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Power Supply Graphs

One of Andy's little toys is a data collector and oscilloscope, which he connected to the mains electricity, for three days, to see what sort of variations took place.  We had already noticed that clocks that relied on the mains frequency to work usually lost about 15 minutes a day.  For the techies amongst you, the equipment is not fully calibrated so the reading are not 100% accurate but give a good relative feel of what is happening.

The yellow block at the base of the two graphs shows the times when the Laburnum generators were running as there was no mains supply.  As you can see this sometimes occurs for many hours at a time.  The supply from the generator is overall far more stable than from the mains.

 

 

This graph shows a close up of just one hour on the morning of the 12th.

 

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