Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1979-06-25
1982-02-09
Zazworsky, John
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307351, 307562, 307565, 307261, 324103P, 328171, H03K 5153
Patent
active
043152201
ABSTRACT:
A peak detector circuit particularly adapted for recovering timing and data information in a binary recording system. The circuit comprises an operational amplifier having a diode-plus-resistor bridge network in a negative feedback path from the output of the operational amplifier to its inverting input. The non-inverting input of the operational amplifier is connected to a common ground. The signal whose peak is to be detected is capacitively coupled to the op-amp's inverting input and the peak detector's output is obtained at the op-amp's output. The diode bridge network comprises two pairs of diodes connected in series and a resistor to ground from the connection node of the diode pairs; in each diode pair the two diodes are connected in parallel, back-to-back. When a peak is detected, the op-amp output switches between positive and negative saturation values. This circuit has maximum gain at the signal peaks and exhibits decreased gain (and, hence, sensitivity to noise) as the signal moves off its peak; it is fast to detect the presence of a peak and presents a fixed phase delay.
REFERENCES:
patent: 3048717 (1962-08-01), Jenkins
patent: 3805170 (1974-04-01), Dusheck, Jr.
patent: 3895237 (1975-07-01), Harr
Digital Equipment Corporation
Zazworsky John
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