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Originally Posted by Fred
Looking at the schematic it is even more obvious now that the "ionic chamber" is only here to make people think there is something special to this device...
(Making us think it works like a particle detector, with only 27v and directly connected to the base of the transistor is nonsense )...
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Hi Fred,
In Geo's most recent schematic, the ion chamber 27v is coupled to Q1 by a capacitor. No direct connection.
You see it also sent to TR2 at the output of Q1, which Geo marked as "20 MHz". See Geo's recent schematic redrawn for easier reading below.
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Originally Posted by FrancoItaly
Hi J_Player
Yes it's possible in the assembly code to control for example every 50 mS if the output of the comparators change, remember the 10 hZ frequency generated from the microprocessor...My doubts are the lack of a TR stage and a TR coil, infact in all my instruments I use an oscillator that drives a coil principally to have a stable signal in the RX stage. In the case of Mineoro perhaps the 10 Hz signal is used as "chopper" circuit.
Best regards
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You are correct. There are many ways to code the processor. It could be coded for simple comparator against a reference, or maybe coded for complex signal conditioning and extraction.
One theme that comes to mind is to examine a particular segment of each cycle of a repeating wave form.
Using a processor, the coding could look at various frequencies within a range and find the part of the wave form to examine.
Or maybe it would be easier to cause the beeper to make random beeps when neither input has risen above a voltage threshold after a time interval passed.
If the 10 Hz was intended as a chopper, then it is chopping from 27v to 22v differential. Not quite the same as 0 - 5v.
Following the circuit, we see one end of the ion chamber is connected to 27v, and is also coupled to the receiver loop input via capacitor.
According to Mineoro theory, sparks with a certain "gold DNA" will become part of the signal at Q1.
If these sparks don't arrive from passionate gold ions, then maybe some noise from the 10 Hz signal switching will arrive at Q1?
Is the 10 Hz intended to be the stable signal in the Mineoro concept?
Does noise from the 10 Hz switching make some odd signal in the coils?
Best wishes,
J_P