Two patents were filed in the 20s and 30s for devices that would have been transistors if they had ever reached past the theoretical stage. As an extension of this, there was an awareness of conductors.įollowing on from this, semiconductors accompanied the birth of the AC-DC (alternating current – direct current) conversion device, the rectifier, in 1874. Going way back to when Ohm’s Law was first discovered in 1820s, people had been aware of circuits and the flow of current.
So that’s some modern context, but have you ever wondered when the transistor was invented? Or what it looked like? Pre-transistor technology Their main function is to switch or amplify the electrical current in a circuit, and a modern device like a smartphone can contain between 2 and 4 billion transistors. Transistors are a vital, ubiquitous electronic component.
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