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High voltage
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High voltage is an electrical potential large enough to cause injury or damage. In certain industries, high voltage refers to voltage above a nominal threshold. Equipment and conductors that carry hig
High voltages may lead to electrical breakdown, resulting in an electrical discharge as illustrated by the plasma filaments streaming from a Tesla coi
High voltages may lead to electrical breakdown, resulting in an electrical discharge as illustrated by the plasma filaments streaming from a Tesla coil.
Long-exposure photograph of a Tesla coil showing the repeated electric discharges
Long-exposure photograph of a Tesla coil showing the repeated electric discharges
Power lines with high-voltage warning sign
Power lines with high-voltage warning sign
High-voltage substation in Kaanaa, Pori, Finland
High-voltage substation in Kaanaa, Pori, Finland
Tesla coil
Videos
A Tesla coil is an electrical resonant transformer device designed by inventor Nikola Tesla in 1891. It is used to produce high voltage, low current, high frequency alternating current. Tesla experime
High voltage
…multiplier can be used to multiply the voltage produced by an induction coil. It generates DC using diode switches to charge a ladder of capacitors. Tesla coils utilize resonance, are lightweight, and do not require semiconductors. The largest scale sparks are those produced naturally by lightning. An average…
Tesla coil at Questacon, the National Science and Technology center in Canberra, Australia
Tesla coil at Questacon, the National Science and Technology center in Canberra, Australia
Homemade Tesla coil in operation, showing brush discharges from the toroid. The high electric field causes the air around the high-voltage terminal to
Homemade Tesla coil in operation, showing brush discharges from the toroid. The high electric field causes the air around the high-voltage terminal to ionize and conduct electricity, allowing electricity to leak into the air in colorful corona discharges, brush discharges and streamer arcs. Tesla coils are used for entertainment at science museums and public events, and for special effects in movies and television.
Unipolar coil design widely used in modern coils. The primary is the flat red spiral winding at bottom, the secondary is the vertical cylindrical coil
Unipolar coil design widely used in modern coils. The primary is the flat red spiral winding at bottom, the secondary is the vertical cylindrical coil wound with fine red wire. The high-voltage terminal is the aluminum torus at the top of the secondary coil.
Bipolar coil, used in the early 20th century. There are two high-voltage output terminals, each connected to one end of the secondary, with a spark ga
Bipolar coil, used in the early 20th century. There are two high-voltage output terminals, each connected to one end of the secondary, with a spark gap between them. The primary is 12 turns of heavy wire, which is located at the midpoint of the secondary to discourage arcs between the coils.