[HN Gopher] Benefits of Class-G and Class-H Boost in Audio Ampli...
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       Benefits of Class-G and Class-H Boost in Audio Amplifiers [pdf]
        
       Author : type0
       Score  : 14 points
       Date   : 2022-06-24 08:38 UTC (14 hours ago)
        
 (HTM) web link (www.ti.com)
 (TXT) w3m dump (www.ti.com)
        
       | skybrian wrote:
       | Interesting. Are there any products that use this? Development
       | boards?
       | 
       | I hope to build a musical instrument someday with an integrated
       | speaker.
        
         | klodolph wrote:
         | This has been around for years. Self's webpage [1] notes that
         | class G amps date back to 1976. They've certainly been used in
         | commercial applications and I'm certain you could buy PCB kits
         | at some point in history.
         | 
         | Apparently, there were a bunch of class G amps that appeared
         | after 5.1 setups got popular, just because of how much less
         | heat they produce per channel.
         | 
         | If you want an efficient, small amplifier these days, class D
         | is also an option. They're cheap, small, and powerful. Much
         | more efficient than class G. If you are just trying to stick a
         | speaker and amp in a musical instrument, I would start by
         | getting an amp that is built into an IC with something that can
         | work with a relatively simple power supply.
         | 
         | [1]: http://www.douglas-self.com/ampins/classg/g.htm
        
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       (page generated 2022-06-24 23:00 UTC)