Oscilloscope [RE-wrenches]

[Joel Davidson]

Hi Dean,
Have you bought a scope from HSC? What model?
Joel Davidson

----- Original Message ----- 
From: "Dean T. Newberry" <deant at dcn.org>
To: <RE-wrenches at topica.com>
Sent: Saturday, February 28, 2004 9:27 AM
Subject: Re: Oscilloscope (was SW5548 interference) [RE-wrenches]


> Good used scopes and lots of other reusable electronics available at: H
> S C Electronic Supply, (916) 338-2545, 4837 Amber Ln, Sacramento, CA 95841
>
> Joel Davidson wrote:
>
> >Wrenches,
> >What rugged, portable, reasonably priced oscilloscope (brand and model)
do
> >you use and recommend? Thank you in advance.
> >Joel Davidson
> >
> >----- Original Message ----- 
> >From: "sunwise" <sunwise at cheqnet.net>
> >To: <RE-wrenches at topica.com>
> >Sent: Thursday, February 26, 2004 10:33 AM
> >Subject: RE: SW5548 interference again [RE-wrenches]
> >
> >
> >
> >
> >>Greetings Keith,
> >>
> >>Have you scoped the outputs of the inverters.  While such problems are
> >>occasionally reported with the SWs, you also may have lost a stage in
> >>one of the units which results in a much more square wave output.  I had
> >>a similar scenario and it turned out to be nothing more than the fact
> >>that during assembly, someone had not adequately tightened a connection
> >>to one of the three transformers and it failed.  If one of the SW's has
> >>a similar problem, it will also not deliver as high a charging current
> >>to the batteries.
> >>
> >>As mentioned in the past, you can also do a rough test for this with a
> >>digital meter that is not true RMS.  If it is sine wave, it should read
> >>about 120vac, if it is modified square wave, it will read less on the
> >>non RMS meter, perhaps as low as 95 volts.
> >>
> >>Kurt Nelson
> >>
> >>-----Original Message-----
> >>From: Keith Cronin [mailto:sales at islandenergy.net]
> >>Sent: Thursday, February 26, 2004 11:49 AM
> >>To: RE-wrenches at topica.com
> >>Subject: SW5548 interference again [RE-wrenches]
> >>
> >>
> >>Hello Gang
> >>
> >>I am again having issues with a dual SW5548 system on a mega mansion
> >>with all of these sophisticated dimmers/speed controls for fans as well
> >>as the Leviton brand MD101 dimmers for the low voltage MR16 lamps
> >>throughout the home. I have tried GE 4uf 370 VAC run capacitors to clean
> >>the ripple, but it seems when the power goes out, and the "19" ceiling
> >>fans are on as well as the dimmers for the lighting, the lights in some
> >>areas start to do the disco strobe and some of the fans start to hum.
> >>
> >>Anyone know if it is due to the 34-52 steps in the SW and because it
> >>gets worse on the steps as the machines get loaded down?
> >>
> >>
> >>
> >>Any suggestions out their? Anyone know of any line filter/conditioners?
> >>
> >>
> >>
> >>I know I could probably switch out the units to some outback's, but the
> >>client isn't ready for that yet!
> >>
> >>
> >>
> >>thanks
> >>
> >>
> >>
> >>Keith Cronin
> >>
> >>President
> >>
> >>Island Energy Solutions Inc
> >>
> >>318A Kuulei Rd
> >>
> >>Kailua, HI 96734
> >>
> >>808-262-3268 Tel
> >>
> >>808-263-0338 Fax
> >>
> >>keith at islandenergy.net
> >>
> >>www.islandenergy.net
> >>
> >>
> >>
> >>
> >>
> >> <http://www.islandenergy.net>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>[Non-text portions of this message have been removed]
> >>
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>
> -- 
>
>
> * Cooperative Community Energy* *Dean T. Newberry*
>
> 430 D Street, Davis CA, 95616
> Tel: 530 758-6064
> Fax: 530 758-3684
> Email: deant at dcn.org
> Web:  CCEnergy.com
>       Talbott Solar <http://www.dcn.davis.ca.us/go/deant/>
>
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