Negative resistance better than current source for MOSFET follower amp?

[Nelson Pass]

Bakmeel, it doesn't matter what the load is. The
case of the Aleph creates a -2 times ghost of any
load, any value, any reactance.

[Alice Liddell]

Thank you for your restraint in not posting - which some wags would have found an iresistable urge to do.

Alice

[UrSv]

Exsqueeze me for joining in off topic but Alice, are you a female DIY enthusiast? If that is the case I can only say very welcome indeed!

/UrSv (I told my girlfriend it actually could happen...)

[Nelson Pass]

Sorry, I didn't see there!

[Bakmeel]

Originally posted by Nelson Pass
Bakmeel, it doesn't matter what the load is. The
case of the Aleph creates a -2 times ghost of any
load, any value, any reactance.

I see... The Negative Resistance responds tot the current drawn through R13 and R14 (referring to this schematic). But somewhere I feel this shoe is pinching...
As you already say, it behaves like a negative resistance, but not like a negative reactance. Since it is only looking at the current, it can't respond to complex currents (I mean, when the current is out of phase with the voltage). Or is that absolute gibberish i am talking here?

Bouke

[Bakmeel]

After some reconsiderations and a good shower, I must confess that I am indeed talking gibberisch up here...

I will now go back to my room and think about this schematic....

[jcarr]

http://patft.uspto.gov/netacgi/nph-P...S=PN/5,036,228

Here is Yamaha patent for an interesting temperature compensation circuit, to be used together with negative impedance drivers.

The images are in TIFF format, which you can view on Windows PCs if you install Apple QuickTime.

regards, jonathan carr