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Very high frequency (VHF) is the ITU designation for the range of radio frequency electromagnetic waves (radio waves) from 30 to 300 megahertz (MHz), with corresponding wavelengths of ten meters to one meter. Frequencies immediately below VHF are denoted high frequency (HF), and the next higher frequencies are known as ultra high frequency (UHF).
- Marine VHF Radio
A standard handheld marine VHF, mandatory on larger seagoing...
- Sincgars
Single Channel Ground and Airborne Radio System (SINCGARS)...
- Marine VHF Radio
v. t. e. HF's position in the electromagnetic spectrum. High frequency ( HF) is the ITU designation [1] for the range of radio frequency electromagnetic waves (radio waves) between 3 and 30 megahertz (MHz). It is also known as the decameter band or decameter wave as its wavelengths range from one to ten decameters (ten to one hundred meters).
- 100 to 10 m
- 3 to 30 MHz
The Transformers success story started in the new wave of the 1980s: the toys are characters in a vast and exciting fiction told through comics, books, cartoons, and movies. This generated a real impetus to “collect them all” – the more of the toys you own, the more of the fiction you can reenact in imaginary living room battles.
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Dec 17, 2014 · AC energy transfers across transformers via induction. Induction takes place as magnetic field lines of force cut across conductors. Magnetic fields in AC expand and collapse at the frequency rate. Higher frequency means more lines of force cutting conductors, more energy transferred. answered Feb 3, 2017 at 18:13.
- Each AC cycle electric energy is converted to magnetic, and back again. The amount of magnetic energy that a transformer can 'store' is more or les...
- The other answers so far have given an intuitive explanation. I'd like to show you how the equations work if we model a transformer. If we simplif...
- The length of time between cycles where the transformer is charging the iron core decreases with the increased frequency. Imagine trying to move a...
- The transformers which handle high power have their size more or less proportional to the frequency as the power lost in iron increases with the fr...
- from emf equation of X'mer E=4.44fNAB (http://en.wikipedia.org/wiki/Transformer). where E=voltage f=frequency A=Area N=number of turns B=magnetic...
- Shorter answer, no math. AC energy transfers across transformers via induction. Induction takes place as magnetic field lines of force cut across c...
- The transformer permeable material (iron, ferrite, etc) that helps couple the primary and secondary can only handle so many volt-seconds before tha...
- That's because you need less inductance (hence transformer size) at higher frequencies. I (inductor) = V/2pifL P = IV = V^2/2pifL.
Feb 25, 2024 · Most Transformers fiction exists to showcase, spotlight, promote, and, in general, sell toys. Merchandise and other non-transforming "artifacts" also generally exist in support of the toy lines. Transformers toys are generally created and marketed as part of a particular "franchise" (i.e. Beast Wars, Armada, the retroactively-named Generation 1 ...
Transformer. An O-core transformer consisting of two coils of copper wire wrapped around a magnetic core. In electrical engineering, a transformer is a passive component that transfers electrical energy from one electrical circuit to another circuit, or multiple circuits. A varying current in any coil of the transformer produces a varying ...
Apr 26, 2024 · The Transformers ( Cybertronus cybertronii) [1] are a species of sentient, living robotic beings (mostly) originating from the distant machine world of Cybertron. The stories of their lives, their histories, and most especially their wars have been chronicled across many different continuities in the vast multiverse .
