Rail Stations to be LED lit

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Virgin Trains: LED lighting at stations is as much about customer satisfaction as it is about energy

.............Virgin is refraining from installing high levels of intelligent lighting system in which, for example platform lights would remain off when not needed, and turn on when sensors detect people on the platform, because such systems could confuse train drivers........Click the link to read more.

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Journey towards Making the Most Efficient Garden / Pathway Light

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When I first started with Solar Lighting it was to create a simple robust street light.
Created a Light that was good and robust. It was a typical Solar Street Light.
The LEDs were superflux capable of being driven to 50mA - The cooling was provided by the four leads and the PCB was made with lots of copper area to dissipate the little heat.
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This was in 2005.

Since then I have tried various designs in lighting streets, gardens, porches and pathways.









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USB Meter - For Measuring Capacity of a USB Power Bank & Other 5V Devices

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You have bought a power bank and are wondering if it really measures up to the advertised Capacity?

Check with this Power Meter.


You can connect it to any USB Power Source like your Power Bank.It will Show you the Output Voltage of the Power Bank - This should be 5VOn the USB Female side you connect your Load.You can then see the Current that the Device Consumes.Leave it on for a while and it can give you an indication of the Power Consumed.  This is also the Power delivered by the source (Could be your Power Bank)
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The Total Energy that can be delivered by your Power Bank = The Capacity of your Power Bank.
Energy (Or Capacity) is the ability for the Power Bank to give X Watts for T Time before it runs out of juice.
Hence TIME is the factor that comes into play to measure the Total Energy that can be delivered by your Power Bank or The Capacity of your Power Bank

Capacity = Total Energy that y…
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