![]() ![]() ![]() It mainly functions as an electronic switch and an amplifier. The transistor is the key component of major modern electronic systems. What is a Transistor?Ī transistor is a three terminal semiconductor electronic device that is used for switching purposes in various electronic circuits. One major disadvantage of the vacuum tube is that it requires a heating element to produce electrons, due to which it consumes much amount of power and burns out quickly.Īlthough, the vacuum tubes are not completely obsolete, they are still being used in radio stations, UHF TV stations, sound amplifiers, etc. The cathode produces electrons and the anode collects these electrons when a potential difference is applied to it. An English physicist John Ambrose Fleming was invented the vacuum tube in 1904 which was a basic switching component of all electronic devices at that age.Ī vacuum tube consists of two electrodes namely a cathode and an anode, which are enclosed in a sealed glass tube with all the air removed, i.e., there is vacuum inside the tube. The practical example of a vacuum is the cathode ray tube (CRT) that was used in early television and computer monitors. Basically, function wise the vacuum tube is an older version of modern transistor. What is a Vacuum Tube?Ī vacuum tube is an electronic device used to control the current flowing in a circuit using a vacuum in a sealed glass tube. Let's start with some basics of vacuum tubes and transistors. In this article, we will highlight all the points that differentiate a vacuum tube from a transistor. However, both are significantly different from each other based on their technology and operation. Vacuum tube and Transistor are types electronic switching devices used a variety of electronic devices and circuits such as computers, communication systems, power supplies, TV, radios, amplifiers, etc. ![]()
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