Detecting circuit

Details Detecting circuit Detecting circuit

1996-07-03

1998-09-08

Tran, Toan

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327104, 327354, 327325, G01R 1900, G06G 725

Patent

active

058049932

ABSTRACT:
An inputted signal applied to an input terminal of a detecting circuit is rectified in a positive amplitude range thereof by a rectifier block and stored in a capacitor. In a negative amplitude range, the electric energy stored in the capacitor is discharged through a load block. The rectifier block and the load block have equal impedances, and hence a time constant when the capacitor is charged is equal to a time constant when the capacitor is discharged. A DC signal outputted from an output terminal of the detecting circuit has a level which is the same as the average power level of the inputted signal. The detecting circuit is capable of outputting a DC signal which is accurately representative of the power level of the inputted signal.

REFERENCES:
patent: 3020420 (1962-02-01), Smee
patent: 3611164 (1971-10-01), Day
patent: 3748492 (1973-07-01), Baker
patent: 3916221 (1975-10-01), Boyer
patent: 4605864 (1986-08-01), Varadarajan et al.

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