3626264

Information

• Patent Grant
• 3626264

• References
• Source

• Patent Number

  3,626,264

• Date Filed

  Not available

• Date Issued

  Tuesday, December 7, 1971
  53 years ago

• CPC

  • G11B21/12 - Raising and lowering Back-spacing or forward-spacing along track Returning to starting position otherwise than during transducing operation
  • G01P3/46 - by measuring amplitude of generated current or voltage
  • G05D3/1409 - with dc amplifier chain
  • G05D3/1463 - using PID devices
  • H02P7/2855 - whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value
  • H02P7/2885 - whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value
  • Y10S388/91 - Operational/differential amplifier
  • Y10T307/406 - Control of current or power

• US Classifications

  • 388 - Electricity: motor control systems
  • 307 - Electrical transmission or interconnection systems
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER