(under subclass 155) Subject matter wherein particular magnetic components or components used at very low temperatures near absolute zero form an essential part of an analog to digital conversion.
(1) Note. Excluded from this subclass are ordinary transformers used in power supplies or for signal coupling or inductances used for filtering or decoupling.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15, for a digital pattern reading type converter having a magnetically read pattern.
149, for a digital to analog or an analog to digital combined with a digital to analog converter having magnetic or cryogenic components.
SEE OR SEARCH CLASS
235, Registers, 499+, for magnetic coded record sensors.
307, Electrical Transmission or Interconnection Systems,
401+, for nonlinear saturable reactor systems.
360, Dynamic Magnetic Information Storage or Retrieval,
39+, for magnetic recording or reproduction of a digital signal.
