Questions tagged [arc]
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127 questions
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Using this mini welder for arcing for DIY Emission Spectrometry
I'm a chemist with a keen eye for spectoscopy/spectrometry and have several suitable machines.
I've been using alcohol/gas/gas discharge tubes flames for excitation but am looking for higher ...
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Snubber circuit not working
I’m using a solar powered water heater as a pre-heater into my regular water heater. The solar powered water heater is a regular 240 VAC heater with dual 3800 W elements that work in flip-flop mode. ...
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What breakers or switches are really needed on this solar setup?
I asked a question whether with DC breakers does polarity really matter?, that caught fire in the direction of whether at all to use those breakers or any breakers for that matter. The suspicion is ...
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Would this configuration of microwave oven transformers work to make a simple arc welder?
I know arc welders typically require 15-30 volts and 100-200 amperes to work.
I have two microwave transformers in which I have removed the secondary winding and wound 15 turns each of heavier wire ...
- 21
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Jacob's Ladder with 2 kV MOT inductance on microcontroller [closed]
A 2 kV transformer wired to steel rods exhibits expected arcing when the arc is manually started by shorting the rods with a length of wire attached to an insulted stick from a distance.
Getting the ...
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Why do electric arcs rise?
I am a junior electrical engineering student, recently we were learning about the circuit breakers and professor showed us a video of an electrical arc which can be seen in the picture (Sorry for the ...
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Smoothing arc shape in Altium
I was not able to find this topic on any official Altium documentation so maybe any of you could help me out. I have imported from other CAD tool bunch of outline shapes for NLP lines and I want to ...
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Snubber design for a relay that controls a 30W AC fan
I am trying to switch a 30W, 230V AC fan and a LED strip with an Arduino from D11 and D12 pins. In my previous experience, the EMI generated while turning off the fan bricked my project within months ...
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Can I put ferrite cores around the romex in my electrical boxes and breaker panel? [closed]
I've recently replaced most of the breakers in my house with dual-function arc fault/ground fault protection. (I spent five years in forensics, I'm deeply paranoid, don't judge me.) Naturally I'm ...
- 17.9k
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Arc Lighter: Relationship between transformer inductance, oscillating frequency and energy of the spark
I'm building an arc lighter using YouTube videos as a reference.
This circuit from GreatScott worked for me.
I'm now trying to understand the relationship between the transformer inductance and ...
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Will arcing occur if the two sources are isolated?
If I have two tracks on a PCB, that are 0.6mm apart, will the 230V arc across to the 3.3V PCB track?
The two supplies are isolated.
simulate this circuit – Schematic created using CircuitLab
- 3,030
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Can these timer switches (relays) handle DC or will they arc?
I'm looking to add timer functionality to a 12V agricultural project. It's to turn a light and heat mat on and off at the appropriate times.
I was kicking around eBay and found a few timer switch ...
- 221
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Arc jumping from high resistance to low resistance path
Trying to make sense of how to cut current on a high-voltage system without turning everything into plasma.
Specifically, I'm wondering whether you could reduce the current by going gradually (but ...
- 523
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Ignition coil circuit creates several hundred volts on metal case
I designed and built this simple ignition coil arc generator a while ago but I've never fully understood one of its properties.
It's just a 555 driving a MOSFET with some resonant capacitors across ...
- 455
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What is the current industry practice regarding the impact of current-limiting fuses on arc flash calculations?
Suppose you have a panel. The arc flash incident energy for this panel is computed based largely on the available short-circuit current (SCCA) to the panel, and the protective devices upstream of the ...
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