Questions tagged [spark]
The spark tag has no usage guidance.
130 questions
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Not getting spark from ignition coil test circuit
I have a simple circuit setup with an N channel MOSFET switching ground to a two pin ignition coil. I am not getting any spark from the spark plug in the coil. Could someone take a look at the ...
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Will Connecting Two DPST Switches in Parallel Cause Sparking or Light Issues?
Two DPST switches are connected in parallel (OR GATE). Will there be any electrical issues if connected this way? For example, if both switches are turned on at the same time, will there be any ...
user453218
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Sparking between pins of an electrolytic capacitor
I just replaced a faulty 22 uF 400 V electrolytic capacitor with an 33 uF 450 V inside of a 5.1 V DC power adapter. It supplies power for an old modem/router.
At first, everything looks fine. The ...
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Theory of high-voltage spark generators using pulsed transformers
I was looking to build a small electric spark generator and stumbled across this circuit or slight variations of it more or less everywhere I looked:
I am not entirely sure of the way it works since ...
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What should be distance (gap) between Pack+ input and GND?
There is a BQ4050 battery management IC and its reference design schematic. In the below image, there is a spark gap symbol I think labeled as E2, E3, and E4 between battery inputs and GND. I want to ...
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Unable to generate stable spark discharge
I am trying to generate spark discharge between 2 electrodes with an air gap of ~1mm. I am using the circuit shown here for the discharge. I did see some spark between the 2 electrodes but my diode ...
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Why does this arc die in the center?
I discharged a capacitor across the primary of an old microwave oven transformer. As expected, the transformer made a huge spark. I am generating the spark by charging a capacitor with a bug zapper to ...
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High voltage and lightning protection
I am developing an IoT device intended for use in agricultural fields. This device features an 8-channel 220V/3V3 (opto-isolated) system and includes an energy analyzer. Additionally, it incorporates ...
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555 Circuit for Spark Gap Lighter Not Functioning Correctly
I have a circuit designed and fabricated with the following schematic:
The specific 555 timer I'm using is a NE555DR.
However, when under power the circuit doesn't appear to oscillate and no spark ...
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Intrinsic safety (IEC60079-11) - assessing spark ignition of RLC circuit, but the L is placed before the zener barrier
My IS circuit contains an inductance, capacitance, and resistance. Shown below is the simplified schematic, with uncountable and countable fault applied, resulting in the most onerous condition:
The ...
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Spark gap alternative
I am building a simple Tesla circuit with a 50-100 kV transformer and capacitors, discharging through a spark gap into the circuit.
Is there anything besides a spark gap that would accommodate that ...
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How does a capacitor coupled voltage transformer (CCVT) and spark gap work?
What is the actual purpose of a capacitor coupled voltage transformer in a substation?
What I do know is that they offer low impedance to the very high frequency signal, so it does not get into the ...
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How small can a spark-gap transmitter be made?
How small can a spark-gap transmitter be made? Wikipedia's got plenty of pictures ranging from "desk-sized" to "room-sized", but those are mostly either early, inefficient ...
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Spark gap breakdown voltage vs gap area
I've been trying to design a 1 MV hydrogen gas spark gap.
I found the resistance of such to be in the range of 7 Ω/cm, not suitable for a target 40 kA current. Can I make the spark gap shorter without ...
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Why are SMD components not good for high power applications?
I have been using this capacitive power supply to drive a circuit (an OP amp and relay), but what I can't understand is that when I tried using an SMD resistor (R2) after some testing (turning on and ...
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Is it ok to connect a 10000 μF Capacitor to a lithium-ion battery directly?
I have a 24 V lithium-ion battery which will pump as Iᵐᵃˣ 40 A and I need to connect a capacitor directly to the 24 V battery which will be 10000 μF(10 mF).
The usage of it is to keep the system ...
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I don't understand this circuit intended for 'Spark Excitation' (for use in spectrophotometry)
I'm buiding a spectrophotometer for elemental analysis of rocks, minerals etc.
The optical part of the spectrophotometer is proving quite uneventful but in order to 'see' any elements in the sample ...
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How can I reduce the spark while connecting the battery?
I've been working on a drone that works on a 12S batter (maximum 50.4V.) I am using an Amass XT90 anti spark Connector to connect the battery to the power distribution board (PDB.)
The drone has an ...
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Spark gap minimum breakdown voltage vs air gap
I'm trying to calculate the minimum voltage needed create a spark across 2 electrodes (needle shaped) in open air at normal ambient pressure.
Usually, I would use the figure of 3000V /mm as the ...
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Will a spark gap transmit a signal an FM receiver can "hear?"
Forgive me if this question is a duplicate, I looked around but did not see anything that quite fit.
The scenario: I found a box of old FM receivers, the kinds used (I think) for assistive listening ...
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Voltage required for a spark plug - dielectric constant of air
The dielectric constant of air is approximately 3 kV/mm. The typical space between car spark plugs is between 0.6 and 1.8 mm. By multiplying those numbers in mm by the dielectric constant of air, we ...
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Stray voltages on home appliances in unearthed electrical system
Using a simple multimeter I have discovered around this home (what I may be mistakenly calling) "stray voltages", i.e voltage potentials across appliances' metallic parts that should not ...
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Spark between hand and laptop [closed]
When we walk in one of our office rooms, our body gets static electricity. When we touch a metal object such as a window or the body of a laptop, the tips of our fingers spark due to the discharge of ...
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I have 5 kV available to create a spark. Is limiting the current to 500 µA as simple as putting a 10 MΩ resistor in series?
Haven't worked with high voltage much before, I'm trying to use a spark gap to ionize some gas. I have 5 kV on one side, and a plate attached to ground on the other. The 5 kV will switch on as needed, ...
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Spark gap Electroboom
I was watching this electroboom video on emp devices and he showed this simple circuit.
My question was why is the spark gap in parallel with the coil? I know that the spark gap will act as a HV ...
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High voltage, high current pulse pulse power supply
How do high voltage high current pulse power supplies work? For example in electrical discharge machining (generating sparks that remove metal,) a single square pulse can be as small as 1 microsecond (...
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Sparking when using multimeter
I was trying to measure the voltage across two connectors that connect to a 3-pin, 13 A plug as part of troubleshooting, to verify I had circa 230 VAC present.
However, when I connected my multimeter ...
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Spark plug noise on power supply
I am working on a motorcycle diagnostic tool. Everything works fine except for the fact that when the engine is turned on, in some motorcycles spikes start appearing all over the circuit, and the ...
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Arc welding: Why is electric arc preferred over fire for welding?
Is it because arc has a higher temperature and more controllable?
Temperature of arc used for welding: 9000°F (5000°C)
Fire: 400°F- 9000°F (200°C to 4980 °C)
It is difficult to believe a spark ...
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Precharging my capacitor manually - looking for feedback [duplicate]
This is my plan, to pre-charge my capacitor of my electric vehicle manually, to prevent sparks occuring when connecting my heavy duty battery. The cables can easily handle 600A as well.
Im asking here ...
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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 ...
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Spark initiator combined with low-voltage, high-current follow on
I am aiming to add a spark initiator to my electric discharge machining (EDM) circuit, but I am unsure of how combine the high voltage (>1-10 kV) initiator and the existing lower-voltage, higher-...
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Strange Short Circuit
Can someone explain me how a 60V 5A power supply can generate that super hot arc (second circuit in the video)? I made the video, and no, there's no hack here, I'm just trying to understand what's ...
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Why did a spark occur between my HDMI cable and metal lamp base?
Edit:
Update 1/2/22 @ 2:27 UTC: outlet tester shows that all outlets and power strip outlets being used were normal.
Update 1/2/22 @ 21:07 UTC: performed various continuity tests which suggest to me ...
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How to measure the waveform of a piezo igniter?
Is there a (cheap) way to measure the pulse of commercially available piezoelectric igniters like those used in lighters or BBQ grills?
I use them as a cheap (and very crude, for sure) method for ESD ...
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Why does my old stepper motor generate a spark when connected to 1.5V batteries?
I stripped an old Epson scanner and found a 4 wire stepper motor inside (EM-489 from Minebea.) I decided to play around a little bit with it and measured that one pair of wires has ~2.9 ohms and the ...
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Safe measurement of spark voltages on a piezo-electric starter
I'd like to estimate the actual generated spark voltage on a standard home-use piezo-electric lighter used for lighting gas stoves etc. Judging by the maximum spark distance of between 1 - 3 mm ...
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How to avoid sparks over the load at high voltages?
I built a constant current source:
simulate this circuit – Schematic created using CircuitLab
When connecting SW1 it use to spark over SW1 contacts because output of OA1 was always clipped to ...
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Solid state relays with 555 timer for spark plug circuit
So here is the circuit that I have tried to make it work with an ignition coil to make sparks. What I want to achieve is a single spark from the input. This circuit does work but the IC 555 timer ...
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Question on spark gap transmitter circuit
I am trying to understand how basic electromagnetic communication works.
From what I understand, spark-gap transmitters were the first wireless devices made by man. A couple of circuits I found online ...
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Difference between the two circuits
I am trying to make a circuit for controlling a spark plug using 555 IC.I found two circuits on the forum which are very similar to each other but from what I have observed, they are using different ...
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Protecting capacitor from high voltage impulse spikes
The purpose of the circuit below is to produce an extremely high voltage impulse over the inductor so that I can place a spark gap in parallel to it and create a very large spark. According to ...
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plug light in without spark? [closed]
I have spotlights which go on 12V/24V distributor but every time I plug one in there is a spark, they still do work fine but it's a bit scary and just annoying when all the other ones flicker every ...
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I need guidance on designing a 2 kV capacitor charging circuit
I have to design high voltage circuit for the first time in my life.
Its purpose is to provide enough voltage to make a spark plug ignite a coal powder mixture.
There are some requirements for this ...
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Stopping flyback spark from inductor, but only some of the time
I'm currently working on a project designing an experimental engine control unit, which ignites a flammable mixture with a standard spark plug and standard ignition coil (the old style https://en....
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Can you turn AC into DC through a Spark Gap? [closed]
Is it possible to convert AC to DC using a spark gap as the medium, if so, could you provide a diagram?
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Reversed universal universal motor sparks and shows arcing even though brushes are completely perpendicular to the commutator
I need to reverse the rotation of the universal motor in question so I swapped the wires leading to the brushes and that successfully reversed the rotation, but now the commutator is arcing and is ...
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Electromagnetic radiation from spark gap
I am an electrical college student.
I learned from some papers, sites online, including this forum that lightning discharge or any electrical arc emits wideband radio frequency because the odd integer ...
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I have a problem with capacitor discharge in an ignition circuit CDI
I have a hard time understanding what the problem in this circuit is, can someone help please?
I have a Moped with its capacitor discharge ignition box. It works fine, the spark exist, but I want to ...
user270262
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How to Troubleshoot High Voltage Short/Ground (Furnace Sparking)
11/17 results: Manually turned on heat on the thermostat (you will know what I mean) - lit right up.
Thank you all yet again. I have heat...which I will be turning off at night and keeping a fire ...
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