Archive for the ‘Renewable Energy’ Category:

2020-01-29 Fusion Thoughts About The Future, Pros, Cons

So many ideas about the future promises of nuclear fusion power, how it will affect the world. Will nuclear fusion ever become a reality? It remains to be seen. In the meantime we will have to make do with renewable energy, mostly wind and solar. The goal is to greatly reduce use of fossil fuels

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2018-09-03 Nuclear Power Is Not Economical

from YouTube video TEDx talk comment pro nuclear power, see 2018-09-04 To paraphrase an earlier comment: “Wow! Spread the word! There is so much *left*out* with this talk!” Did you notice he left out any mention of the economic aspects of nuclear power generation? There are THREE nuclear power plants that are sitting partially built

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2018-08-30 Using Radio Signal To Power A Receiver

From FB group Building Transistor Radios 2018-09-01 There are too many ‘gotchas.’ You have to put up a large sized antenna to gather enough power to run the circuit. That means you cannot use this in a city where the properties are too small, due to lack of space. You go to the country where

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2018-07-18 Storage Batteries For Renewable Energy Systems

Reply left on comments for a YouTube Ted talk by Sadoway on molten magnesium – molten salt – molten antimony storage battery David Tiessen Long ago I calculated that the number of solar panels to populate such a large area would be in the billions. But saying it would have to be the size of

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2018-06-16 EMS Isolates Itself Off

From FB group Bell Telephone That reminds me of the EMS we had at the college. The original system used RS-485 around campus. So they started using IP over the network. So at the end of Friday in the hot summer, the Energy Management System tells the A/C units on each bldg to shut down.

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2018-05-11 Tesla Battery Bank Saves Aussies 90%

From article in https://electrek.co/2018/05/11/tesla-giant-battery-australia-reduced-grid-service-cost/amp/

2017-06-08 AD Has ADP5090

Ever since I’ve been experimenting with Joule Thiefs I’ve done so with the intention of using the circuit for boosting a low voltage source to power a higher voltage circuit.  So I think this Analog Devices ADP5090 is very useful for doing just that: powering circuits up to 200 mW from very low voltage power

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2015-12-16 JFET Joule Thief

I captured this off a video and tried to make it a bit more readable.  I think it was from Sanjev. I built it and it does work at 40 millivolts.  The 2SK170 JFETs are not common, and may be difficult to obtain.  Other JFETs can be used, but I haven’t tried them.  I wrote

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2015-11-28 Recharging From Used Alkalines

I have often seen schematics of Joule Thief chargers for use in charging Ni-MH rechargeables from used alkaline cells.  The idea is to boost the voltage of the used alkaline cell up to high enough to get current the flow into the Ni-MH cell.  One setback is that conventional JTs are only 50% efficient, so

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2015-11-12 Pedal Power Your Home

I have been into this kind of stuff for quite a while.  You can search my blog for more on this. It’s difficult for even the strongest  of bicyclists to put out 100 watts for a few minutes, let alone an hour.  Assuming that a person could pedal a 100% efficient 50 watts for an

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