[SOLVED] generate sine from either tri or pulse

[aisd]

How can i get a sine wave from tri or pulse wave?
i'd generate tri and pulse and now i want a sine from them too
can logarithmic characteristic of differential amp help?

 

[VSMVDD]

use a cap and res
as a series tank circuit

this will make a sine from either a square or tiangle wave.. form
you may need to half wave rectify it first..using a series diode rectifer

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you can also use a daft opamp to do it

and a diode/res/cap to control its feedback

 

[pauloynski]

AN-263 application note from National may be a good help.

 

[aisd]

Thanks guys
but i simulate a few some circuits, and i think the best one, is to use the logarithmic characteristic of differential amplifier.