Oldham GL16 Lamps and Li Ion batteries· Page 2

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somersetminer
50.2% (Neutral)
Newbie

11 years ago

#21

http://www.ebay.co.uk/itm/281296551345

not a bad price that for lamp & charger! (even with the duty) makes a joke of what the manufacturer is asking for them here, not sure why it is when something is for the uk market its somehow ok to whack a massive premium on it :glare:

wheldale
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11 years ago

#22

http://www.ebay.co.uk/itm/281296551345

In the USA the electricity is a different voltage, did you have to alter anything on the charger or was it case of putting a 3 pin plug on it and it was ready to use??

simonrl
51% (Neutral)
Administration

11 years ago

#23

http://www.ebay.co.uk/itm/281296551345

In the USA the electricity is a different voltage, did you have to alter anything on the charger or was it case of putting a 3 pin plug on it and it was ready to use??

The yellow brick charger - the one shown in that photo and the most modern version of the Oldham charger - has a 115/230 volt slider on the side.

my orders are to sit here and watch the world go by

risy76115
50.2% (Neutral)
Newbie

11 years ago

#24

all i did was cut the plug of and put a uk one on move slider to 230v and changed the fuse to the one that was in the box for 230v

Rise from the ashes

Lecko
50.2% (Neutral)
Newbie

11 years ago

#25

It's becoming more often than not, that switching power supplies are used in most things and are usually rated 100 volts to 250 volts AC, my computer monitor is within those ranges as is our flat screen tv, which is also dual NTSC and PAL as well as Hi Def.
Saves the manufacturers a bundle just making one size fits all these days.

lozz
50.2% (Neutral)
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11 years ago

#26

When I was in the trade, NTSC used to mean Never The Same Colour. :)

Lozz.

simonrl
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11 years ago

#27

And I think Americans used to claim PAL stood for Picture Always Lousy :lol:

my orders are to sit here and watch the world go by

lozz
50.2% (Neutral)
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11 years ago

#28

"SimonRL" wrote:
And I think Americans used to claim PAL stood for Picture Always Lousy :lol:

They would, the fact was that for the viewer PAL was a much better system back then.

Lozz.

Lecko
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11 years ago

#29

"SimonRL" wrote:
And I think Americans used to claim PAL stood for Picture Always Lousy :lol:

🅱It still has that acronym, but it got better as technology improved, it's all digital over here now, so really NTSC is all but dead.
Big problem with NTSC was it was rushed through the FCC to get colour TV on the streets, I recall the UK government saying no until a full technical investigation was carried out by experts in their fields. Even then, the TV industry was "pushing" to get colour out. It was pretty close, the UL could have been stuck with NTSC had the government put a spanner in the works.
Also remember, back in the mid 60's there was SECAM in France and the Russian system, plus the Germans had the original PAL. Was a close call!!

davel
50.2% (Neutral)
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11 years ago

#30

... and the French SECAM system stood for "Something exceedingly Contrary to the American Method" ...

However, I fear we are getting somewhat :offtopic: here.

Dave

lozz
50.2% (Neutral)
Newbie

11 years ago

#31

From a colour point of view the PAL/NTSC is down to perception or the way the human eye sees things.

With the PAL system colour phase (hue) errors were cancelled out automatically due to the Phase Alternating Line, the phase error cancellation method used reduced the colour saturation level to a certain degree.

With the NTSC system colour phase errors weren't automatically corrected and in general the saturation level was unaffected.

A change in the saturation level is less noticable to the human eye, a change in colour (hue) is more noticable.

I worked on the PAL system stuff in the UK and the NTSC stuff across the pond, PAL gave a better colour reproduction.

Lozz.

Manxman
50.2% (Neutral)
Newbie

11 years ago

#32

Well I understand what you're on about.

lozz
50.2% (Neutral)
Newbie

11 years ago

#33

Yeah, unless prompted I will leave it at that, colour TV transmission etc is a very complex subject and my memory ain't wot it used to be.

Lozz.

Manxman
50.2% (Neutral)
Newbie

11 years ago

#34

So was 19KHZ pilot tone stereo transmission.

lozz
50.2% (Neutral)
Newbie

11 years ago

#35

Gulp..

Lozz.

Lecko
50.2% (Neutral)
Newbie

11 years ago

#36

🅱The electronic haulage speed control on an Anderson Strathclyde AM500 shearer was bad enough to fault find on...;(

Mr.C
50.2% (Neutral)
Newbie

11 years ago

#37

The most hideous piece of circuitry I recall from colours early days, was Thorns Cyclops power supply.
IIRC it combined the functions of switch mode psu & line timebase, in a common feedback loop!

We inhabit an island made of coal, surrounded by a sea full of fish. How can we go wrong.......

lozz
50.2% (Neutral)
Newbie

11 years ago

#38

Ah, the SYCLOPS and the loop, chicken and egg. :)

Lozz.

wheldale
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Newbie

11 years ago

#39

Back on topic, what is the life span of a li-ion lamp compared to a lead acid lamp?

royfellows
50.2% (Neutral)
Newbie

11 years ago

#40

"wheldale" wrote:
Back on topic, what is the life span of a li-ion lamp compared to a lead acid lamp?

You will get opinions on this rather than facts, and this will be the best anyone can do.

Assuming the headset doesn't break, its down to batteries.

Like, do you mean the Oldham T2 lead acid battery one of which I had that would still give 10 hours when it was 40 years old, or the last T6 battery (National Battery of South Africa?) that lasted about 9 months, no kidding.

And Lithium Ion, these will vary from good quality Sanyo or its rebrands down the junk Chinese Ultrafire recycled dud laptop batteries.
So I dont think that there is an answer to this in absolute terms.

Oldham compared with Oldham, I have mentioned the last lead acid they did the T6 above, so my money would be on their Li Ion.

My avatar is a poor likeness.