What is armstrong oscillator?

An Armstrong oscillator is a type of electronic oscillator, which is used to generate high-frequency signals in the radio frequency range. It was invented by Edwin Howard Armstrong, an American electrical engineer and inventor in the early 20th century.

The oscillator works by using positive feedback in an LC circuit to create a sustained oscillation at a particular frequency. The LC circuit consists of an inductance-coil and a capacitance. The frequency of oscillation is determined by the values of the inductance and capacitance.

One of the main advantages of the Armstrong oscillator is its stability and high Q-factor, which makes it an ideal circuit for generating high-frequency signals. Additionally, the oscillator is relatively easy to build and can be tuned to a specific frequency by adjusting the values of the inductance and capacitance.

Armstrong oscillators are commonly used in many RF (radio frequency) applications, including radio transmitters, RF amplifiers, and signal generators, among others. They are also used in many modern communication systems such as wireless phones, television broadcasting, and satellite communication.