3447050

Information

• Patent Grant
• 3447050

• References
• Source

• Patent Number

  3,447,050

• Date Filed

  Not available

• Date Issued

  Tuesday, May 27, 1969
  55 years ago

• CPC

  • H02P5/50 - by comparing electrical values representing the speeds
  • D21F7/02 - Mechanical driving arrangements
  • H02P5/51 - Direct ratio control
  • H03M1/00 - Analogue/digital conversion Digital/analogue conversion
  • H03M2201/01 - First edition
  • H03M2201/194 - Control systems
  • H03M2201/2305 - in which a reference signal sweeps through the range of possible values
  • H03M2201/2333 - in which the reference signal is produced from the digital generator using an auxiliary D/A converter
  • H03M2201/3115 - Simultaneous addition or subtraction of selected values
  • H03M2201/3131 - Direct selection from all possible values
  • H03M2201/3168 - Resistors
  • H03M2201/4135 - Momentary value
  • H03M2201/4212 - Serial
  • H03M2201/4225 - Parallel
  • H03M2201/4233 - Bivalued
  • H03M2201/4262 - Binary radix
  • H03M2201/4279 - Pure
  • H03M2201/60 - Fidelity improvement
  • H03M2201/6114 - Manual
  • H03M2201/8128 - Diodes
  • H03M2201/8132 - Transistors

• US Classifications

  • 318 - Electricity: motive power systems
  • 341 - Coded data generation or conversion
  • 363 - Electric power conversion systems