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Transformer, electromagnetic field, resonance. A Tesla coil is an electrical resonant transformer circuit designed by inventor Nikola Tesla in 1891. [1] It is used to produce high- voltage, low- current, high- frequency alternating-current electricity. [2] [3] Tesla experimented with a number of different configurations consisting of two, or ...
Skin effect. Distribution of current flow in a cylindrical conductor, shown in cross section. For alternating current, current density decreases exponentially from the surface towards the inside. Skin depth, δ, is defined as the depth where the current density is just 1/e (about 37%) of the value at the surface; it depends on the frequency of ...
f 300 kHz 1 MHz 3 MHz 10 MHz δ .148 µm 66 µm 38 µm 21 µm Strand Size Loss Reduction 44 AWG 51 µm 80% 55% 22% NONE 46 AWG 40 µm 84% 65% 39% NONE 48 AWG 32 µm 87% 72.7% 51% 11% Source: C. R. Sullivan, High Frequency Windings, APEC 2014 Industry Session Presentation
Radio frequency. Radio frequency ( RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency [1] range from around 20 kHz to around 300 GHz. This is roughly between the upper limit of audio frequencies and the lower limit of infrared ...
With a switched mode PSU the switching frequency can be chosen to keep the noise out of the circuits working frequency band (e.g., for audio systems above the range of human hearing) Electronic noise at the input terminals. Causes harmonic distortion to the input AC, but relatively little or no high-frequency noise.
Oudin coil used for medical electrotherapy, 1907, and a schematic diagram of its circuit (left). An Oudin coil, also called an Oudin oscillator or Oudin resonator, is a resonant transformer circuit that generates very high voltage, high frequency alternating current (AC) electricity at low current levels, [1] [2] [3] used in the obsolete forms ...
In 1897 he patented a device called the high-voltage, resonant transformer or "Tesla coil." Transferring electrical energy from the primary coil to the secondary coil by resonant induction, a Tesla coil is capable of producing very high voltages at high frequency. The improved design allowed for the safe production and utilization of high ...
