Search results
Results from the WOW.Com Content Network
For this reason, induction coils were called spark coils. An induction coil is traditionally characterised by the length of spark it can produce; a '4 inch' (10 cm) induction coil could produce a 4 inch spark. Until the development of the cathode ray oscilloscope, this was the most reliable measurement of peak voltage of such asymmetric ...
English: Schematic diagram of a Ruhmkorff coil (induction coil or "spark coil") circuit. The Ruhmkorff coil was a high voltage transformer that generated pulsing high voltage current from a low voltage DC source by use of a vibrating magnetic contact arm called an interrupter. It was developed between 1836 and 1870 by Nicholas Callan, Heinrich ...
Main page; Contents; Current events; Random article; About Wikipedia; Contact us
Each turn of the coil is at a slightly different potential, so the electric field between neighboring turns stores charge on the wire, so the coil acts as if it has a capacitor in parallel with it. At a high enough frequency this capacitance can resonate with the inductance of the coil forming a tuned circuit , causing the coil to become self ...
A diagram of Faraday's iron ring apparatus. Change in the magnetic flux of the left coil induces a current in the right coil. [2] Electromagnetic induction was discovered by Michael Faraday, published in 1831. [3] [4] It was discovered independently by Joseph Henry in 1832. [5] [6]
A solenoid is a long, thin coil; i.e., a coil whose length is much greater than its diameter. Under these conditions, and without any magnetic material used, the magnetic flux density B {\displaystyle B} within the coil is practically constant and is given by B = μ 0 N i ℓ {\displaystyle B={\frac {\mu _{0}\,N\,i}{\ell }}}
The coil and the capacitor form a series LC circuit which is tuned to a resonant frequency that matches the transmission coil located inside of the brown mat. Power is transmitted over a distance of 13 inches (33 cm). To remove energy from the secondary coil, different methods can be used, the AC can be used directly or rectified and a ...
File:Induction coil waveforms.svg; File:Induction coil waveforms with capacitor.svg; Primarily, the figures do not show the effects of breakdown. The comments are misleading. The first figure has an odd idealization. Apparently it wants a stray capacitance to explain a limiting peak voltage but then ignores the capacitance for the decay.