GB1195124A - Miniaturized Metronome with Earphone. - Google Patents

Miniaturized Metronome with Earphone.

Info

Publication number
GB1195124A
GB1195124A GB4021867A GB4021867A GB1195124A GB 1195124 A GB1195124 A GB 1195124A GB 4021867 A GB4021867 A GB 4021867A GB 4021867 A GB4021867 A GB 4021867A GB 1195124 A GB1195124 A GB 1195124A
Authority
GB
United Kingdom
Prior art keywords
earphone
loud
speaker
transistor
capacitor
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
GB4021867A
Inventor
Robert Dudley Veech
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB4021867A priority Critical patent/GB1195124A/en
Publication of GB1195124A publication Critical patent/GB1195124A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
    • G04F5/02—Metronomes
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
    • G04F5/02—Metronomes
    • G04F5/025—Electronic metronomes

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

1,195,124. Transistor oscillating circuits. R. D. VEECH. 2 Sept., 1967, No. 40218/67. Heading H3T. [Also in Divisions G3 and G4] An electronic circuit for a metronome (see Division G3) comprises a capacitor 14 charged by current passing through resistors 16, 18 until a transistor 12 conducts which in turn causes a transistor 10 to conduct thereby allowing the capacitor to discharge through a loud-speaker 70 or an earphone 44. The discharge of the capacitor produces an audible click in the earphone or loud-speaker and the click frequency may be varied in the range 40-208 beats/ minute by adjusting a resistor 18. On plugging in the earphone, the loud-speaker is automatically switched out of the circuit, however a monitor switch 25 enables the sounds to be produced in both the earphone and the loudspeaker.
GB4021867A 1967-09-02 1967-09-02 Miniaturized Metronome with Earphone. Expired GB1195124A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4021867A GB1195124A (en) 1967-09-02 1967-09-02 Miniaturized Metronome with Earphone.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4021867A GB1195124A (en) 1967-09-02 1967-09-02 Miniaturized Metronome with Earphone.

Publications (1)

Publication Number Publication Date
GB1195124A true GB1195124A (en) 1970-06-17

Family

ID=10413801

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4021867A Expired GB1195124A (en) 1967-09-02 1967-09-02 Miniaturized Metronome with Earphone.

Country Status (1)

Country Link
GB (1) GB1195124A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5463667U (en) * 1977-10-07 1979-05-04

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5463667U (en) * 1977-10-07 1979-05-04

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees