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Author Topic: Tesco "Value" eco-bulbs  (Read 2189 times)

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Dishevelled Den

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Re: Tesco "Value" eco-bulbs
« Reply #30 on: 26 October 2009, 11:54:09 »

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this thread is megger funny   :y

Doug

Some Wayne Kerr set it off at a tangent, that's why.  ;D

Kevin




....shocking!- this is no way to conduct a thread ::) ;D ;D
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Kevin Wood

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Re: Tesco "Value" eco-bulbs
« Reply #31 on: 26 October 2009, 12:05:49 »

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Not as funny as the fact that we are all using 50 Hz instead of the more efficient 60 Hz ...

I'm not sure I would agree that 60Hz would be more efficient. It has some advantages in that transformer cores and motor stators can be made slightly smaller but hysteresis and eddy current losses generally increase with frequency as do the reactive losses in transmission lines.

Kevin
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zirk

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Re: Tesco "Value" eco-bulbs
« Reply #32 on: 26 October 2009, 17:15:47 »

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this thread is megger funny   :y

Doug

Some Wayne Kerr set it off at a tangent, that's why.  ;D

Kevin

Ohm Dear, hope its not going down the AC/DC route.
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Pitchfork

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Re: Tesco "Value" eco-bulbs
« Reply #33 on: 26 October 2009, 17:29:27 »

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Quote
Not as funny as the fact that we are all using 50 Hz instead of the more efficient 60 Hz ...

I'm not sure I would agree that 60Hz would be more efficient. It has some advantages in that transformer cores and motor stators can be made slightly smaller but hysteresis and eddy current losses generally increase with frequency as do the reactive losses in transmission lines.

Kevin
What was his No. 1 hit???
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KillerWatt

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Re: Tesco "Value" eco-bulbs
« Reply #34 on: 26 October 2009, 19:08:41 »

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Quote
Not as funny as the fact that we are all using 50 Hz instead of the more efficient 60 Hz ...

I'm not sure I would agree that 60Hz would be more efficient. It has some advantages in that transformer cores and motor stators can be made slightly smaller but hysteresis and eddy current losses generally increase with frequency as do the reactive losses in transmission lines.

Kevin
A wasted explanation Kev  :(
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Kevin Wood

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Re: Tesco "Value" eco-bulbs
« Reply #35 on: 27 October 2009, 10:05:40 »

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A wasted explanation Kev  :(

Alas you might be right. Still, keeps me sharp while I'm occupied just herding virtual electrons around inside the registers of a CPU.  ;)

Kevin
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