lülitusvõimendi

Lülitusvõimendi is a type of electronic amplifier that operates by switching its output transistors between fully on and fully off states, rather than operating them in a linear region. This switching action allows for much higher efficiency compared to traditional linear amplifiers. The output signal is typically a pulse-width modulated (PWM) signal, which is then filtered to reconstruct the desired audio or radio frequency output.

The main advantage of a lülitusvõimendi is its efficiency, which can exceed 90%. This means less power is wasted as heat, leading to smaller heatsinks, lower power consumption, and longer battery life in portable devices. They are commonly used in audio amplifiers, power supplies, and radio frequency transmitters where efficiency is critical.

However, the switching nature of these amplifiers can introduce challenges. Switching transients can generate electromagnetic interference (EMI), requiring careful circuit design and shielding. The filtering stage also plays a crucial role in determining the audio fidelity or signal purity of the output. Despite these challenges, the high efficiency offered by lülitusvõimendi technology makes them an attractive choice for many modern electronic applications.