Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
  • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
  • H02H3/40—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to ratio of voltage and current
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
  • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
  • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
  • G01R27/08—Measuring resistance by measuring both voltage and current
  • G01R27/10—Measuring resistance by measuring both voltage and current using two-coil or crossed-coil instruments forming quotient
  • G01R27/12—Measuring resistance by measuring both voltage and current using two-coil or crossed-coil instruments forming quotient using hand generators, e.g. meggers
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06G—ANALOGUE COMPUTERS
  • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
  • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
  • G06G7/16—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division
  • G06G7/161—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division with pulse modulation, e.g. modulation of amplitude, width, frequency, phase or form

Landscapes

• Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• General Physics & Mathematics (AREA)
• Mathematical Physics (AREA)
• Theoretical Computer Science (AREA)
• Power Engineering (AREA)
• Software Systems (AREA)
• Computer Hardware Design (AREA)
• Measurement Of Resistance Or Impedance (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=4378000

Family Applications (1)

Country Status (4)

Families Citing this family (2)

• 0
  • NL NL268786D patent/NL268786A/xx unknown
• 1960
  • 1960-10-25 CH CH1190260A patent/CH383494A/de unknown
• 1961
  • 1961-10-23 BE BE609464A patent/BE609464A/fr unknown
  • 1961-10-23 GB GB3785761A patent/GB932704A/en not_active Expired

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