Drop that.lukakopa7 said:
Not necessarily. A step-up auto-transformer used in flyback mode keeps low voltage on a button switch and high voltage on the arc. The trick is to choose the inductance and Rs on the primary to limit the current. The breakdown voltages and gap must break the holding current so it does not persist when released. The 25kV means it can generate at least an arc of 25 mm under humid conditions of 1 kV/mm. Winding capacitance and high permeability cores can degrade the voltage, so often air coils are used in furnace gas igniters.Rive said:
Humm... guess I not a smart as I thought.DaveE said:
If a '25kV transformer' pops up in these kind of suicidal type DIY projects then it's most likely some tesla coil or a salvaged piece of hardware from an old TV set => both are useless and just dangerous.TonyStewart said:
Well, as long as that 25kV stays, I sure won't provide anything but solid 'don't do that'DaveE said:
It's about all the readers.TonyStewart said:
TonyStewart said:
Hi. I m building jet powered rc plane and i need source of constant ignition.TonyStewart said:
Welcome to PF.lukakopa7 said:
I would look for motorcycle ignition systems, then: with the high voltage parts intact and untouched, safe.lukakopa7 said:
Im using mixture of liquid butane and methanol. Yeah but device has to be small and light.Baluncore said:
Yes but it is much heavier.Rive said:
Then a mower, chainshaw or such.lukakopa7 said:
Laser diodes are small and could produce a wavelength that would be strongly absorbed by the fuel, resulting in ignition.lukakopa7 said:
I already tried glow plug from old Volkswagen golf but it uses much more power and when it got hot it melted all cables.Baluncore said:
I already tried glow plug from old Volkswagen golf but it uses much more power and when it got hot it melted all cables. I already tried smaller glow plugs but it does not stay at the temperature of ignition because of the cold fuel.Rive said:
I recommend an exposed filament glow plug, as used for model airplane engines, not a glow plug from a diesel engine motor vehicle.lukakopa7 said:
While some of us here at PF have done professional designs at that HV level, most have not. And as noted earlier, we need to be careful about folks who come along later and read these kinds of therad. This thread falls under the "dangerous discussion" prohibition in the PF rules, so will remain closed.lukakopa7 said:
An electric arc lighter is a type of lighter that uses an electric arc, rather than a flame, to ignite a fire. It works by creating a high voltage electric arc between two electrodes, which produces enough heat to ignite a flame.
An electric arc lighter can help solve transformer overcurrent issues by reducing the amount of current that flows through the transformer. This is because the electric arc creates a high resistance path, which limits the amount of current that can flow through it. This can help prevent overloading and overheating of the transformer.
Transformer overcurrent issues can be caused by a variety of factors, including short circuits, overloading, and aging equipment. Other factors such as lightning strikes, power surges, and poor maintenance can also contribute to overcurrent issues.
No, an electric arc lighter is not suitable for all types of transformers. It is most commonly used in small transformers, such as those used in household appliances. Larger transformers, such as those used in power grids, require more complex solutions to address overcurrent issues.
Yes, there are some safety concerns to consider when using an electric arc lighter for this purpose. The high voltage and heat produced by the electric arc can be dangerous, so proper precautions should be taken when handling and using the lighter. It is important to follow all safety guidelines and use the lighter only as directed by the manufacturer.