Giantkiller moves forward into Full Heterodyning.

[Feynman]

Humanity is not yet sufficiently advanced to be willingly led by the discover's keen searching sense. But who knows? Perhaps it is better in this present world of ours that a revolutionary idea or invention instead of being helped and patted, be hampered and ill-treated in its adolescence ? by want of means, by selfish interest, pedantry, stupidity and ignorance; that it be attacked and stifled; that it pass through bitter trials and tribulations, through the heartless strife of commercial existence. So do we get our light. So all that was great in the past was ridiculed, condemned, combated, suppressed ? only to emerge all the more powerfully, all the more triumphantly from the struggle.

-Nikola Tesla


Keep up the good work GK

[giantkiller]

I received 30 IRF840 fets in the mail thru Ebay.
I wait on sockets, the 18f8722 pic board and dev environment. The 18f8720 pic board that I bought from futurlec previously for the parallel port doesn't work. The development support software from the winpic800.com had similar problems all over the world.

But, Futurlec.com worked with me to further my efforts and were very helpful. I do recommend them highly and I have ordered from them before.

--giantkiller.

[giantkiller]

Doulbepostdeleted.

--giantkiller.

[Feynman]

GK;  the output of a 555 square wave has rise/fall time on order of 100 ns.

Do you know if the can IRF840 switch that fast?

[giantkiller]

GK;  the output of a 555 square wave has rise/fall time on order of 100 ns.

Do you know if the can IRF840 switch that fast?

Turn on time = 35ns
Rise time = 15ns
Total on settling = 50 ns

Turn off delay time = 90
Fall time = 35
Total off settling time = 125ns

with 1us on time and 1 us off time

1000ns
1000ns
50ns
125ns
2175ns

max f = 1/.000002175 = 500khz

A starting point of 245khz on down will give adequate range for the other 2 harmonics of the 3 notes in the ionizer setup, the Phi document or the Rosslyn Chapel motet.

--giantkiller.