Testing the TK Tar Baby

[TinselKoala]

TK,

Does Maggie have enough chow to have the purple tongue?  Great dogs.  I am trying to picture in the coyote.  Around here the coyotes are a skinny, somewhat scroungey looking critter.

After all that "independence", your lucky she's taking a shine to you...

PW

PS.. you'll hve to have Maggie narrate a video!!

Her tongue is about 1/3 purple. Her tapetums have a very odd color for a dog, more coyote or wolf-like when she stares at you in the dark with those glowing eyes.
We made a video called "dogs can't talk" that's on my channel underneath all the OU stuff somewhere.

[picowatt]

Her tongue is about 1/3 purple. Her tapetums have a very odd color for a dog, more coyote or wolf-like when she stares at you in the dark with those glowing eyes.
We made a video called "dogs can't talk" that's on my channel underneath all the OU stuff somewhere.

TK,

I just watched the video.  Maggie is a great looking dog.  Love those ears and that tail.

And yes, she sure can talk!

PW

[MileHigh]

PW:

Yes thanks for reminding me that the "bounce up" is a form of negative feedback.  I am getting a bit rusty in general.  I never did much analog design or bench work but I took all the courses going on 30 years ago.

MileHigh

[picowatt]

PW:

Yes thanks for reminding me that the "bounce up" is a form of negative feedback.  I am getting a bit rusty in general.  I never did much analog design or bench work but I took all the courses going on 30 years ago.

MileHigh

MH,

No problem, I knew exactly what you meant and your description was both intuitive and accurate.

PW

[hartiberlin]

Tk,

okay, your last circuit diagramm
http://www.overunity.com/12182/testing-the-tk-tar-baby/dlattach/attach/98077/
is not much different than mine, only that you connect the plus pole of the 9 Volt battery still
behind the shunt and I before the Rshunt resistor...

Okay, so the voltage on the Rshunt seems to matter...

Okay, so lets use your circuit from now on.

But in your circuit, when you have the pot tap at about the center there also can not
flow 200 mA !

At best about maybe 10 milliAmps as the 9 Volt battery then sees at maximum 5 Kohm resistance
if you don´t turn the knob on the pot almost to one of the ends... but as you said,
it needs -4 Volts it surely is in the center. so no low resistance for the 9 Volts battery...

ALso this Q1 and Q2 is mostly a multivibrator circuit in selfrunning mode (without LRC units, just the wire lenghts),
so you would only draw mainly AC from the 9 Volt battery.

Maybe you can show just the voltage on your 10R to 50R Ohm pre-resistor, then you will probably see,
that there is not flowing 200 mA !

Regards, Stefan.