Wednesday, September 2, 2015

Can a Pleiades electron tube Preamplifier be used by NASA as front end detector?


The Pleiades pre amplifier is different in 3 respects.


1 It uses positive bias from plate (anode) to grid via an external high Megohm resistor allowing an electron tube to operate as a low noise-figure amplifier at very small power supply voltage (<10V).


2 It deliberately uses reduced heater voltage reducing electron "boiling" cloud around the cathode which seems to obstruct information extraction.


3 Low voltage operation permits the use of battery or solar panel supply which is the quietest source of energy on our planet with very high bandwidth.


Hopefully the circuit may be a basis of beneficial experiments as a front end preamplifier. This may lead to better resolution pictures on radio telescopes or delving deeper into the past, amplifying the faintest signals of the univesce coming electromagnetically from space.







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