Electric OU: Supplement: Negative Biased MOSFET Part 4a&b
Please watch Parts 1, 2, 3, and 4 first, if you don’t know already what is going on.
Here I’ve shortened the mosfet wires and the battery interconnecting jumpers to show that the oscillations don’t necessarily depend on them.
I repeat the demonstration of the negative drive from the Function Generator, including a frequency determination of the oscillation frequency.
Then I remove the FG and use a 12 volt battery, a resistor and a light bulb to provide a constant negative bias current in place of the FG. The oscillations are shown and their frequency is measured to be the same as when the FG was used.
Further, the little light bulb is shown to be lit dimly, proving that there is current passing, overall, through the FG, which is acting both as a series power supply (when its Red lead goes negative) and a 50 R impedance to the flow of current through the batt pos rail-load-drain-source-FG-batt neg rail loop.