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-   -   HOW TO increase the class-d's gain? (https://www.diyaudio.com/forums/class-d/138348-increase-class-ds-gain.html)

aobuke 11th February 2009 10:34 AM

HOW TO increase the class-d's gain?
 
2 Attachment(s)
HOW TO increase the class-d's gain?
i use the multisim make a class-d amplifier,
but the result is worse,when 8KHz(-1v~1v) sin is in,the output
is only -1.6v~1.6v,how to increase it ?
:bawling: :bawling: :bawling:

Saturnus 11th February 2009 02:23 PM

Increase R4

aobuke 13th February 2009 07:33 PM

Increase R4

but i think the R4 is the integral resistance,I think it doesn't matter with the CLASS-D'gain.

Saturnus 13th February 2009 08:17 PM

Could be wrong but to me it looks like the feedback resistor.

Since the gain is set by the relationship between the input resistor and the feedback resistor. Either increase the feedback resistor or decrease the input resistor.


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