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A cap rated for 25v will easily handle 30volts for a short duration.But this zener is connected between two pins that have only a 6 to 7
volt potential in normal operation. If the voltage were to climb to 30
volts, wouldn't the 25v cap be most likely to get damaged, probably
even short out? In that case the zener is not really helping out.
I scavanged an electric motor and squirel cage fan out of a residential
a/c & heating unit that will only run it for about one minute before the
thermal protection turns it off. I'm sure the problem is I don't know
how to wire it because it has 5 wires. I spent time googling and am
plenty confused now: is it single phase, 3 phase, split capacitor, does
it need start or run capacitor, etc.?
Here are the details:
General Electric
1000 rpm
CONT AO 115V
THERMALLY PROTECTED MTW
1/6HP 1PH 60HZ
6.60A
5ksp29kk1564s
5 wires labeled:
C - white
1 - black
2 - yellow
3 - blue
4 - red
I don't have wiring diagram, capacitors or any other clues.
I apply voltage (120) across C and any of the other wires and motor will
run for about 1 minute before thermal switch shuts it off.
How can I wire this? Does it need a capacitor?
My Sony KV27V55 has quit!! While watching the TV the screen suddenly
started
to shrink from the right side. About 10 seconds after this started, the
set
turned off. I found Q601 & Q602 in the switchmode PS shorted as well as an
open R607. I replaced those components as well as VDR601,602 & 603. Also,
just to be safe replaced the H.O.T. The set powered-up and ran great for
about 10 minuted and quit. Again Q601 & 602 & R607 failed. Obviously, I
did
not find the root cause of the initial failure. I sure could use some
suggestions from someone who knows these sets. Also schematics would be of
great help.
Thanks in advance,
Harry
6550 is what we know as KT88 - for any other non US reader.
Regards, NT
I prefer the term "carnivore" for rugrats.Of course it is better than rugrats.
My guess is that it is there for reverse transient protection, is theOn Mon, 11 Aug 2003 00:50:44 -0400, Arnold stewart
arnold.stewart@sympatico.ca> wrote:
But this zener is connected between two pins that have only a 6 to 7
volt potential in normal operation. If the voltage were to climb to 30
volts, wouldn't the 25v cap be most likely to get damaged, probably
even short out? In that case the zener is not really helping out.
A cap rated for 25v will easily handle 30volts for a short duration.
proto-humaniodsOf course it is better than rugrats.
I prefer the term "carnivore" for rugrats.
Ankle-biter works also.
I don't see why.Arnold Stewart.....
25 V Zener "smarter" ? ? ......
.......NOT really........ If the "normal" B+ after the regulation
circuitry is..... say...... 22 volts or so..... that is way to close
to a 25 Volt Zener.... most Zeners have only a 10% tolerance....
....so it could clamp anywhere from 22.5 V to 27.5 V.
ALSO.... more than likely the pre-regulated voltage is in the
order of over 30 volts..... maybe 35 volts, so a regulator failure
would definitely make the 30 Volt Zener clamp and as a result
a fuse would blow or a fusible resistor would open up.... thus
PROTECTING the down-stream circuitry.
Based on this..... the 30 Volt Zener sounds very smart to me.
Institute for Public Accuracy
915 National Press Building, Washington, D.C. 20045
(202) 347-0020 * http://www.accuracy.org * ipa@accuracy.org
___________________________________________________
Tuesday, August 12, 2003
Interviews Available:
Doctors Call for National Health Insurance
Today an article in the Journal of the American Medical Association
(embargoed for 3 p.m. ET), backed by more than 7,000 physicians, proposes
national health insurance. A news conference on the proposal, including two
former Surgeon Generals, was set to take place today at the National Press
Club in Washington, D.C., at 10 a.m.
Dr. STEFFIE WOOLHANDLER, kimberlysoenen@pnhp.org
A lead author of the proposal being presented today, Woolhandler is a
primary care doctor practicing in Cambridge, Massachusetts, and an
associate professor of medicine at Harvard Medical School. She said today:
"We are already spending enough to provide every American with superb
medical care -- $5,775 per person this year . But we don't get what we pay
for. More than 41 million Americans are uninsured. Millions more are
under-insured -- they have coverage but still can't afford vital care and
medications, or they can't get their HMO to pay for the care they need.
Meanwhile we waste a fortune on useless medical paperwork and corporate
profiteering. Single payer national health insurance would save at least
$200 billion annually on paperwork and administration, enough to cover all
of the uninsured and to upgrade coverage for Medicare enrollees and others
who are under-insured."
Dr. QUENTIN YOUNG, pnhp@aol.com, http://www.pnhp.org
National coordinator for Physicians for a National Health Program, Young
has chaired the Department of Medicine at Chicago's Cook County Hospital.
He convened the group of prominent physicians that drafted the proposal.
Young said today: "The doctors' article also critiques the health reform
plans that have been offered by President Bush and the major Democratic
presidential contenders. Proposals that would retain the role of private
insurers -- such as calls for tax-credits, Medicaid/CHIP expansions, and
pushing more seniors into private HMOs -- are prescriptions for failure. By
perpetuating administrative waste, such proposals make universal coverage
unaffordable."
Dr. LINDA PEENO, lindapeeno@aol.com, http://www.LindaPeeno.com
A physician in Louisville, Kentucky, Peeno worked as a medical reviewer for
Humana. She became critical of medical companies denying people care and
ultimately provided evidence for patients suing HMOs and testifying before
Congress. Her story was dramatized in "Damaged Care," a Showtime television
movie. She warned today: "Managed care is taking on new and insidious
forms. At every point along the way, costs are trimmed -- resulting in
worse care for the patients. You want to make sure that a single payer
system is not being run by HMOs, like HMOs have gotten into Medicare."
Anyone have info on the Proton brand ?
I have 2 trimming magnets loose in my yoke and was wondering if could use
"GE silicone II (clear)" (has a temp range of 400F), to fill inside the
yoke casing to keep the magnets in place?
does the inside of the yoke go over 400 degress?
will it be a fired hazard?
the GE Silicone II wont corrode the coating off the coppers wires inside the
yoke?
can i just take the trimming magnets out?
Thanks,
DG
Make and model number may help get answers. WarrenWhen i turn convection oven on it will run about one minute and turn
off.Any suggestions on what the problem would be.
And afaik, after testing, EH 6550, EH KT88, Sovtek 6550, and Sovtek KT88The 6550 is an American tube, released in late 1954 by Tung-Sol, of
Newark NJ.
The KT-88 was released a couple years later, by GEC of the UK, and is
similar to the Tung-Sol 6550, but has some improved specifications, and
looks different. The 6550A was introduced in the early 1970s, but GE of
the USA, and improves upon the specifications of the original 6550 to
the point where it is equivalent to the KT-88.
Most of the 6550 tubes on the market today, are 6550A equivalents, and
can be interchanged freely with the KT-88.
"N. Thornton" wrote:
6550 is what we know as KT88 - for any other non US reader.
Regards, NT
Ge silicone II should be ideal for this. If any part of the yoke getsfrom what ive read.... it has very low acetic acid content... and i was
advized to use common silicone RTV (which usually give out alot of acetic
acid) from a person who has done this many times and hasnt had any problems
my main concern is fire hazard....
DG wrote:
from what ive read.... it has very low acetic acid content... and i was
advized to use common silicone RTV (which usually give out alot of
acetic
acid) from a person who has done this many times and hasnt had any
problems
my main concern is fire hazard....
Ge silicone II should be ideal for this. If any part of the yoke gets
anywhere near 400 deg you've got much more to worry about than a little
silicone catching on fire. The windings and plastic housing would be
destroyed far below that temp, not to mention that it would probably
break the CRT neck. The silicone should be much less flammable than the
plastic parts of the yoke anyway.
--
Andy Cuffe
baltimora@psu.edu
Or 3.3V and 1.5V on the AGP bus, which would be the case with any GEforce4Given that it's an electrolytic, it's probably just for power filtering.
You can check by using an ohmmeter to see if '-' goes to ground (eg; the
mounting bracket) & '+' goes to the 5V or 12V power rail.
Crotch fruit is my favorite.Of course it is better than rugrats.
I prefer the term "carnivore" for rugrats.
Ankle-biter works also.
Mercury cells cannot be sold because of the mercury in them. So theAlan Horowitz wrote:
any of these new-fangled battery chemistries such that, buying an
average one off the shelf, it has a voltage that's within 1% of it's
nominal?
Check the spec.'s on coin size Mercury cells. As I remember a new
one has a well defined voltage.
Good luck.
Bill K7NOM