8.3.5. What are the potential problems of a Class-D amplifier based system?
The two most common issues of class-D amp system are AM interference and EMI. The switching frequency of class-D ranges
from 300kHz to 450kHz typically 315kHz. The harmonics of such switching frequency will fall into the AM band of 600kHz to
1710kHz. To avoid interference, it is recommended to have a variable switching frequency adjustment circuit [usually known as
beatproofing in PSG). Systems without AM tuner are not required to have such circuitry.
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SA-HT640WPL
Summary of Contents for SA-HT640WPL
Page 4: ...23 2 Packaging 109 24 Replacement Parts List 110 24 1 Component Parts List 111 4 SA HT640WPL ...
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Page 19: ...8 2 Detail Block Diagram Receiver module 19 SA HT640WPL ...
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Page 37: ...10 1 Disassembly Flow Chart 37 SA HT640WPL ...
Page 38: ...10 2 Main Components and P C B Locations 38 SA HT640WPL ...
Page 46: ...Step 3 Push tray assembly to the direction of arrow shown 46 SA HT640WPL ...
Page 53: ...14 2 Main P C B 53 SA HT640WPL ...
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Page 104: ...21 3 4 2 Receiver Module P C B 104 SA HT640WPL ...
Page 106: ...23 Explode Views 23 1 Cabinet Parts Location 106 SA HT640WPL ...
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