Re: gEDA-user: [OFF] high current amplifier

[Dave McGuire <mcguire@xxxxxxxxxxxxx>]

On May 20, 2009, at 10:33 AM, der Mouse wrote:
>>> I have to design an audio amplifier that can deliver 100Amps.
>>> [...50Hz...500W...]
>> [...sketch...]
>> This is the highest efficiency type of driver since [its] driving
>> transistors are never in active region -- always full on or off.
>> High efficiency is what you need to put out 500W.
>
> It occurs to me that this could also be viewed as a switching power
> supply whose regulation target voltage varies at audio-signal rates.
> You might find useful literature by looking for switching power supply
> design info.

   I believe this is commonly referred to as a "Class D" amplifier.   
It is basically a switching regulator with a loop response time that  
is fast enough to handle audio frequencies.

            -Dave

-- 
Dave McGuire
Port Charlotte, FL



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