US PATENT SUBCLASS 331 / 137
.~ With R.C. ladder-type phase shift network

Current as of: June, 1999
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331 /   HD   OSCILLATORS

135  DF  PHASE SHIFT TYPE {2}
137.~ With R.C. ladder-type phase shift network

DEFINITION

Classification: 331/137

(under subclass 135) Oscillators wherein the amplifier and the passive phase shifting network each have a total phase shift other than zero or 360 degrees, and wherein the passive phase shifting network is of the ladder-type consisting only of resistive and capacitive components. Usually the amplifier and the passive phase shifting network each have a total phase shift of 180 degrees.