Electric OU: Why Are Tar Baby’s Batteries Apparently Drooping?
Why are Tar Baby’s batteries drooping? I have the same oscillations, the same magic mosfets, the same this and the same that, I have heating of the load… but my cheapo DMMs are not…
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Electric OU: Tar Baby and the Dim Bulb Test, Part 3
(no audio) Gaah…. I ran out of disk space during the test and the timelapse failed. I was able to salvage some of the frames, though. Here you can see the 4 Tar Baby…
Electric OU: Tek DPO meets Tar Baby for a PlayDate
A simple basic hookup, Tar Baby’s “usual suspects” engaging the Tek 4034 Digital Phosphor Oscilloscope. Upper trace, yellow, is across the 0.25 Ohm CVR. The purple trace is on the battery terminals, directly, plus…
Electric OU: Supplement: Tar Baby’s Capacitor Bank
Some question may exist about the capacitance value of the bank used to power Tar Baby. This bank of electrolytic caps powers Tar Baby with no batteries, and can be used to illustrate the…
Electric OU: Tar Baby is in Good Health
After our recent mishap last week when I was trying to use the Ainslie component destroyer to drive my new Tesla coil resonator…. some people have been worried about their favorite little briar patch…
Electric OU: Effect of Some Added Inductance at Tar Baby’s Battery
PLEASE NOTE: IN THE VIDEO I MISLABELLED THE INDUCTANCE. It’s really 28 MICROHenry, not 28 nanoHenry. Thanks to .99 for “poynting” this out !! Want massive OU and battery charging too? Just add all…
Electric OU: Tar Baby and Tex (the Tektronix DSO) Go On Another Play Date
The Tektronix DSO’s math functions are used to demonstrate the negative mean power product in two ways: the raw mean and “mean of means” is computed for the math trace, and also the Areas…
Electric OU: Tar Baby is Eager To Please
Enthusiastic after the last Play Date, Tar Baby shows both almost completely undistorted oscillations, nearly perfectly sinusoidal waveforms using the 555-based voltage inverting charge pump system. Then, in another demonstration of the negative voltage…
Electric OU: Tar Baby and the Coup de Grace
More quantitative scoposcopy of the Tar Baby’s current viewing resistor (“shunt”). Now that I have shown instrument calibrations and have explained the bias current and the oscillations using the meters and the oscilloscope, the…
Electric OU: Tar Baby / NERD Circuit MOSFET Stress Test
The IRFPG50 is one tough transistor. Erratum: The duty cycle changed when I changed the range setting on the FG, and did not preserve the approx. 20 percent I had dialed in. Instead the…