Boots – shoes – and leggings
Patent
1995-03-31
1996-12-24
Voeltz, Emanuel T.
Boots, shoes, and leggings
340636, 320 2, H02J 700
Patent
active
055879241
ABSTRACT:
The present invention is related to a battery type determination circuit having a notch filter circuit which notches a frequency noise spectrum to indicate a battery type installed in a battery pack. More specifically, the preferred embodiment of the present invention can determine a variety of battery characteristics based on the notched frequency and look-up information stored in a memory chip.
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Drexler, R. G. et al. "Notch Filter Instrument for Measuring ELF(Extremely Low Frequency) MSK (Minimum Shift Keying) Signal (Technical rept.)" Abstract only; IIT Research Inst., Chicago, IL Jan. 1988.
Compaq Computer Corporation
Shah Kamini
Voeltz Emanuel T.
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