Testing the TK Tar Baby

[TinselKoala]

@PW:

The 503 is still running stably and beautifully, has been on for at least 12 hours now and no sign of badness from the RS xfmr. I've posted a video showing it making Lissajous figures in X-Y mode... something I can't do with the HP180 without an external attenuating amplifier.

(Is that an oxymoron? Should I have said, an amplifier and a step attenuator? Oh well you at least know what I mean.)

[picowatt]

@PW:

The 503 is still running stably and beautifully, has been on for at least 12 hours now and no sign of badness from the RS xfmr. I've posted a video showing it making Lissajous figures in X-Y mode... something I can't do with the HP180 without an external attenuating amplifier.

(Is that an oxymoron? Should I have said, an amplifier and a step attenuator? Oh well you at least know what I mean.)

TK,

I hope the RS xfmr continues to perform well for you.   I saw the video.  I wouldn't want to have to try to explain to "someone", what and how how actual measurements can be made in that mode.  I'll just stick with they're very pretty and mesmerizing!

I apologize for being off topic discussing o'scopes, t'scopes, and surplus supply every now and again.  In the last and only other thread I participated in, the topic changed directions "like the wind".

Regarding the TB, it would be interesting to test .99's simulation/calculation results regarding the use of the true battery voltage making the mean neg pwr fade away.  The batteries could be heavily decoupled/bypassed with caps to eliminate any osc across the batt.  Additional wire length could be placed between the batt and board to replace the lost L to maintain osc if required.

Two test runs/calculations with the batt probe at the board's batt connection in one test and directly at the batt in another might be very telling. 

Regarding last night's discussions and the eventual answering of my three questioms, I am, quite frankly, just plain flabbergasted.

PW



 


   

[TinselKoala]

Flabbergasted? Already? Wait until you've been dealing with it for three years.   

I'll try to do the demonstrations you have suggested but I can't say when. Soon, though.

Meanwhile, here's a little more fuel for the fire.

http://www.youtube.com/watch?v=HIruX5_Hc-o

Function Generator as Current Source.

Notice: at no time do my hands leave my wrists. And I'll not say how long it took me to stuff a toy monkey with a battery inside that yellow box.

[TinselKoala]

PW said,

I wouldn't want to have to try to explain to "someone", what and how how actual measurements can be made in that mode.

You don't mean actual measurements of the _phase relationship_ between two signals, do you? How on earth could an analog scope do _that_? Golly. It doesn't even have numbers in boxes. How anyone could claim to do actual measurements on that piece of broken junk is beyond me. Just another example of TK's misdirection and calumny, obviously. And look at that lighting! Clearly he has something to hide.



Too bad its bandwidth is so low....



and

I apologize for being off topic discussing o'scopes, t'scopes, and surplus supply every now and again.  In the last and only other thread I participated in, the topic changed directions "like the wind".

You certainly don't have to apologise to _me_ for discussing highly technical topics that interest us both. And you don't have to worry in the least about Rosemary's snide objections to these "off topic" discussions... because they are only off "her topic" and after all... I am the one who started this thread.



(She's prolly gonna flame you for that "american zed" though. My spellchecker is crazy... it even flags "spellchecker".)

[picowatt]

Flabbergasted? Already? Wait until you've been dealing with it for three years.   

I'll try to do the demonstrations you have suggested but I can't say when. Soon, though.

Meanwhile, here's a little more fuel for the fire.

http://www.youtube.com/watch?v=HIruX5_Hc-o

Function Generator as Current Source.

Notice: at no time do my hands leave my wrists. And I'll not say how long it took me to stuff a toy monkey with a battery inside that yellow box.

TK,

Total obfuscation!  You obviously are using a jet of air from off camera to make the little tape flag spin the motor.

PW