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Shaping waveforms gets turntable in a spin


What is Gadget Master about, if not the creative reuse of existing components? Thanks to Bernard Green, of Syemon Electronic Solutions, for sending in his ingenious self-built solution to a problem.

He writes that he had a need to generate a single cycle of a very low frequency near sine wave, which was to be used to test software that measured the parameters of a waveform generated by a sensor.
Several ideas occurred to him – using digital devices and a digital to analogue convertor – but these needed analogue filters with some big capacitors, which were absent from his ‘junk box’. Then he had a brainwave…

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  1. May 24, 2010 11:35

    Oops. You’ve got us bang to rights there, Peter. Thanks for flagging it.

  2. Peter
    May 20, 2010 12:43

    A “sign wave”?

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