US PATENT SUBCLASS 331 / 140
.~ R.C. or R.L. type

Current as of: June, 1999
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331 /   HD   OSCILLATORS

138  DF  BRIDGE TYPE {2}
140.~ R.C. or R.L. type {2}
141  DF  .~.~> Wien bridge
142  DF  .~.~> Double T bridge

DEFINITION

Classification: 331/140

(under subclass 138) Oscillators wherein the feedback network includes only capacitance and resistance elements or inductance and resistance elements for determining the generated frequency of the oscillator.

SEE OR SEARCH THIS CLASS, SUBCLASS:

111+, for transistor relaxation oscillators utilizing RC or RL timing networks.

129+, for gas tube relaxation oscillators utilizing RC or RL timing networks.

137, for phase shift oscillators with RC ladder type phase shift network.

143, for relaxation oscillators in general utilizing RC or RL timing networks.