[Hallicrafters] Piezo effects.. an idea

[Charlie T, K3ICH]

"all those little voltage spikes might add up to something!  "Now, that 
would be," he said, grinning,
> "real political power!"


They actually do something like that with thermocouples* which only generate 
a very small voltage.  A LOT of these dissimilar metal junctions are placed 
so that one end in inside a small chamber fired with propane or other heat 
generating source.  The cumulative series voltages add up to a useful amount 
of energy.

73' Charlie k3ICH



*Thermocouples consist of two dissimilar metals that generate a voltage when 
heated above ambient.  This is a very old method of measuring temperature. 
For example,  a type J thermocouple junction of iron & constantan (industry 
coded red & white wire) will generate a very stable and predictable 30 mV 
when heated to about 1000 degree F.   Many different types of 
thermocouplesare produced from different metals,  each with a different 
useful temperature range and output voltage.  They also have a distinct 
color coded for the wire and connector. The type J uses a black connector 
Another popular one is the type K with the yellow two wire connector seen on 
some measuring instruments that include a temperature readout.  The wires of 
the type K are actually two different alloys of "Chromel & Alumel" 
(Spelling might be a tad off though).