Max Peelman wrote...

>    I've generated a sine wave signal from a PIC before using
>both the onboard PWM output and an external D/A to lowpass
>filters that generate a clean sine wave but with no current
>driving capability. Now I'm looking at an application where
>I may need to drive a 5 to 10 Ohm load with a sine wave signal
>having a Vpp of at most 32 Vdc.
>
>    Any suggestions or advice on how to drive this load with a
>sine wave signal? I'm familiar with transistors and FETs as used
>in PWM applications but have no experience driving this type of
>load with a sine wave signal. Any suggestions will be most appreciated.

The best thing to use might be one of the audio power amplifier
ICs; National semiconductor has some.  Take a look at:

http://www.national.com/parametric/0,1850,811,00.html

Something like their LM3876 might do the job.

Dave D.

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