Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By frequency
Patent
1994-03-11
1996-08-13
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By frequency
327 39, 327 47, 327 49, 327 74, H03D 1300
Patent
active
055460259
ABSTRACT:
The present invention relates to a low frequency discriminator circuit comprised if apparatus for providing a rectangular wave input signal, apparatus for integrating the input signal, apparatus for detecting whether the integrated input signal falls between upper and lower thresholds respectively, and apparatus for providing an output signal indicating when the integrated input signal falls between the thresholds, whereby the frequency of the input signal may be determined to be between higher and lower limits.
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Callahan Timothy P.
Mitel, Inc.
Wands Charles E.
Wells Kenneth B.
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