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High-voltage discharge

High voltage discharge is the process of using Tesla coils to raise the voltage to a high level of several million…

High-voltage discharge — Frontier Technology exhibit for science museums
Studio rendering
CategoryFrontier Technology
Standard sizeCustom size
SupplySingle unit or batch · OEM to your drawing
Lead timeStandard 4–8 weeks after deposit (confirmed per contract)
Warranty1 year, structure and control
DocumentsSpecification sheet · control diagram · spare-part list

A standard catalogue model: the dimensions, control package and finish are fixed, which is what keeps the price and the lead time predictable. Size, colour and interface language can be adapted without a new design cycle.

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01 / Overview

High voltage discharge is the process of using Tesla coils to raise the voltage to a high level of several million volts through a transformer. Then, through the LC oscillation of two-stage coils (high-frequency circuit vibration that alternates between electrical and magnetic energy), the primary and secondary oscillation frequencies are adjusted by matching the voltage regulator and arc extinguisher (protective device that controls the arc and stabilizes the circuit). Finally, the discharge needle at the top of the voltage equalizing cover (insulation protective cover that balances the voltage and protects the equipment) will generate a discharge phenomenon around it, and the arc will push the air to vibrate and emit music. When the frequency of discharge changes, the vibration frequency of the air also changes, resulting in different tones. Faraday cage is a cage made of metal. When high voltage is applied to the outside of the cage, the current is conducted from the surface of the cage to the ground through the metal mesh, so the electric field inside the cage is zero everywhere, which can achieve the effect of electrostatic shielding. Therefore, the experiencer will not be affected by high voltage. Discharge along the surface.

02 / How visitors use it

The unit is designed for unsupervised public use: controls are recessed or shielded, moving parts are enclosed, and the interface is operable by a child of about six with no instruction. Where a screen is used, the language can be switched without changing the hardware, and the content can be replaced on site.

03 / The science behind it

The high-frequency and high-voltage electricity generated by Tesla accelerates the charged particles inside the lamp and flies towards the electrodes, which can excite and generate a large number of electrons. When the energy of these electrons colliding with free gas atoms is large enough, they can ionize the gas atoms into positive ions and electrons, which is the ionization phenomenon of gases. A Faraday cage is a cage made of metal or a good conductor. The cage is connected to the ground, and according to the condition of electrostatic balance of the grounding conductor, the cage is an equipotential body with zero internal potential difference and zero electric field. In high-voltage live work, workers wearing uniform clothing woven with metal wire or conductive fibers can provide protection to the human body. Surface discharge refers to the discharge phenomenon along the interface of different aggregation states of dielectrics, usually occurring along the surface of solid dielectrics in gas or liquid dielectrics.

04 / Built for a public floor

Every unit leaves the factory after a running test: mechanisms cycled, electronics burned in, edges dressed, fixings torqued and marked. Wear parts — bearings, sliders, lamps, belts, touch panels — are modular and listed on the spare-part sheet, so a venue technician can replace them without returning the exhibit. Crating is plywood with foam blocking; the loading plan and packing list travel with the shipment.

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