Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1978-03-08
1979-11-27
Zazworsky, John
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307261, 307358, 307362, 325348, 325478, H03K 5153
Patent
active
041762860
ABSTRACT:
Input tone signals are supplied to a square wave generator for producing square wave output signals corresponding to the tone signals. The square wave generator includes an operational amplifier having a tone signal input and a control signal input for receiving a first control voltage for activating the amplifier and a second control voltage for squelching the amplifier. The control voltages are produced by squelch control voltage generating means for receiving the input tone signals and producing the first control voltage when the tone signals exceed a predetermined level, while producing the second control voltage when the input tone signals are less than such predetermined level. The squelch control voltage generating means may include rectifying means for producing a rectified direct current signal in response to the tone signals, integrating means for producing an integrated direct current signal in response to the rectified direct current signal, and comparator means for receiving the integrated direct current signal and producing the first control voltage when the integrated direct current signal exceeds an established level, while producing the second control voltage when the integrated direct current signal is less than the established level. These squelch control voltage generating means may also include regulating means for regulating and limiting the magnitude of the integrated signal in excess of the established level. Such regulating means may employ a Schottky diode connected to the integrating means.
REFERENCES:
patent: 2681989 (1954-06-01), Cunniff
patent: 3332021 (1967-07-01), Hedlund
patent: 3336533 (1967-08-01), Glasser
BEI Electronics, Inc.
Zazworsky John
LandOfFree
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