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Old March 24th 10, 12:15 PM posted to sci.electronics.design,rec.radio.amateur.homebrew
[email protected] dcaster@krl.org is offline
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First recorded activity by RadioBanter: Mar 2010
Posts: 3
Default Square wave to psuedo-sine wave?

On Mar 23, 8:01*pm, "Phil Allison" wrote:


Function generator. Integrate square wave to get triangle wave. *Shape
triangle wave to sine wave using a couple of diodes. *See

http://kitsrus.com/projects/k23.pdf

** Contrary to the OP's wishes, that POS uses op-amps.

*Have you seen the ugly " sine" *wave it produces ??

*The diodes will rectify the RF energy.

* Not even a starter.

... *Phil


Contrary to what you think, the OP seems like he would be happy with a
sine wave with only 1% distortion. The diodes will rectify RF but at
the output the signal level should be several orders of magnitude
higher than the RF. So would not expect that to be a problem. The
reference to the kitsrus was to show one implementation that had an
explanation of the circuit.


Dan