DE645618C - - Google Patents

Info

Publication number
DE645618C
DE645618C DE1933R0087902 DER0087902A DE645618C DE 645618 C DE645618 C DE 645618C DE 1933R0087902 DE1933R0087902 DE 1933R0087902 DE R0087902 A DER0087902 A DE R0087902A DE 645618 C DE645618 C DE 645618C
Authority
DE
Germany
Prior art keywords
buzzer
tube
mechanical
frequencies
membrane
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
DE1933R0087902
Other languages
German (de)
English (en)
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 filed Critical
Priority to DE1933R0087902 priority Critical patent/DE645618C/de
Application granted granted Critical
Publication of DE645618C publication Critical patent/DE645618C/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/10—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being vacuum tube

Landscapes

  • Electrophonic Musical Instruments (AREA)
DE1933R0087902 1933-05-09 1933-05-09 Expired DE645618C (enrdf_load_stackoverflow)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1933R0087902 DE645618C (enrdf_load_stackoverflow) 1933-05-09 1933-05-09

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1933R0087902 DE645618C (enrdf_load_stackoverflow) 1933-05-09 1933-05-09

Publications (1)

Publication Number Publication Date
DE645618C true DE645618C (enrdf_load_stackoverflow) 1937-05-31

Family

ID=576898

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1933R0087902 Expired DE645618C (enrdf_load_stackoverflow) 1933-05-09 1933-05-09

Country Status (1)

Country Link
DE (1) DE645618C (enrdf_load_stackoverflow)

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