File:Tesla Colorado Springs lab-primary circuit of Magnifying Transmitter.jpg
![File:Tesla Colorado Springs lab-primary circuit of Magnifying Transmitter.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/1/16/Tesla_Colorado_Springs_lab-primary_circuit_of_Magnifying_Transmitter.jpg/800px-Tesla_Colorado_Springs_lab-primary_circuit_of_Magnifying_Transmitter.jpg?20150825010955)
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Summary
[edit]DescriptionTesla Colorado Springs lab-primary circuit of Magnifying Transmitter.jpg |
English: Parts of the magnifying transmitter, a huge Tesla coil high voltage generator built by inventor Nikola Tesla in his Colorado Springs laboratory 1899-1900. Picture was taken by photographer Dickinson V. Alley during a December 1899 photo shoot commissioned by Tesla to accompany his upcoming article "The Problem of Increasing Human Energy" in the June 1900 Century Magazine. The apparatus consumed 300 kilowatts and could produce potentials in the neighborhood of 12 million volts at frequencies of 50 to 150 kHz, reportedly producing 135 foot "lightning bolts". The first time Tesla turned it on, the resulting overload set fire to the generator of the Colorado Springs electric power company, destroying it. Tesla used the device in experiments on wireless power transmission. The curving wall at left is the 53 ft diameter secondary winding of the air core resonant transformer, consisting of 50 turns of thick wire wound on a 9 ft. high circular wooden "fence" around the periphery of the lab. The primary winding is a single turn of heavy cable buried at the base of the "fence". It is connected to the bank of oil capacitors in foreground and to a rotary spark gap in background. The primary is powered by the powerful Westinghouse step-up transformer against the wall in back, which Tesla had rewound to produce from 20 to 40 kilovolts. At background right is a large adjustable coil in series with the transformer, that Tesla used to control the current to the circuit. |
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Source | Retrieved August 22, 2015 from Colorado Springs Lab, TeslaResearch.Jimdo.com. First published in Nikola Tesla, "The Problem of Increasing Human Energy", Century Magazine, The Century Co., New York, June 1900, fig. 6. Also reprinted in Nikola Tesla, "Talking with the planets" in Collier's Weekly, P. F. Collier and Son, New York, Vol. 26, No. 19, February 9, 1901, p. 5 |
Author | Dickenson V. Alley |
Licensing
[edit]Public domainPublic domainfalsefalse |
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Annotations InfoField | This image is annotated: View the annotations at Commons |
Secondary winding of large air core transformer 50 turns of heavy wire wound on 53 ft. diameter wooden "fence" around periphery of lab
Bank of oil capacitors connected to primary winding to make tuned circuit
High voltage step-up transformer which powered the coil, produced 20,000 to 40,000 volts
Rotary spark gap turned by electric motor
Large crank adjustable inductor (coil) to control primary current
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