Testing the TK Tar Baby

[WilbyInebriated]

This would change the "bounce up" voltage potential when current flows through the circuit as compared to the function generator/50-ohm resistance.

MileHigh

LMFAO!  you just failed your own 'lingo litmus test'.  bounce up... that's hilarious.

and turn on voltage is now the 'floor'... or 'ceiling'. 

pretenders to wisdom...

[TinselKoala]

I agreed some time ago that the FG wasn't charging the batteries appreciably. I wasn't sure if it was contributing to heating the load much, though.  Certainly it's not able to contribute much to the high-heat, positive gate drive pulse mode with Q1 mostly on. That's why I said it would be OK with me for the NERDs to go ahead and use the FG for testing, as long as they used the high-heat, positive gate pulse mode that showed some amps on the CVR trace. Run it like that for 72 hours, using a 72 volt battery pack. No fans or modifications to the Q1 heatsink allowed, though, and a mosfet failure counts as a test failure. Then, after 72 hours maintaining the +12 volt gate drive impulses-- or better yet steady state -- do the Dim Bulb trials.

Or, more realistically, since I know that the Q1 couldn't take the strain under those conditions... they can use the 48 volt pack as in the video. So use the FG if it will speed up their test schedule, by all means. If the batteries don't run down while using the FG and heating the load to high heat, perhaps there is something we've missed, and so then a plain battery bias or 555 circuit could be tried -- if necessary.

[MileHigh]

The Chet-monster speaks.

[picowatt]

LMFAO!  you just failed your own 'lingo litmus test'.  bounce up... that's hilarious.

and turn on voltage is now the 'floor'... or 'ceiling'. 

pretenders to wisdom...

Wilby,

His description of the action/effect was, however, quite accurate.

PW

[WilbyInebriated]

Wilby,

His description of the action/effect was, however, quite accurate.

PW

that's irrelevant to his lingo litmus test.