[time-nuts] Thunderbolt spurs on 10MHz output at 100Hz and 200Hz from signal.

Peter Marczinowski peter.laboe at gmail.com
Sun Sep 18 07:11:55 EDT 2016


Even harmonics are caused by asymmetrical nonlinearities, odd harmonics by
symmetrical nonlinearities.

Peter


Am Sonntag, 18. September 2016 schrieb Magnus Danielson :

> Hi,
>
> On 09/18/2016 12:26 PM, David C. Partridge wrote:
>
>> The local power is 50Hz, so I can understand the 100Hz spurs, but I don't
>> quite "get" where the 200Hz spurs are coming from.  Or is that just BAU
>> harmonics?
>>
>
> Consider full-wave rectification of 50 Hz, the power consumption load on
> the capacitor after the rectifier creates an inverse sawtooth wave of 100
> Hz, and sawtooth waveshape have both even and odd harmonics.
>
> While much of this is regulated out in the next step, some of it makes it
> though.
>
> Cheers,
> Magnus
>
>
>>
>> Thanks
>>
>> Dave
>>
>>
>>
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