Class H
power amplifiers take the idea of Class G one step further creating an infinitely variable supply rail. This is done by modulating the supply rails so that the rails are only a few volts larger than the output signal at any given time.
The output stage operates at its maximum efficiency all the time. Switched-mode power supplies can be used to create the tracking rails. Significant efficiency gains can be achieved but with the drawback of more complicated supply design and reduced THD performance.
Amplifier TDA1562Q Circuit
If the test checks power
amplifier TDA1562Q on the noise power in the load 4 Ohm chip developed at the output of 130 watts, which is quite clearly shows that it is much more powerful than the chips used in stereo systems.