Send this PWM signal to a MOSFET or something, and you have the simplest class D amp in existence. They’re so simple, you can buy a class D amp chip for $3, but [George] thought that would be ...

Because pulse modulation output signals are either on or off, Class D amplifiers produce far less ... requirement from cellphone speakers to high-end stereos. Class D was not coined for "digital ...

Class-D is not an attractive proposition for high-quality domestic amplifiers that must work with separate speakers of unknown impedance characteristics. There is, however, the Class-G method. Power ...