The electronics are important in many fields; it is used by professionals, but by beginners too. When somebody starts to make hobby electronics, the first thing is to learn some basic electronics, it is strongly recommended to start with the basic theories. We cannot start to make any hobby electronics without learning about the amplifier, averages, circuits, clippers and limiters, electromagnetism, heat or light.
But we don’t have to learn everything before starting, because the most important thing is that it’s a hobby and without pleasure it is no more a hobby. If we have a basic hobby electronics kit, we can start to build something, if there is some knowledge along the liking, it will be much easier. For example, it is a good idea to learn something about the amplifiers, what are used to increase the voltage of power amplitude of signals. There are lot applications here, like audio voltage, audio power, intermediate frequency, radio frequency, wide brand, video, etc. The hobby electronics can be very interesting, we can make many projects.