engines like those in weed wackers and lawn mowers, where do the ...
1
vote
1answer
576 views

Modeling Capacitive Discharge Ignition (CDI) Circuit

I am trying to model a capacitive discharge circuit (see Fig. 1 below), but I'm having difficulty properly coupling the two inductors on the transformer and also estimating the energy dissipated ...
0
votes
1answer
508 views

Determining Voltage and DC/AC from Wiring Diagram for Spark Door Buzzer

I'm looking to use my Spark Core to control my door buzzer in my apartment. I'd like to identify the correct parts I need to build the required circuit, but this seems to be dependent on the voltage ...
13
votes
1answer
3k views

Why is Ethernet not intrinsically safe?

I understand from a training session that ProfiBUS is considered intrinsically safe, while ProfiNET is not. Some googling indicates that ProfiNET can never be intrinsically safe, because Ethernet can ...
1
vote
2answers
214 views

What components can be damaged through 10KV ESD?

I'm designing a circuit which has Voltage regulator(IC), current source(IC), resistor, capacitors, LED, reed switch and capacitor. It has to survive 10KV ESD event. My question is: 1) What components ...