| Inverter Noise [message #103481] |
Tue, 19 October 2010 14:50  |
Oldngray
Messages: 544
Registered: August 2009
Location: Punta Gorda Florida
Karma: 0
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Just installed the Cobra 1575 (1500 W)and it is extremely quiet, Except when the fans come on, OMG, it could wake up the dead.
Totally unacceptable, anyone else with a Inverter that is strong enuf to run a Refrig and a couple other items without a screeching fan noise?
As always, I appreciate your comments and suggestions.
Richard MacDonald
Punta Gorda, Florida
Sold our TZE April 2015
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| Re: Inverter Noise [message #103485 is a reply to message #103481] |
Tue, 19 October 2010 15:59  |
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I'm running a Samlex 600 watt sine wave. It is very quiet and I don't hear it even with my aids on, unless I put my ear down on it. It runs my OEM Norcold (60watts) and a nearly new Toshiba slim line digital TV. No info on it about draw but don't see how it could be more than 150 watts. The Samlex has about 0.6 A. draw in idle, which I guess is about normal for sine wave units. My problem is having enough battery to keep it going overnight or more. I could also run a portable computer and some other small things with it, I'm sure. Oh, I also charge my cell phone overnight on it. IIRC,I paid about $200 for it. I'd recommend it over the larger square wave units.
geo groth '73 260 Sequoia
Carson City Nevada 89703
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| Re: [GMCnet] Inverter Noise [message #103486 is a reply to message #103485] |
Tue, 19 October 2010 16:03 |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Senior Member |
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I don't know anything about Samlex's inverters, but their
power supplies (120 VAC to 13 VDC) are VERY good!
* * * * * * * * * * * *
* D C "Mac" Macdonald *
* Amateur Radio K2GKK *
* USAF & FAA, Retired *
** Oklahoma City, OK **
* * * "Money Pit" * * *
* * ex-Palm Beach, 76 *
* * * * * * * * * * * *
* "An unarmed man can but flee *
* from evil. Evil can NEVER be *
* overcome by flight FROM it." *
> To: gmclist@temp.gmcnet.org
> From: grggroth@sbcglobal.net
> Date: Tue, 19 Oct 2010 15:59:07 -0500
> Subject: Re: [GMCnet] Inverter Noise
>
>
>
> I'm running a Samlex 600 watt sine wave. It is very quiet and I don't hear it even with my aids on, unless I put my ear down on it. It runs my OEM Norcold (60watts) and a nearly new Toshiba slim line digital TV. No info on it about draw but don't see how it could be more than 150 watts. The Samlex has about 0.6 A. draw in idle, which I guess is about normal for sine wave units. My problem is having enough battery to keep it going overnight or more. I could also run a portable computer and some other small things with it, I'm sure. Oh, I also charge my cell phone overnight on it. IIRC,I paid about $200 for it. I'd recommend it over the larger square wave units.
> --
> geo groth '73 260 Sequoia
> Carson City Nevada
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| Re: Inverter Noise [message #103514 is a reply to message #103481] |
Tue, 19 October 2010 19:09 |
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Hardie Johnson
Messages: 483
Registered: January 2004
Location: Raleigh NC
Karma: 0
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| Oldngray wrote on Tue, 19 October 2010 15:50 |
Just installed the Cobra 1575 (1500 W)and it is extremely quiet, Except when the fans come on, OMG, it could wake up the dead.
Totally unacceptable, anyone else with a Inverter that is strong enuf to run a Refrig and a couple other items without a screeching fan noise?
As always, I appreciate your comments and suggestions.
|
'Screeching' would be a defect. Do You mean just 'noisy?' Most cooling fans can be upgraded if you are stuck with the unit and the dealer or manufacturer won't help. I have bought many from mouser.com or digikey.com. Most equipment manufacturers use some kind of off the shelf fan. You can pick a more expensive but quieter one online.
We built small, powerful LEDs that were used in very quiet biology labs so they had to be noiseless. It took several tries before we were satisfied.
Mounting counts, too. Even the quietest fan would emit a noisy hum if rigidly mounted, they needed rubber feet. Maybe you could isolate the unit?
"bom bom pa hummmmm"
Hardie Johnson "Crashj"
1973 26 foot Glacier, White Thing
Raleigh NC
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| Re: Inverter Noise [message #103558 is a reply to message #103481] |
Wed, 20 October 2010 10:27 |
idrob
Messages: 645
Registered: January 2005
Location: Central Idaho
Karma: 0
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| Oldngray wrote on Tue, 19 October 2010 12:50 |
Just installed the Cobra 1575 (1500 W)and it is extremely quiet, Except when the fans come on, OMG, it could wake up the dead.
Totally unacceptable, anyone else with a Inverter that is strong enuf to run a Refrig and a couple other items without a screeching fan noise?
As always, I appreciate your comments and suggestions.
|
This is a very good outfit and have all kinds of inverters at very good prices. A friend says they are very good to talk to when you call them, so they might also know about inverter noise for their units. Of course, noise is very subjective.
http://www.donrowe.com/inverters/puresine.html
Rob Allen
former owner of '76 x-PB
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| Re: Inverter Noise [message #103600 is a reply to message #103558] |
Wed, 20 October 2010 16:40 |
Oldngray
Messages: 544
Registered: August 2009
Location: Punta Gorda Florida
Karma: 0
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Senior Member |
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Thanks, I have had several people recommend them. I just ordered the Xantrex SW600 from him. He advised it would be more than adequate for my needs and a lot less fan noise.
Will return the Cobra to Amazon.
Richard MacDonald
Punta Gorda, Florida
Sold our TZE April 2015
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| Re: Inverter Noise [message #104485 is a reply to message #103600] |
Thu, 28 October 2010 11:12 |
Oldngray
Messages: 544
Registered: August 2009
Location: Punta Gorda Florida
Karma: 0
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Senior Member |
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Received the Xantrex SW600 yesterday, wired it up this morning and it will not start my Refrig. Boy this is getting to be a pain.
Need to find one that will let us sleep and still run the Refrig.
Anyone using the Power Bright 1100 that Dave Martin mentioned?
My budget will not allow Dans 2000W.
Richard MacDonald
Punta Gorda, Florida
Sold our TZE April 2015
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| Re: [GMCnet] Inverter Noise [message #104578 is a reply to message #104572] |
Fri, 29 October 2010 18:03 |
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WD0AFQ
Messages: 7111
Registered: November 2004
Location: Dexter, Mo.
Karma: 207
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Ok, let us know how it works. I have one of those little ac meters that I use to see how much appliances draw. I just leave it in the GMC. Kill a Watt, I believe it is called. The 4400 series. Pretty handy little gadget, has memory. Great for setting the ac voltage on the Onan.
Dan
3 In Stainless Exhaust Headers
One Ton All Discs/Reaction Arm
355 FD/Quad Bag/Alum Radiator Manny Tran/New eng.
Holley EFI/10 Tire Air Monitoring System
Solarized Coach/Upgraded Windows
Satelite TV/On Demand Hot Water/3Way Refer
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, it is a medium high pitched sound. 