[sdiy] Understanding Analog Computer Schematics?

[Dave Manley]

A quarter cycle of a sine wave is a pretty close approximation of a 
parabola.

I was surprised to see how close.

-Dave

harrybissell at wowway.com wrote:
> close enough for YouTube... can you tell the difference in the video ?
>
> <lol>
>
> H^) harry
>
>
>
> On Mon, 23 Feb 2009 21:07:14 -0500, Aaron Lanterman wrote
>   
>> Although for Most Accurate Results, I think it should be quadratic,  
>> not a sine wave.
>>
>> - Aaron
>>
>> On Feb 23, 2009, at 7:27 PM, harrybissell at wowway.com wrote:
>>
>>     
>>> A resonant filter triggered with a pulse, followed by an absolute
>>> value circuit. Vary the Gain, the Resonance, and the Frequency ???
>>>
>>> H^) harry
>>>       
>
>
> Harry Bissell & Nora Abdullah 4eva
>
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