Just for fun, the audiophile light amplifier
Was reading about that audio tube, and wondering
You now, clean energy, solar etc...
So what if transmissive modulated changing LCD panel light voltage / current sun O -->-- light -->-- [] -->-- ->- --->--- Ge photo diode -->-- ->- --->--- headphones. | input voltage
The idea, you need almost no energy to flip the state of the LCD from transmissive to black. A Ge photo diode, use an old OC13 with the paint stripped of, or any other like that:
Real environmental clean audio power!
The LC panel will have to be fast enough though, 1 mS ~ 1000 Hz, so bass will be good ..
The soft noize from the sun gives the audio just that extra dim-mansion.