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"pfjw@aol.com" <pfjw@aol.com>: Mar 04 11:09AM -0800 Coming very late into this.... Fuses are very simple beasts made complicated by a fundamental lack of understanding. a) The nature of the load. A purely resistance load is entirely different from a motor load. Both of which are different from a filament load. b) How inrush current works. A purely resistance load has a massive inrush until the resistance element heats up - whereupon the load drops in proportion to the temperature. An AA5, for instance, is essentially a dead-short at turn-on. As are most tube loads. c) The differences between motor loads, filament loads and electronic loads. d) Rated Operating Voltage. Fuses rated below 240V are to be taken with much salt. e) The differences between a standard fuse, a fast fuse, a slow-blow fused and a dual-element fuse. READ THE OPERATION TABLES! And, unless you have no investment in the connected load or its fate whatsoever, eliminate all slow-blow AGC fuses from consideration - full stop (the one with the wire element wound around a ceramic rod)!! From here, do your own research. For the power-supply in question, I would suggest starting with a 20A DE Fuse rated at 250V. NOTE: Many AGC fuses are rated at only 32V. Avoid them. If this blows consistently, only then would I suggest moving to a 25A DE Fuse. Peter Wieck Melrose Park, PA |
tabbypurr@gmail.com: Mar 04 11:49AM -0800 > Coming very late into this.... > Fuses are very simple beasts made complicated by a fundamental lack of understanding. indeed > a) The nature of the load. A purely resistance load is entirely different from a motor load. Both of which are different from a filament load. filaments are practically speaking purely resistive - as long as you're not driving them at rf, when their tiny L can become relevant. > b) How inrush current works. A purely resistance load has a massive inrush until the resistance element heats up - whereupon the load drops in proportion to the temperature. some are like that, many aren't at all > An AA5, for instance, is essentially a dead-short at turn-on. As are most tube loads. not so > c) The differences between motor loads, filament loads and electronic loads. > d) Rated Operating Voltage. Fuses rated below 240V are to be taken with much salt. I wouldn't recommend salt really. 32v fuses are fine on 12v. > e) The differences between a standard fuse, a fast fuse, a slow-blow fused and a dual-element fuse. READ THE OPERATION TABLES! and other types. Then there's breaking capacity, a rather important thing especially with mains fuses. > And, unless you have no investment in the connected load or its fate whatsoever, eliminate all slow-blow AGC fuses from consideration - full stop (the one with the wire element wound around a ceramic rod)!! sometimes very slow fuses are just the job. That's why they're made. NT |
Phil Allison <pallison49@gmail.com>: Mar 04 05:36PM -0800 pf...@aol.com wrote: --------------------- > Fuses are very simple beasts made complicated by a fundamental > lack of understanding. ** Fuses only seem simple ...... Many blown fuses look perfectly OK, needing a continuity test to prove the point. Ceramic case fuses for one. Blown fuses deserve a careful inspection, to make sure the right amp rating and type ( F or T) was installed. Don't ya hate folk who toss them away, sometimes along with the fuse cap. .... Phil |
"pfjw@aol.com" <pfjw@aol.com>: Mar 04 10:29AM -0800 Oh, I dunno - anyone smitten with a system based on the width of the (Roman) emperor's thumb some several thousand years ago deserves pity. All and at the same time, the last time I saw Merle in concert (as an opener for Leo Kottke of all things!) he was a tired old man with neither vinegar nor piss remaining, and not much of his voice. It was a small room, and entirely unamplified. So, think on it! This AMERICAN is advocating: Arabic numerals. Roman letters. An emperor's thumb. Not very bright. Those who do not remember the paste are condemned to repeat it. -George Santayana Peter Wieck Melrose Park, PA |
Fox's Mercantile <jdangus@att.net>: Mar 04 12:55PM -0600 > Oh, I dunno - anyone smitten with a system based on the width > of the (Roman) emperor's thumb some several thousand years ago > deserves pity. Until they make an ass of themselves over it. > (as an opener for Leo Kottke of all things!) he was a tired old > man with neither vinegar nor piss remaining, and not much of his > voice. It was a small room, and entirely unamplified. Merle has been the embodiment of the mentality that voted for Trump. Typically, the ability to be outraged and threatened by any change. > Roman letters. > An emperor's thumb. > Not very bright. Dumber than a box of rocks. All measurements are arbitrary. They were and are all born out a requirement of repeat-ability. To prove that, I built a set of cabinets using just a stick that I put pencil marks on. "This part has to be this wide/long etc." -- "I am a river to my people." Jeff-1.0 WA6FWi http:foxsmercantile.com |
Terry Schwartz <tschw10117@aol.com>: Mar 04 11:11AM -0800 > Those who do not remember the paste are condemned to repeat it. > -George Santayana I remember the paste. The dumbest kids in class used to eat it. |
tabbypurr@gmail.com: Mar 04 11:56AM -0800 > -George Santayana > Peter Wieck > Melrose Park, PA Measurement units are all arbitrary. One upside of imperial is the units are divisible by several whole numbers, making mental mathematics easier some of the time. To call them 'not very bright' is just not very bright. The modern world contains no end of both unit systems in use, thus the sensible practical person familiarises themselves with both systems. (Which explains why our UK schools only teach one system.) NT |
"Gareth Magennis" <soundserviceleeds@outlook.com>: Mar 04 08:31PM "Fox's Mercantile" wrote in message news:RNadnR_SPpG53AHHnZ2dnUU7-SvNnZ2d@giganews.com... > Oh, I dunno - anyone smitten with a system based on the width > of the (Roman) emperor's thumb some several thousand years ago > deserves pity. Until they make an ass of themselves over it. > (as an opener for Leo Kottke of all things!) he was a tired old > man with neither vinegar nor piss remaining, and not much of his > voice. It was a small room, and entirely unamplified. Merle has been the embodiment of the mentality that voted for Trump. Typically, the ability to be outraged and threatened by any change. > Roman letters. > An emperor's thumb. > Not very bright. Dumber than a box of rocks. All measurements are arbitrary. They were and are all born out a requirement of repeat-ability. To prove that, I built a set of cabinets using just a stick that I put pencil marks on. "This part has to be this wide/long etc." **************************** Just from memory, I can't be arsed to Google it right now, isn't there some piece of metal held in a vault somewhere (possibly France) that is defined to be the accepted length of a metre? Pierre. |
Fox's Mercantile <jdangus@att.net>: Mar 04 03:41PM -0600 On 3/4/18 2:31 PM, Gareth Magennis wrote: > Just from memory, I can't be arsed to Google it right now, > isn't there some piece of metal held in a vault somewhere (possibly > France) that is defined to be the accepted length of a metre? That would be the Bureau international des poids et mesures. The original international prototype of the metre is still kept at the BIPM under the conditions specified in 1889. The BIPM is also the keeper of the international prototype of the kilogram. The BIPM is situated in the Parc de Saint-Cloud, at Sèvres, in the suburbs south-west of Paris. Postal address: Pavillon de Breteuil, F-92312 Sèvres Cedex Street address: 12bis Grande Rue, F-92310 Sèvres However, it's still just an arbitrary measurement. It was based on a fraction of the earth's diameter. And derived from a small arc of said diameter. Coincidentally it just happened to end up being close to the same length of the English yard. Frequency is another arbitrary system. It is based on the rotation of the earth divided by 86,400 for seconds. Or 24 for hours, which had already been standardized during the Roman Empire. The primary advantage of the Metric system is all the units are related to one another and divisible by ten. Length, volume, weight etc.. Unlike the relationship between inches, ounces (liquid) and ounces (weight) that all have different divisors. Inch, feet, yards, miles etc.. -- "I am a river to my people." Jeff-1.0 WA6FWi http:foxsmercantile.com |
"Gareth Magennis" <soundserviceleeds@outlook.com>: Mar 04 10:16PM "Fox's Mercantile" wrote in message news:tc2dnaA8EciZ9QHHnZ2dnUU7-e3NnZ2d@giganews.com... On 3/4/18 2:31 PM, Gareth Magennis wrote: > Just from memory, I can't be arsed to Google it right now, > isn't there some piece of metal held in a vault somewhere (possibly > France) that is defined to be the accepted length of a metre? That would be the Bureau international des poids et mesures. The original international prototype of the metre is still kept at the BIPM under the conditions specified in 1889. The BIPM is also the keeper of the international prototype of the kilogram. The BIPM is situated in the Parc de Saint-Cloud, at Sèvres, in the suburbs south-west of Paris. Postal address: Pavillon de Breteuil, F-92312 Sèvres Cedex Street address: 12bis Grande Rue, F-92310 Sèvres However, it's still just an arbitrary measurement. It was based on a fraction of the earth's diameter. And derived from a small arc of said diameter. Coincidentally it just happened to end up being close to the same length of the English yard. Frequency is another arbitrary system. It is based on the rotation of the earth divided by 86,400 for seconds. Or 24 for hours, which had already been standardized during the Roman Empire. The primary advantage of the Metric system is all the units are related to one another and divisible by ten. Length, volume, weight etc.. Unlike the relationship between inches, ounces (liquid) and ounces (weight) that all have different divisors. Inch, feet, yards, miles etc.. ************************************ OK, I'm no Physisyst, though I quite liked Physics at school and was reasonably good at it. Is it not now considered that time is no longer arbitrary? i.e. Atomic clocks base a second around the determinable decay of some kind of (cesium) radioactive particle? This is not a variable under normal earth conditions. So, "v = f.lambda" has at least one "known" value. You don't actually need to know whether a metre is a metre at all, as long as you accept the value of "t" as a known constant. I think. Albert. |
tabbypurr@gmail.com: Mar 04 02:59PM -0800 On Sunday, 4 March 2018 21:41:33 UTC, Fox's Mercantile wrote: > etc.. Unlike the relationship between inches, ounces (liquid) and > ounces (weight) that all have different divisors. Inch, feet, yards, > miles etc.. Somewhere I have a book from the 1800s that lists the sizes of imperial measurements in various countries. They are nearly all different, that is the prime reason metric became popular, traditional units became a mare when international trade greatly expanded. Easy division by 10 is sometimes useful. Easy division by 2,3,4,6 & 12 is sometimes useful. I pick my system according to which works better for each task. NT |
tabbypurr@gmail.com: Mar 04 03:00PM -0800 On Sunday, 4 March 2018 22:16:09 UTC, Gareth Magennis wrote: > i.e. Atomic clocks base a second around the determinable decay of some kind > of (cesium) radioactive particle? > This is not a variable under normal earth conditions. but the unit of seconds is an arbitrary number of decays. NT |
Fox's Mercantile <jdangus@att.net>: Mar 04 05:09PM -0600 On 3/4/18 4:16 PM, Gareth Magennis wrote: > Is it not now considered that time is no longer arbitrary? > i.e. Atomic clocks base a second around the determinable > decay of some kind of (cesium) radioactive particle? It's still an arbitrary measurement. Just now, it is one they can assign it's arbitrary value more accurately and consistently. Just like the gram. Originally defined as "the absolute weight of a volume of pure water equal to the cube of the hundredth part of a metre, and at the temperature of melting ice"[2] (later at 4 °C, the temperature of maximum density of water). However, in a reversal of reference and defined units, a gram is now defined as one one-thousandth of the SI base unit, the kilogram, or 1×10−3 kg, which itself is now defined, not in terms of grams, but as being equal to the mass of a physical prototype of a specific alloy kept locked up and preserved by the International Bureau of Weights and Measures. Or Fahrenheit vs Celsius. Fahrenheit was originally derived a 0 F = the coldest it's ever been and 100 F = the hottest it's ever been. Both quite arbitrary. Then along came Celsius. Water freezes at 0 C and boils at 100 C, compared to 32 F and 212 F respectively. A little bit more accurate that "Oh shit it's hot outside." -- "I am a river to my people." Jeff-1.0 WA6FWi http:foxsmercantile.com |
"Gareth Magennis" <soundserviceleeds@outlook.com>: Mar 04 11:32PM "Fox's Mercantile" wrote in message news:HpWdnUsDafA74QHHnZ2dnUU7-VXNnZ2d@giganews.com... On 3/4/18 4:16 PM, Gareth Magennis wrote: > Is it not now considered that time is no longer arbitrary? > i.e. Atomic clocks base a second around the determinable > decay of some kind of (cesium) radioactive particle? It's still an arbitrary measurement. Just now, it is one they can assign it's arbitrary value more accurately and consistently. **************************** So are you saying it is a variable? Either it is, or it isn't. Gareth. |
Fox's Mercantile <jdangus@att.net>: Mar 04 05:40PM -0600 On 3/4/18 5:32 PM, Gareth Magennis wrote: > **************************** > So are you saying it is a variable? > Either it is, or it isn't. I didn't say it was variable. I said it's arbitrary, and the arbitrarily assigned value is more precises and repeatable now. -- "I am a river to my people." Jeff-1.0 WA6FWi http:foxsmercantile.com |
"Gareth Magennis" <soundserviceleeds@outlook.com>: Mar 05 12:26AM "Fox's Mercantile" wrote in message news:-bCdnUo2Dt1LHgHHnZ2dnUU7-d2dnZ2d@giganews.com... On 3/4/18 5:32 PM, Gareth Magennis wrote: > **************************** > So are you saying it is a variable? > Either it is, or it isn't. I didn't say it was variable. I said it's arbitrary, and the arbitrarily assigned value is more precises and repeatable now. ************************ I don't need to argue semantics with you. |
Fox's Mercantile <jdangus@att.net>: Mar 04 06:44PM -0600 On 3/4/18 6:26 PM, Gareth Magennis wrote: > I don't need to argue semantics with you. Correct, because arbitrary and variable have two very different meanings. Arbitrary, Based on random choice or personal whim, rather than any reason or system. All units are inherently arbitrary. The variable nature of them is only in the matter with which they have been redefined for greater accuracy and repeatably. It's not like a meter has suddenly changed from 39.370079" to 40". Or has varied from 30" to 40" over the years. -- "I am a river to my people." Jeff-1.0 WA6FWi http:foxsmercantile.com |
"Gareth Magennis" <soundserviceleeds@outlook.com>: Mar 05 01:06AM "Fox's Mercantile" wrote in message news:KLOdnSawhp2PDgHHnZ2dnUU7-InNnZ2d@giganews.com... On 3/4/18 6:26 PM, Gareth Magennis wrote: > I don't need to argue semantics with you. Correct, because arbitrary and variable have two very different meanings. Arbitrary, Based on random choice or personal whim, rather than any reason or system. All units are inherently arbitrary. The variable nature of them is only in the matter with which they have been redefined for greater accuracy and repeatably. It's not like a meter has suddenly changed from 39.370079" to 40". Or has varied from 30" to 40" over the years. ***************************** I'm not interested. Bye. -- "I am a river to my people." Jeff-1.0 WA6FWi http:foxsmercantile.com |
Phil Allison <pallison49@gmail.com>: Mar 04 05:08PM -0800 Fox's Mercantile wrote: ___________________________ > they have been redefined for greater accuracy and repeatably. > It's not like a meter has suddenly changed from 39.370079" to > 40". Or has varied from 30" to 40" over the years. ** Long time ago, it was decided to *define* the inch in tern of the cm. 1 inch = 2.54cm *exactly*. so 1 foot = 30.48cm *exactly". but 1 litre = 61 cu. inches is approximate, cos it goes the other way. ..... Phil |
Jeff Liebermann <jeffl@cruzio.com>: Mar 04 05:19PM -0800 On Sun, 4 Mar 2018 22:16:04 -0000, "Gareth Magennis" >OK, I'm no Physisyst, though I quite liked Physics at school and was >reasonably good at it. Methinks you mean Fizix. >i.e. Atomic clocks base a second around the determinable decay of some kind >of (cesium) radioactive particle? >This is not a variable under normal earth conditions. Nope. Those are "natural units" or units based on the properties of things found in nature and are therefore not arbitrary. They are used mostly in Fizix and by quantum mechanics: <https://en.wikipedia.org/wiki/Natural_units> The remaining units are arbitrary and based on some base unit that is usually measurable, until the search for finer resolution brings the standard bearers into the quagmire of quantum fizix, where their standards run into problems with Heisenberg's uncertainty principle: <https://en.wikipedia.org/wiki/Heisenberg%27s_uncertainty_principle> where one can only measure what one cannot find, and the observer effect: <https://en.wikipedia.org/wiki/Observer_effect_(physics)> where things move away if you try to measure them. As you might suspect, measurement standards based on sub-atomic particles, is a really bad idea. Such difficulties have not stopped people from inventing their own units of measures, usually for some devious purpose: <https://en.wikipedia.org/wiki/List_of_unusual_units_of_measurement> Unfortunately, it doesn't list the unit of measure that I invented and probably should copyright. Helen of Troy allegedly launched 1000 ships and was known to be the ultimate feminine beauty of her day. Therefore, I defined the measure of contemporary feminine beauty as the milliHelen, which would launch one ship. Of course, negative milliHelens are the measure of feminine ugliness capable of sinking one ship. So far, the beauty, fashion and entertainment industries have not expressed any interest in adopting my measurement system. Another useful unit of measure that I invented is the Subaru Day(tm). The digital clock in my 2001 Subaru Forester runs about 10 seconds slow every day, making the length of the average day equal to 24 hrs, 0 mins, and 10 seconds. Rather than repair and calibrate my clock, I have invented a new unit of measure, which defines the length of my day to be 10 seconds longer than the traditional 24 hr day. In keeping with astronomical traditions, the Subaru Day will be synchronized with the solar day several times per year, usually on the day I do an oil and filter change. I hope this helps... -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
"jfeng@my-deja.com" <jfeng@my-deja.com>: Mar 04 03:56PM -0800 Have you tried ebay? There are several remotes that have 32a32 in their titles. For example: https://www.ebay.com/itm/Toshiba-CT-9950-Remote-for-27A50-27A60-32A12-32A32-32A41-32A50-32A60-36A11-36A13/232549196420?epid=1500240567&hash=item3625032284:g:thAAAOSwCmNZwDZ2 |
joseph@cypressfilms.com: Mar 04 12:02PM -0800 On Wednesday, January 13, 2016 at 11:37:04 PM UTC-5, T Wood wrote: > operational. Mine was shutting down exactly as you described and after > replacing the 7812, it has played music for over two hours and is still doing > great. I have had the same problem with my RX-5502. Can you tell me what the $2 Radio Shack part is? I looked at the thread you quoted and did not see a reference to the part name or number. Thanks! |
John-Del <ohger1s@gmail.com>: Mar 04 01:06PM -0800 > > replacing the 7812, it has played music for over two hours and is still doing > > great. > I have had the same problem with my RX-5502. Can you tell me what the $2 Radio Shack part is? I looked at the thread you quoted and did not see a reference to the part name or number. Thanks! Honestly, if "7812" and "regulator" don't ring any bells, you probably shouldn't be screwing around with this. It could not have been any more easy unless someone dispatches a courier to your home with one. |
tabbypurr@gmail.com: Mar 04 03:02PM -0800 > > replacing the 7812, it has played music for over two hours and is still doing > > great. > I have had the same problem with my RX-5502. Can you tell me what the $2 Radio Shack part is? I looked at the thread you quoted and did not see a reference to the part name or number. Thanks! he told you, the 7812. |
bachrich@comcast.net: Mar 04 10:39AM -0800 > I had the same BCO Update message, then eventually the amber light was just stuck on, even when I unplugged power. And it still wouldn't turn on. > Here's what I did to fix it. There's an power on/off switch in the back, next to the power cable input. Turn it to off, then unplug the power cable. Then plug it back in, flip the switch back to on, then hold the Surr Mode button for 5 seconds. Suddenly, it came back to life. > I suspect that that on/off switch is what holds on to some reserve power (why the amber light stayed on even when it was unplugged) and it was froze up in that mode. I think by both unplugging it and flipping the power mode to off, it releases that reserve power and then you can successfully reboot it using their recommended "Surr Mode for 5 seconds" technique. Just a guess, but it worked for me! This worked perfectly for me. I did not unplug the unit from the wall however I just turned the power off for a few minutes, turned it back on and held the Surr Mode button for > 5 seconds and the reset came on. I have also done the network version of the fix as well and that has succeeded also. Does anyone have an idea why this happens during a power outage? |
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