How This Receiver Works

The first radios used vacuum tubes to receive the signal and make the device work. The operation of these tubes required a lot of electricity and was quite slow, so scientists decided to find a better solution and found a transistor radio. If you are interested, you can find out what is a transistor radio here.

The first transistor radio that was used was created way back in 1947. It was a perfect replacement for worn and brittle vacuum tubes. The weight of devices that used vacuum tubes was very high because there had to be two batteries that were very heavy. When the radio transistor came into use, the weight of all these devices was greatly reduced. It also reduced the use of electricity and since they used ordinary lamps, the weight of the device was reduced by half. Also, it took very little time to turn them on, compared to devices with vacuum tubes.

In the 1960s, transistor radios were the best-selling commodity. These transistor radios worked on a simple principle. The audio recording will turn on the microphone, after which the sound is converted into electrical signals. These signals reach the transistor via a radio circuit. Finally, the transistors amplify the signal and ensure quality sound on the speakers.

The first commercial transistor radio was produced back in 1954, and then it found its application for many people.

If you want to know what is a transistor radio, read this blog, where a detailed history of this device is given.