If one Internet trivia site is to be believed, the most manufactured thing in the world is a transistor. This may be true, but the authors of this information must have also taken into account those placed inside silicon cores, although they are not single elements. After all, in discrete circuits there are at least two resistors per single transistor, also the Internet fact can be questioned quite easily. However, whatever one may say, transistors in one form or another are quite common in electronics. It is thanks to them that a whole branch of digital and logic circuits was created, which, along with increasing computerization, have become the building blocks of the modern world.

When taking DC voltage measurements with a multimeter, we usually don’t think about its accuracy. Receiving a result of 5.1V, when we expect something in the neighborhood of 5V, we assume that the multimeter’s indication is correct, telling ourselves that simply at the output of the power supply or the USB port of the computer …

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