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Julian on June 25th, 2013

There’s an incredibly exciting project going on in the village of Malembo in Uganda. Solar panels are being used to generate electricity which is being distributed to local businesses and individuals to provide light, and power to charge phones. Two PWM5 Solar Charge Controllers are keeping the battery charged. Read the full story at Julian [...]

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Julian on June 2nd, 2013

The PWM5 Solar Charge Controller is ideally suited for use in recreational vehicles such as boats, caravans and motorhomes. Ultra-low power consumption, 100% waterproofing and flexible multi-controller configurations are three of the benefits. Let’s look at each in turn. The controller draws just 1 milliamp from the battery it’s protecting, so it can be left [...]

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Julian on April 11th, 2013

Here is the transcript of a recent email exchange I had with one of my customers:   PWM5 was working perfectly until I disconnected battery bank (boat). Cannot get LED working again even though controller part seems fine. Have reconnected and waited 2+ seconds before disconnecting battery again and reconnecting. No LED. Please help. Many [...]

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Julian on March 11th, 2013

I’m sorry, but I’m not a fan of rechargeable electric cars. The car buying public simply won’t embrace electric vehicles until they can re-fuel them in under 5 minutes – the same amount of time it takes to re-fuel a petrol or diesel motor. There is a system that replaces the entire battery pack using [...]

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Julian on June 25th, 2012

At some point during the last few days, someone bought the 500th PWM5 Solar Charge Controller. I can’t say who it was exactly because I’m not completely sure. I’ve kept a few controllers back for my own experiments, so the numbers have got a bit confused. What I do know is that I’ve just opened [...]

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Julian on May 29th, 2012

If you’re serious about surface mount components, you need a pick and place machine. By serious, however, I mean really serious! A quick check on eBay and there’s a second hand one for £10,000. There are companies in the UK that have these machines and who offer a PCB assembly service. But the set up [...]

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Julian on May 27th, 2012

Another area where solar power can be put to good use is with cordless power tools. Twelve volt tools are available, but the better, more powerful tools use 18-volt batteries. The trick is to look for a range of tools which have an optional in-car charger. The Ryobi CB-18CL In-Car Charger is an example. This [...]

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Julian on February 11th, 2012

For the solar industry to take off we need grid parity, we’re told. Energy from solar panels as cheap as fossil fuels. The feed-in-tarrif was helping, maybe not so much now. In the US, the holy grail has always been $1 per watt and so the best we can hope to achieve here in the [...]

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