THE INVENTIONS THAT CHANGE THE WORLD : PART 1

RODDSI SARKAR

SECOND YEAR (B.TECH), DEPT. OF ECE, JALPAIGURI GOVERNMENT ENGINEERING COLLEGE

Have you ever imagined a world without transistors ? Yes ? Then you are in for a major surprise.

When you wake up in the morning, what are some of the first things you do ? You probably check your phone, and maybe turn on the toaster ? Well, both of those are out of the picture in a world without transistors.

You’d have to make your toast the old fashion way, telephones would all be land-line, and if you wanted to contact anyone while you were out, you’d have to rely on a payphone.

On your way out the door, there’d be no alarm system to set, no automatic garage door opener, and no electronic ignition on your car; which means more pollution for the environment.

Our idea of entertainment would be flipped entirely around too. We’d still have giant tube TVs, limited to basic cable, and mostly in black and white. Forget bringing your favourite tunes on your morning jog, or listening to podcasts on your long commute, no more daily news and updates on your mobile unless you wanted to carry a giant radio along with you

But, beyond just the everyday inconveniences, there would be much more significant implications on our society’s development.

For one thing, we probably wouldn’t have made it to the moon. Because we’d be stuck with large bulky technology that’s prone to failure, space exploration in general would be very limited.

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Modern-day transistors

More critical though, medical advancements would move a lot slower, meaning our population would be vulnerable to a lot of things that our modern society doesn’t even think about anymore. Mortality rate would have gone up.

News wouldn’t be reported as quickly, and you wouldn’t have access to so many diverse opinions. Education would be much more limited, and less interactive. Our entire economy would look completely different; there’s no chance that Apple, Microsoft or Amazon would have the global impact they have today.

So what exactly is this transistor ? And who discovered this thing ?

In pure layman's term Transistor is nothing but a Regulator. We control the speed of the fan using Regulator. We manually control the regulator. Instead of manual control if you control a regulator using electrical voltage (current), then it is called Transistor.

Regulator also acts as switch. The same ways transistor also act as switch. Transistors act like a switch, in the sense that they can turn things on and off. These switches control the flow of electric currents, but instead of using mechanical parts, they use voltage.

When a positive voltage is applied, the switch is turned on, and the electric current is allowed to flow through the transistor.

Transistors also work as amplifiers. When it works as an amplifier, it takes in a tiny electric current at one end (an input current) and produces a much bigger electric current (an output current) at the other. In other words, it's a kind of current booster. That comes in really useful in things like hearing aids, one of the first things people used transistors for. A hearing aid has a tiny microphone in it that picks up sounds from the world around you and turns them into fluctuating electric currents. These are fed into a transistor that boosts them and powers a tiny loudspeaker, so you hear a much louder version of the sounds around you.

So basically, transistors have revolutionized electronics since they were first invented over half a century ago by John Bardeen, Walter Brattain, and William Shockley.

Now you cannot possibly imagine a world without transistors. They have been the most significant discovery ever and have revolutionised millions of lives and the way we live.

Data Sources: https://www.build-electronic-circuits.com/how-transistors-work/

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