GB1475845A - Ultra low current amplifier - Google Patents

Ultra low current amplifier

Info

Publication number
GB1475845A
GB1475845A GB1946375A GB1946375A GB1475845A GB 1475845 A GB1475845 A GB 1475845A GB 1946375 A GB1946375 A GB 1946375A GB 1946375 A GB1946375 A GB 1946375A GB 1475845 A GB1475845 A GB 1475845A
Authority
GB
United Kingdom
Prior art keywords
capacitor
resistor
deaf
power supply
adjusted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1946375A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Miracle Ear Inc
Original Assignee
Dahlberg Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dahlberg Electronics Inc filed Critical Dahlberg Electronics Inc
Publication of GB1475845A publication Critical patent/GB1475845A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
    • H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/30—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor
    • H03F3/3066—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the collectors of complementary power transistors being connected to the output
    • H03F3/3067—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the collectors of complementary power transistors being connected to the output with asymmetrical driving of the end stage
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/50—Customised settings for obtaining desired overall acoustical characteristics
    • H04R25/502—Customised settings for obtaining desired overall acoustical characteristics using analog signal processing

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
GB1946375A 1974-05-09 1975-05-08 Ultra low current amplifier Expired GB1475845A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US46852574A 1974-05-09 1974-05-09

Publications (1)

Publication Number Publication Date
GB1475845A true GB1475845A (en) 1977-06-10

Family

ID=23860155

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1946375A Expired GB1475845A (en) 1974-05-09 1975-05-08 Ultra low current amplifier

Country Status (5)

Country Link
JP (1) JPS50151404A (enExample)
CH (1) CH596728A5 (enExample)
DE (1) DE2517993A1 (enExample)
DK (1) DK200975A (enExample)
GB (1) GB1475845A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2139032A (en) * 1983-04-26 1984-10-31 Citizen Watch Co Ltd Low power consumption power amplifier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2139032A (en) * 1983-04-26 1984-10-31 Citizen Watch Co Ltd Low power consumption power amplifier

Also Published As

Publication number Publication date
DK200975A (da) 1975-11-10
JPS50151404A (enExample) 1975-12-05
DE2517993A1 (de) 1975-11-27
CH596728A5 (enExample) 1978-03-15

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee