[GreenKeys] Insect Spice Model

[Henry Minsky]

I bet the resistance is non-linear. I'm guessing at 100 Amps, it would 
either be zero or infinity...


At 07:00 PM 6/19/2004, Bob Camp wrote:

>Hi
>
>In the continuing quest to adequately model all the aspects of a 
>conventional teleprinter loop we nave established a working model for 
>another aspect of the loop. A common back yard ant crushed in a set of 
>contacts runs about 6.5 K ohms at 240 volts. Capacitance and inductance is 
>negligible. The model seems to hold for voltages down to the milivolt 
>region and up at least to 330 volts peak (the limit of the measurement 
>setup). While extensive modeling over frequency was not performed it is 
>assumed that the model is valid at least up to a few tens of KHz (or tens 
>of Kcps ...).
>
>Both wet and dry keying of the the loop were attempted with the ant in 
>place and results were not encouraging. Further experimentation with 
>contact enhancement in this manner are not anticipated unless our 
>application for a federal grant comes through ....
>
>         Enjoy!
>
>                 Bob Camp
>                 KB8TQ
>
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