The Thermionic Tube Explained — Everything You Need to Know

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A vacuum tube is a device built to control the flow of charged electrons in a unidirectional flow. In other words, the vacuum tube ensures electricity only travels one way through a device.

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The Fleming valve is the first vacuum tube, which was invented by Sir John Ambrose Fleming in 1904.

Which was the first vacuum tube?

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The vacuum tube was invented in 1904 and was the primary method for controlling electric flow through electronic devices for fifty years until the first integrated circuits were invented and used.

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What is the history of the vacuum tube?

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Vacuum tubes have always been used to control the flow of electricity through electronic components.

What was the first vacuum tube used for?

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Sir John Ambrose Fleming discovered the principle of the vacuum tube and was granted a patent for his device diagram in 1904.

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Who discovered the principle of the vacuum tube?

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