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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 ...
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 ...
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An electronic symbol is a pictogram used to represent various electrical and electronic devices or functions, such as wires, batteries, resistors, and transistors, in a schematic diagram of an electrical or electronic circuit. These symbols are largely standardized internationally today, but may vary from country to country, or engineering ...
The blue trace, i 1 is the current in the coil's primary winding. It is broken periodically by a vibrating contact in the primary circuit called an interrupter. The changes in current create a changing magnetic flux in the coil which induces a high voltage in the secondary coil, v 2 shown in red. The voltage induced in the secondary is ...
English: Schematic of a parallel plate capacitor with a dielectric spacer. Two plates with area A {\displaystyle A} are separated by a distance d {\displaystyle d} . When a charge ± Q {\displaystyle \pm {}Q} is moved between the plates, an electric field E {\displaystyle E} exists in the region between the plates.
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.
A similar non-standard notation using the unit symbol instead of a decimal separator is sometimes used to indicate voltages (i.e. 0V8 for 0.8 V, 1V8 for 1.8 V, 3V3 for 3.3 V or 5V0 for 5.0 V [24] [25] [26]) in contexts where a decimal separator would be inappropriate (e.g. in signal or pin names, in file names, or in labels or subscripts).