FR903247A - High frequency electrical oscillations generator circuit - Google Patents

High frequency electrical oscillations generator circuit

Info

Publication number
FR903247A
FR903247A FR903247DA FR903247A FR 903247 A FR903247 A FR 903247A FR 903247D A FR903247D A FR 903247DA FR 903247 A FR903247 A FR 903247A
Authority
FR
France
Prior art keywords
high frequency
generator circuit
frequency electrical
electrical oscillations
oscillations generator
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
Other languages
French (fr)
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.)
Patelhold Patenverwertungs and Elektro-Holding AG
Original Assignee
Patelhold Patenverwertungs and Elektro-Holding AG
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 Patelhold Patenverwertungs and Elektro-Holding AG filed Critical Patelhold Patenverwertungs and Elektro-Holding AG
Application granted granted Critical
Publication of FR903247A publication Critical patent/FR903247A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezo-electric or electrostrictive material
    • H03H9/545—Filters comprising resonators of piezo-electric or electrostrictive material including active elements
    • 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
    • H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
    • H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
    • H03B5/34—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being vacuum tube
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezo-electric or electrostrictive material
    • H03H9/542—Filters comprising resonators of piezo-electric or electrostrictive material including passive elements

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
FR903247D 1943-04-12 1944-04-07 High frequency electrical oscillations generator circuit Expired FR903247A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH587399X 1943-04-12

Publications (1)

Publication Number Publication Date
FR903247A true FR903247A (en) 1945-09-27

Family

ID=4521893

Family Applications (1)

Application Number Title Priority Date Filing Date
FR903247D Expired FR903247A (en) 1943-04-12 1944-04-07 High frequency electrical oscillations generator circuit

Country Status (3)

Country Link
US (1) US2444998A (en)
FR (1) FR903247A (en)
GB (1) GB587399A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2471085A (en) * 1947-06-28 1949-05-24 Sinclair Refining Co Fluid catalyst process for the conversion of hydrocarbons
US2702427A (en) * 1948-03-13 1955-02-22 Roberts Shepard Method of making electromechanically sensitive material
US2878454A (en) * 1953-09-03 1959-03-17 Motorola Inc Piezoelectric crystal filter
US2939089A (en) * 1958-01-06 1960-05-31 Philco Corp Signal generating circuit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1996504A (en) * 1933-04-12 1935-04-02 Bell Telephone Labor Inc Wave filter
US1994220A (en) * 1934-01-03 1935-03-12 Hormel August Metal sheet drying oven
US2306555A (en) * 1940-05-23 1942-12-29 Research Corp Method for frequency control

Also Published As

Publication number Publication date
US2444998A (en) 1948-07-13
GB587399A (en) 1947-04-24

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