Solar analog radio

At your risk.


Very small, a few inch by few inch, solar panels can power analog radios, small battery powered keyboards etc by sun energy in real time.


Portable analog radios are marvels of engineering. Made in 70s, 80s at a time when batteries of less capacity were available. The power consumption is so small (a handful of watts) that with modern alkaline batteries they can play for weeks.


As of writing this post, a rather big Roberts R900 radio is playing in realtime by sun energy. 2 solar panels were placed long time ago at it back with blue tak. It still works after all those years.


The solar panels used were bought from eBay from sellers in China. They are monocrystaline high efficiency.


A small one can power a Yamaha PSS-14. They was use in a simple experiment of Orchestre Solaire.


The same small solar panel can power a JVC Nivico 9425W cassette radio.


Sound quality is excellent. As the sun is the most DC (for so many million years) energy source one can find on our solar system.


Gravity is another great DC source. For example gravity driven turntables? Example on recording is the EMI 78rpm wax disc cutting lathe in Abbey Road. A weight is going down losing its potential energy to kinetic energy while turntable is turning.