Quote from: picowatt on July 01, 2012, 06:53:28 PM
.99,

Excellent depiction of the FG as utilized in this circuit!

Your time and effort greatly appreciated...

PW

Thanks PW.

The hope is that every little bit will help so all can be on the same page.

Quote from: picowatt on July 01, 2012, 06:53:28 PM
.99,

Excellent depiction of the FG as utilized in this circuit!

Your time and effort greatly appreciated...

PW

Dittoes, and it's perfectly clear why my F43's final output stage got "smoked".

Well, it's raining so I don't want to lug stuff outside. I know how disappointed you "guys" must be, since there has been so much comment so far on my latest set of videos.

So I went and skipped ahead a bit and continued with the inside work, just to keep everybody amused while waiting for the showers to stop.

MOSFETs... how do they WORK?? Part 5a.

http://www.youtube.com/watch?v=pQMPVoqOTNo

Quote from: poynt99 on July 01, 2012, 07:03:27 PM
Thanks PW.

The hope is that every little bit will help so all can be on the same page.

.99,

Possibly label the FG out transistors? ... though we can all use NPN/PNP or upper/lower.

Consider discussing what happens when the output transistors are "fully on", i.e., when the FG is at full negative offset and full positive offset.

If we assume that to be  +/- 14volts output swing for discussion, use 4 volts for Vgs(on) and ignore Rint for now, those numbers will be easy to play with.   

Spoiler alert:  10/50=.2

Also, it should be noted by all that the two bias diodes to the left of the FG output transistors can be ignored regarding these discussions.

Thanks again .99,

PW

(EDIT:  removed "fully saturated" and replaced it with "fully on" for improved clarity)

Quote from: TinselKoala on July 01, 2012, 07:20:18 PM
Well, it's raining so I don't want to lug stuff outside. I know how disappointed you "guys" must be, since there has been so much comment so far on my latest set of videos.

So I went and skipped ahead a bit and continued with the inside work, just to keep everybody amused while waiting for the showers to stop.

MOSFETs... how do they WORK?? Part 5a.

http://www.youtube.com/watch?v=pQMPVoqOTNo

Hey TK

You should probably check for negative wattage at the 4v source. ;]

What might be interesting is to add those capacitance's to the Q1 and Q2 of the Nerd circuit, so we can examine what is really going on during that self oscillation, to slow the oscillation down.

Mags