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Re: Mersey Barrage
Excoriator
5 hours ago
Its not my field, having worked with picowatts rather than Terawatts, but I believe grid level converters - at least the big ones used on HVDC links - do not run at high speed. They are quite crude and some even simply chop DC at Mains frequency to produce a square wave and rely on subsequent L-C filtering to get a sinusoid. More sophisticated ones manage a sort of multilevel boxcar waveform to approximate a sinewave more closely. They too operate at low speed, a few multiples of Mains frequency.
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Re: Flooding at...yes you guessed it.
diggingdeeper
19th Oct 2024 8:33am
The picture of the flooding yesterday was taken from the bridge by the Cheshire Yeoman, so it was Ledsham not Hooton hence the Chester line was affected and not Helsby..... but obliviously the bus service ran from Hooton.
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Be careful at the GO filling station
Excoriator
27th Sep 2024 12:07pm
This is the lowest cost filling station in the area on the A41 near Lairds, but be careful about which nozzle you pick up to fill your car.
It is natural to assume the cheapest is the end one, but it isn't. That is the 'Super' unleaded which costs a bit more than their advertised price. I suspect a lot of people get caught out this way. The cheapest plain unleaded was the second from the end when I last went there. Just look at the prices.
Clearly there is nothing illegal about this. Both are clearly marked, but I think its a bit south of good business practices.
Just be careful.
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