Make certain the signal is real and not an artifact.
I once chased a signal for four hours before I discovered
it was the scope ground "bouncing" ..well that, and other
stuff. Differentially, the signal WAS NOT THERE.
- Robert -
Robert A. Macy, PE .. [email protected]
408 286 3985 . . . .. . . fx 408 297 9121
AJM International Electronics Consultants
101 E San Fernando, Suite 402
San Jose, CA 95112
On Tue, 23 Mar 2004 09:57:30 -0800
"Price, Ed" <[email protected]> wrote:
>
>
> -----Original Message-----
> From: Derek Walton [mailto:[email protected]]
> Sent: Tuesday, March 23, 2004 6:53 AM
> To: [email protected]
> Subject: Tweaking a transient Generator
>
>
> Good day all,
>
> I've been developing a damped sine generator to perform
> the DO-160 lightning
> test, and have had some reasonable success. However (
> there is always a
> gotcha ), the leading edge of the 1 MHz ring wave has a
> very short ( around
> 10 nS ) spike on it. I have tried a number of things to
> kill the spike, but
> to no avail. Does anyone have suggestions on what causes
> this, and ways to
> eliminate it?
>
> I have strived to keep stray inductance small, very
> small, maybe too
> small.....
>
> The switch is a high voltage vacuum relay.
>
> --
> Derek N. Walton
> L F Research
> Poplar Grove, IL 61065, USA
>
>
>
> Derek:
>
> Why not put up a schematic, plus a couple of
> multiple-angle photos, and give
> us a link so we can see what you are doing?
>
> Ed
>
> Ed Price
> [email protected] WB6WSN
> NARTE Certified EMC Engineer & Technician
> Electromagnetic Compatibility Lab
> Cubic Defense Applications
> San Diego, CA USA
> 858-505-2780 (Voice)
> 858-505-1583 (Fax)
> Military & Avionics EMC Is Our Specialty
>
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