II. What Is Class D Amplification? (cont�d.) Class D Power Amp Harman/Kardon HKTS 10/12/14
Figure 20.
The HKTS10/12/14 is different from other Class D amps because it uses discrete components for the FET drivers and the output FETs themselves. The drivers and outputs are Class B amps. They are used to insure that the mosfets never turn on at the same time. The mosfets are IRF640 and IRF9640. They are built with Schottky diodes inside the FETs. The amps contain inductors (low pass filters) and drive loads with inductance. The diodes will clamp fly-back voltages and clamp waveforms that have overshoot.
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