Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M19/00—Current supply arrangements for telephone systems
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
  • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
  • G05F3/02—Regulating voltage or current
  • G05F3/08—Regulating voltage or current wherein the variable is dc
  • G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
  • G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
  • G05F3/18—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using Zener diodes
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
  • Y02D30/00—Reducing energy consumption in communication networks
  • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Nonlinear Science (AREA)
• Electromagnetism (AREA)
• General Physics & Mathematics (AREA)
• Radar, Positioning & Navigation (AREA)
• Automation & Control Theory (AREA)
• Signal Processing (AREA)
• Direct Current Feeding And Distribution (AREA)
• Control Of Electrical Variables (AREA)
• Amplifiers (AREA)
• Interface Circuits In Exchanges (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
• Electron Sources, Ion Sources (AREA)
• Air Bags (AREA)
• Cold Cathode And The Manufacture (AREA)
• Emergency Protection Circuit Devices (AREA)
• Continuous-Control Power Sources That Use Transistors (AREA)

Applications Claiming Priority (2)

Publications (3)

Family

ID=9133932

Family Applications (1)

Country Status (13)

Families Citing this family (4)

Family Cites Families (5)

• 1974
  • 1974-01-24 FR FR7402402A patent/FR2259394B1/fr not_active Expired
• 1975
  • 1975-01-09 BE BE1006379A patent/BE824211A/xx not_active IP Right Cessation
  • 1975-01-20 FI FI750121A patent/FI59883C/fi not_active IP Right Cessation
  • 1975-01-21 NL NL7500665A patent/NL7500665A/xx not_active Application Discontinuation
  • 1975-01-22 DE DE19752502527 patent/DE2502527A1/de not_active Withdrawn
  • 1975-01-22 US US05/543,046 patent/US3978391A/en not_active Expired - Lifetime
  • 1975-01-22 IT IT19496/75A patent/IT1031081B/it active
  • 1975-01-22 NO NO750190A patent/NO143885C/no unknown
  • 1975-01-23 GB GB293375A patent/GB1461235A/en not_active Expired
  • 1975-01-23 BR BR479/75A patent/BR7500479A/pt unknown
  • 1975-01-23 DK DK20475AA patent/DK142662B/da unknown
  • 1975-01-23 CA CA218,475A patent/CA1035837A/en not_active Expired
  • 1975-01-24 JP JP50009895A patent/JPS50103665A/ja active Pending

Also Published As

Similar Documents