Vocademy - Free Vocational Education Amplifiers are classified according to how many degrees of a sine wave they operate on. Video on switching regulators: • Switching Regulators -...
Virtually every affordable amp etc on Amazon, Best Buy are all Class D. I personally don't like them...but they are a lot cheaper and take less power--and much less heat...
The big deal about Class D amplifiers is the efficiency, as they avoid the linear region. A transistor inside the linear region is dissipating power. A transistor outside of this region (Off, or saturating) is not
for DC component of the signal, the resistor in the emitor will lower the amplification of the stage (Gain), for high frequency the reactance of the capacitor will short the resistor, so will increase the gain of the stage.
