Classifications

• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
  • H03L5/00—Automatic control of voltage, current, or power
• • G—PHYSICS
  • G10—MUSICAL INSTRUMENTS; ACOUSTICS
  • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
  • G10H1/00—Details of electrophonic musical instruments
  • G10H1/46—Volume control
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03F—AMPLIFIERS
  • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
  • H03F3/04—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only
  • H03F3/08—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only controlled by light
• • H—ELECTRICITY
  • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
  • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
  • H10F99/00—Subject matter not provided for in other groups of this subclass

Landscapes

• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Acoustics & Sound (AREA)
• Multimedia (AREA)
• Power Engineering (AREA)
• Amplifiers (AREA)
• Electrophonic Musical Instruments (AREA)
• Toys (AREA)
• Light Receiving Elements (AREA)
• Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
• Control Of Amplification And Gain Control (AREA)
• Optical Recording Or Reproduction (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=19784593

Family Applications (1)

Country Status (7)

Family Cites Families (1)

• 0
  • NL NL107295D patent/NL107295C/xx active
  • NL NL193174D patent/NL193174A/xx unknown
  • BE BE543553D patent/BE543553A/xx unknown
• 1955
  • 1955-12-09 GB GB35401/55A patent/GB828688A/en not_active Expired
  • 1955-12-09 DE DEN11575A patent/DE1046100B/de active Pending
  • 1955-12-10 JP JP3210055A patent/JPS335064B1/ja active Pending
  • 1955-12-12 FR FR1144663D patent/FR1144663A/fr not_active Expired
  • 1955-12-12 CH CH337573D patent/CH337573A/de unknown

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