Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M9/00—Arrangements for interconnection not involving centralised switching
  • H04M9/001—Two-way communication systems between a limited number of parties
• • 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
  • H02H3/08—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 excess current
  • H02H3/087—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 excess current for dc applications
• • 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
  • H02H3/08—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 excess current
  • H02H3/093—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 excess current with timing means
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03F—AMPLIFIERS
  • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
  • H03F3/34—Dc amplifiers in which all stages are dc-coupled
  • H03F3/343—Dc amplifiers in which all stages are dc-coupled with semiconductor devices only
  • H03F3/345—Dc amplifiers in which all stages are dc-coupled with semiconductor devices only with field-effect devices
  • H03F3/3455—Dc amplifiers in which all stages are dc-coupled with semiconductor devices only with field-effect devices with junction-FET's
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03K—PULSE TECHNIQUE
  • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
  • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
  • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
  • H03K3/28—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback
  • H03K3/281—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
  • H03K3/286—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator bistable
  • H03K3/2893—Bistables with hysteresis, e.g. Schmitt trigger

Applications Claiming Priority (4)

Publications (1)

Family

ID=76269552

Family Applications (1)

Country Status (6)

Families Citing this family (3)

Family Cites Families (1)

• 0
  • CA CA701637A patent/CA701637A/en not_active Expired
  • NL NL250981D patent/NL250981A/xx unknown
• 1959
  • 1959-06-11 GB GB20034/59A patent/GB950182A/en not_active Expired
  • 1959-06-11 GB GB39319/63A patent/GB950183A/en not_active Expired
  • 1959-08-27 JP JP2750859A patent/JPS384353B1/ja active Pending
• 1960
  • 1960-06-10 JP JP2719260A patent/JPS384354B1/ja active Pending
  • 1960-06-10 FR FR829644A patent/FR1259724A/en not_active Expired
  • 1960-06-10 DE DEE19460A patent/DE1141333B/en active Pending
• 1961
  • 1961-04-25 DE DEN19939A patent/DE1127407B/en active Pending
  • 1961-04-25 GB GB14915/61A patent/GB936756A/en not_active Expired
  • 1961-04-27 FR FR860009A patent/FR1287248A/en not_active Expired
• 1963
  • 1963-04-22 JP JP1952163A patent/JPS3819521B1/ja active Pending

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