| Defining the buzz box [message #203200] |
Sun, 31 March 2013 14:00  |
zhagrieb
Messages: 676
Registered: August 2009
Location: Portland Oregon
Karma: 0
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The buzz box was long gone when I got my coach and I've never seen one? Does it use the old mechanical vibrator like we once used in mobile high voltage power supplies?
Glenn
Glenn Giere, Portland OR, K7GAG
'73 "Moby the Motorhome" 26'
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| Re: Defining the buzz box [message #203205 is a reply to message #203200] |
Sun, 31 March 2013 14:48  |
GeorgeRud
Messages: 1380
Registered: February 2007
Location: Chicago, IL
Karma: 0
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You can keep it to have a 12 volt source for the garage, but don't leave it attached to batteries for any length of time. It is a great battery killer if left unattended.
George Rudawsky
Chicago, IL
75 Palm Beach
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| Re: Defining the buzz box [message #203210 is a reply to message #203200] |
Sun, 31 March 2013 17:32 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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I don't think there are any filter caps in there. I think it puts out inverted half sinewave DC. Hence the Buzz. So for example the bottom half of the AC wave is flipped so you have bumpy DC waveform on a scope. I think they charged into the 13s enough to do long term boil out, but not into the 14s to let it Fully charge and gas and then be smart enough to shut down. There was no smart. So if you have one don't leave it on more than a day and then drive a few hours to finish the charge via Delco alternator.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: Defining the buzz box [message #203214 is a reply to message #203212] |
Sun, 31 March 2013 18:26 |
tphipps
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
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Blue box, somewhat larger than a lunchbox, with a visible fuse holder, and A/C cord plus a black and red 12v DC cord. Should be near the breaker panel, depending upon who assembled the coach.
Good for a bench 12v DC supply, but not a good choice for battery charging. Better choices exist, see Iota, Progressive Dynamics, Xantrex models.
Tom, MS II
2012 Phoenix Cruiser model 2552
KA4CSG
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| Re: [GMCnet] Defining the buzz box [message #203216 is a reply to message #203200] |
Sun, 31 March 2013 18:25 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Nah - failry simple 12V power supply. Mine uses a ferroresonant transformer to get some regulation. Relay or two to sapw between it and the house battery to run the house 12v equipment.
--johnny
'76 23' transmode norris
'76 palm beach
From: Glenn Giere <glenngiere@gmail.com>
To: gmclist@temp.gmcnet.org
Sent: Sunday, March 31, 2013 3:00 PM
Subject: [GMCnet] Defining the buzz box
The buzz box was long gone when I got my coach and I've never seen one? Does it use the old mechanical vibrator like we once used in mobile high voltage power supplies?
Glenn
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Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: [GMCnet] Defining the buzz box [message #203219 is a reply to message #203203] |
Sun, 31 March 2013 18:35 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Well, I have a Progressive 60 amp supply I've note felt the need to install, the original supply works quite well. If/when it dies, I'll stuff the Progressive in, along with the fuse/distribution block another GMCer kindly gave me. The solar panels and their associated controller take good care of the battery - at least so far they have - and I kind of like the flickering light I get from the supply that was originally fitted to the coach. I'm partial to linear supplies for their simplicity and consequent long term reliability. Unfortunately, the price of copper favors switchers even with a high parts count and consequent higher failure rate, radiated electrical noise, and moving parts. The linear ones make way better fishing boat anchors and door stops, too.
--johnny
'76 23' transmode norris
'76 palm beach.
From: Dan Gregg <gregg_dan@hotmail.com>
To: gmclist@temp.gmcnet.org
Sent: Sunday, March 31, 2013 3:33 PM
Subject: Re: [GMCnet] Defining the buzz box
Good explanation Jim. Anyone that finds they have a coach with the original "buzz box" installed really should upgrade to a present day converter. Electronics has come a long way since the 70's.
Dan
--
Dan & Teri Gregg
Dexter, Mo.
http://danandteri.blogspot.com/
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Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: [GMCnet] Defining the buzz box [message #203307 is a reply to message #203306] |
Mon, 01 April 2013 14:45 |
bumpersticker
Messages: 60
Registered: February 2004
Location: Redondo Beach, CA
Karma: 0
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Another little known fact about the buss box is that the output
will vary with Frequency. it's optimum output is at 60 Hertz.
If your operating on your Onan and its off frequency the output
will vary. The amount of variance will depend on the frequency.
Bob Cook
78 Birchaven
75 Avion (In work)
Redondo Beach, CA
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