What is the regeneration circuit?
The regenerative circuit is the type of early design used in radio broadcasts and admission, which are still in limited use. At the most basic level, this concept includes feeding the output of the vacuum tube or solid state components, such as the transistor back together. The combination of this with a specially tuned circuit can significantly amplify the signal without the need for expensive other components. The receivers also existed some disadvantages that used regenerative circuits, such as the difficulty of debugging new stations and the fact that they could also create interference as transmitters. These circuits were widely used on the radio up to the age of 20. The 20th century, although their use in modern times was included in radiofrequency identification readers (RFID) and other simpler equipment.
The basic regeneration circuit consists of only a few folders. The main component is an active element such as a vacuum tube or a field effect (FET) that acts as an amplifier. Asignal is handed over to AKTive element and then with skid -tuned circuit. The tuned circuit allows only a certain resonance frequency back to the active element and creates feedback capable of significantly amplify the signal. Since the vacuum tubes were expensive and cumbersome when regenerative circuits were introduced, this design allowed the creation of radio that was cheaper and smaller.
One of the main disadvantages of regenerative design is the way the feedback loop interacts with the signal gain. Every time the station turns into a radio with a regeneration circuit, the feedback level should be adjusted. If you do not do so, this can lead to incorrect operation. She also liked to suffer from these districts as a direct consequence of a simple design of regenerative amplification and could even generate strong interference as transmitters.
Most radios stopped using the regeneration circuit at 40.years of the 20th century, although still located in simpler facilities. Openers of garage doors that send signals simple radio frequencies (RF) usually use the regeneration circuit because they are so cheap and compact. These modern circuits usually use transistors of field effects or other firm components instead of vacuum pipes. Other modern applications of regeneration circuits include the reader of frequency identification, key locks and receivers in certain mobile phones. These are all applications where the compact nature of the regenerative perimeter prevails over the different disadvantages of the design.