开云体育

There is another reason to use DC on very long power transmission lines, and this one is not necessary obvious… On certain installations, and I believe that the Manitoba line is one, the length of

RE Plus – no synchronization problems!! Yes, the Long AC lines from remote generators tend to be unstable, and was a real big problem for AC. I tell mechanical people it is like having a

Yes – because DC has no “crest factor,” it makes greater efficient use of transmission. The peak, average, and RMS values for DC are all the same, reducing insulation requirements and

Oh, good to know a bit about that Bill. Now if I accidentally post a big image, and then go on line, and remove it, will it be purged from the system automatically, and it I delete the whole posting

Richard, no doubt there is still DC and maybe 25 cycle AC, but all this is limited to specific plants, maybe dedicated electric transportation, large mining and such. I have not seen any consumer

And in NYC, the last major use for DC was in the garment district – lots of old textile machines used it. As you say, converters kept them going

Turns out the last DC in the US was Con Edison in NYC, discontinued in 2007. However converters were installed in some buildings to operate devices requiring DC. -- Richard Knoppow Los

JPG is fine probably the others too, I know of no image types that are rejected. Like I said if I was not clear. The images or the image files that are contained in the "Photos" folders, can be

If the neutral side of the line is really neutral. The rule in the old days, as detailed in most handbooks, was to put the plug in to get minimum hum. Of course on DC the set would not work if the

We all must thank you Bill for your generosity and for starting the group.. Thank you Bill Maybe you can tell us what kinds of images are preferred jpg, png, gif, tif etc and which are

*Let me clarify.* * *This is a free group for members except for me which I pay out of pocket and have been for 20 years (Has it been that long? :)* * *The storage space on this group is 30gb not

If this is a free group, total storage space is 1 GB.? Images can gobble that up much faster than text.? I have noticed that some images I have posted have disappeared after some time.? My guess is

MikeThanks for the replay, much appreciated.? Yes, we both appear to have similar interests and we post to several groups in common over these last 30 odd years.? We might have even rubbed elbows at

Yea and now that the 1940s, 50s, etc have past most people have polarized outlets, so you now can polarize the plug properly, so you don’t get a hot chassis. Sent: Wednesday, July 31, 2024

No seconder to that sort of comment here Sent: Wednesday, July 31, 2024 6:00 AM To: [email protected] Subject: Re: [HallicraftersRadios] Hallicrafters group storage space Jim – I

I am 83. Your problem with low frequencies is a new one to me, I will research it. Hearing loss has profound effects. It affects social intercourse and general awareness of the world you live

I hear reasonably well at 81, I think, but I have become sensitive to lower frequencies and if a performance uses heavy bass I have to use earplugs or leave to avoid pain. My wife uses hearing aids

Yes, reversal of the plug should move the chassis to the same potential as the neutral lead, which may or may not be at zero volts depending on how much current is flowing to other devices on the same

It looks to be in nice shape. Good luck with it. It looks like an S40B with a 5R10 dial on it, minus the BFO.

Jim – I do not see how that is possible. I see your name more than any other on numerous posts and numerous groups. Obviously you remember what has been said as you answer every time, even when