LOPT ???

[Tim Kettring]

Whats a LOPT ? Line OutPut Transformer ???

Thanks

 

[Joe Rongen]

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"Tim Kettring" <tim6kettring@e-garfield.com> wrote in message
news:c6p07v$e7rpu$1@ID-212626.news.uni-berlin.de...

Whats a LOPT ? Line OutPut Transformer ???

Thanks

Tim, that is the British way of writing:
horizontal output transformer or HOT.

Some people have suggested that this
sort of thing happens, because the British
have been living on a small island way too long.




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[Bob Parker]

Aren't they called an "FBT" for FlyBack Transformer in the
USA/Canada? Not being pedantic, but I was under the impression that
"HOT" stands for Horizontal Output Transistor.
That was my understanding, as a denizen of far-away upside-down
Australia where we use the British terms terms too. But our island is
much bigger and warmer than theirs is.

Bob




"Joe Rongen" <joe@alpha.to> wrote:

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"Tim Kettring" <tim6kettring@e-garfield.com> wrote in message
news:c6p07v$e7rpu$1@ID-212626.news.uni-berlin.de...

Whats a LOPT ? Line OutPut Transformer ???

Thanks

Tim, that is the British way of writing:
horizontal output transformer or HOT.

Some people have suggested that this
sort of thing happens, because the British
have been living on a small island way too long.




---
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Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.670 / Virus Database: 432 - Release Date: 4/27/04

 

[Ken Weitzel]

Bob Parker wrote:

Aren't they called an "FBT" for FlyBack Transformer in the
USA/Canada? Not being pedantic, but I was under the impression that
"HOT" stands for Horizontal Output Transistor.
That was my understanding, as a denizen of far-away upside-down
Australia where we use the British terms terms too. But our island is
much bigger and warmer than theirs is.

Bob

Greetings from one colony to another

Here, it's a flyback. Mostly because that's what you
tend to do when you grab ahold of one

But then I'm old, long retired. Perhaps the younger
folks have re-named them Heck, I don't even
know what ESR or ESB or whatever they're referring
to when they talk about electrolytics is

And your little country sure isn't bigger than
ours is Might be warmer now, but won't be
in another month or so

Take care.

Ken

 

[Art]

Seems that this has been addressed before in the N/G. Been doing service
since before the 3A3 became common. Always called the flippin things Flyback
Transformers or High Voltage Transformers. Then Integrated High Voltage
Transformers seemed to become the rage?? Especially when developers found
out how to encase the Tripler within the case of the Flybacks. Having seen
many schematics from the European Continent I became amused at the fact that
the engineers termed them Line OutPut Transformers until I review some
transmitter designs, which also called the main output power transformer
device a LOPT. Kind'a use the terms interchangeably now, as do most of the
service and parts personnel we deal with on a daily basis. Only time it
causes a bit of confusions when a specific company wants it called by the
name they have in their parts list, preferable with the correct part number.
IMHO this discussion will go on 'al infunatum'; the more globalization that
takes place in this industry the more we need to be aware of the different
terms for items, and applications of the same Cheers to all both on the B/I
& Down Under!! Maybe a pint of "Guinness" or six pack of "Fosters" will tend
to quite all the row?? Eh
"Ken Weitzel" <kweitzel@shaw.ca> wrote in message
news:vyXjc.282527$Pk3.274798@pd7tw1no...

Bob Parker wrote:
Aren't they called an "FBT" for FlyBack Transformer in the
USA/Canada? Not being pedantic, but I was under the impression that
"HOT" stands for Horizontal Output Transistor.
That was my understanding, as a denizen of far-away upside-down
Australia where we use the British terms terms too. But our island is
much bigger and warmer than theirs is.

Bob


Greetings from one colony to another

Here, it's a flyback. Mostly because that's what you
tend to do when you grab ahold of one

But then I'm old, long retired. Perhaps the younger
folks have re-named them Heck, I don't even
know what ESR or ESB or whatever they're referring
to when they talk about electrolytics is

And your little country sure isn't bigger than
ours is Might be warmer now, but won't be
in another month or so

Take care.

Ken

 

[Joe Rongen]

X-no-archive: yes


"Bob Parker" <bobp@bluebottle.com> wrote in message
news:ate090p646blm74781d9plk37874ral0db@4ax.com...

Aren't they called an "FBT" for FlyBack Transformer in the
USA/Canada?

Looking at the literature in Canada from different manufacturers
(that I've seen) one can read more often "horizontal output
transformer" than flyback transformer or FB for short.

Not being pedantic, but I was under the impression that
"HOT" stands for Horizontal Output Transistor.

Yes, you are right "HOT" can also indicate other things
including the side, carrying 120 VAC in electronics.

That was my understanding, as a denizen
of far-away upside-down Australia

Nice to hear from you... hang in there!


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[Peter van Merkerk]

But then I'm old, long retired. Perhaps the younger
folks have re-named them Heck, I don't even
know what ESR or ESB or whatever they're referring
to when they talk about electrolytics is

I guess that in the good old days the failure rate of electrolytics wasn't
as high as it is today.

--
Peter van Merkerk
peter.van.merkerk(at)dse.nl

 

[John Miller]

Peter van Merkerk wrote:

I guess that in the good old days the failure rate of electrolytics wasn't
as high as it is today.

Maybe worse. But the failure mechanism wasn't as well understood, and often
we'd make the symptoms go away by bridging a capacitor with a substitute,
then change it out and go on our way, without ever realizing there was such
a thing as ESR.

--
John Miller
Email address: domain, n4vu.com; username, jsm

"How do I love thee? My accumulator overflows."

 

[Ken Weitzel]

John Miller wrote:

Peter van Merkerk wrote:


I guess that in the good old days the failure rate of electrolytics wasn't
as high as it is today.


Maybe worse. But the failure mechanism wasn't as well understood, and often
we'd make the symptoms go away by bridging a capacitor with a substitute,
then change it out and go on our way, without ever realizing there was such
a thing as ESR.

Hi...

Or in the case of the old can types, just bridge
the bad section and leave it

Memories.... the old "joke" back then was:

"Do you know why my radio hums?"

"Because it doesn't know the words"

What *does* ESR or ESB stand for?

Take care.

Ken

 

[Bob Parker]

Howdy!
ESR is short for Equivalent Series Resistance, that annoying
characteristic of electrolytic caps to behave as though they have a
substantial resistor in series with them.
If you go to Doug Jones' Capacitor Wizard website at
http://www.awiz.com/cwinfo.htm, there's a lot of info there about this
subject.

Regards,
Bob



Ken Weitzel <kweitzel@shaw.ca> wrote:

Hi...

Or in the case of the old can types, just bridge
the bad section and leave it

Memories.... the old "joke" back then was:

"Do you know why my radio hums?"

"Because it doesn't know the words"

What *does* ESR or ESB stand for?

Take care.

Ken

 

[exray]

Ken Weitzel wrote:

Hi...

Or in the case of the old can types, just bridge
the bad section and leave it

Aargh....that old-time practice killed a lot of power transformers
because of the leakage (load) presented by the old cap.

-Bill

 

[BWL]

However, there are sets (mostly rear projection) with both high voltage AND
horizontal output transformers. I like those terms, since there's no confusion
about what each one does...

 

[Ken Weitzel]

Bob Parker wrote:

Howdy!
ESR is short for Equivalent Series Resistance, that annoying
characteristic of electrolytic caps to behave as though they have a
substantial resistor in series with them.
If you go to Doug Jones' Capacitor Wizard website at
http://www.awiz.com/cwinfo.htm, there's a lot of info there about this
subject.

Regards,
Bob

Thanks, Bob. I appreciate it. Old, long retired,
strokes took me out of the picture for a loooong time,
but it's still nice to keep up a little.

Thanks again, and take care.

Ken

 

[Ken Weitzel]

exray wrote:

Ken Weitzel wrote:


Hi...

Or in the case of the old can types, just bridge
the bad section and leave it


Aargh....that old-time practice killed a lot of power transformers
because of the leakage (load) presented by the old cap.

-Bill

Hi Bill...

Yeppers, but we knew no better...

And it was difficult to heat the twisted soldered
to a chassis lugs to remove them...

Take care.

Ken

 

[Bob Parker]

Glad to be of some kind of assistance Ken. I'm not that young
myself any more!

Best wishes,
Bob


Ken Weitzel <kweitzel@shaw.ca> wrote:

Thanks, Bob. I appreciate it. Old, long retired,
strokes took me out of the picture for a loooong time,
but it's still nice to keep up a little.

Thanks again, and take care.

Ken

 

[L. Fiar]

"Ken Weitzel" <kweitzel@shaw.ca> wrote in message
news:vyXjc.282527$Pk3.274798@pd7tw1no...

Greetings from one colony to another

Here, it's a flyback. Mostly because that's what you
tend to do when you grab ahold of one

But then I'm old, long retired. Perhaps the younger
folks have re-named them

Here in the UK, they have been known as a LOPT (Line OutPut Transformer) for
many years. The term Flyback Transformer is now more often used here
too.
Some years back, Thorn used a system known as SYCLOPS - Synchronous
Converter and Line OutPut Stage.
What a name.


LF.