FR707865A - Device for keeping the frequency of piezoelectric crystals constant - Google Patents

Device for keeping the frequency of piezoelectric crystals constant

Info

Publication number
FR707865A
FR707865A FR707865DA FR707865A FR 707865 A FR707865 A FR 707865A FR 707865D A FR707865D A FR 707865DA FR 707865 A FR707865 A FR 707865A
Authority
FR
France
Prior art keywords
keeping
frequency
piezoelectric crystals
constant
crystals constant
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.)
Alcatel Lucent Deutschland AG
C Lorenz AG
Original Assignee
Standard Elektrik Lorenz AG
C Lorenz 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
Priority claimed from DEL77050D external-priority patent/DE516554C/en
Application filed by Standard Elektrik Lorenz AG, C Lorenz AG filed Critical Standard Elektrik Lorenz AG
Application granted granted Critical
Publication of FR707865A publication Critical patent/FR707865A/en
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
    • H03B5/30—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
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/04—Constructional details for maintaining temperature constant
FR707865D 1929-12-18 1930-12-16 Device for keeping the frequency of piezoelectric crystals constant Expired FR707865A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL77050D DE516554C (en) 1929-12-18 1929-12-18 Device for keeping the frequency constant of tube transmitters controlled by piezo crystals

Publications (1)

Publication Number Publication Date
FR707865A true FR707865A (en) 1931-07-16

Family

ID=7284103

Family Applications (1)

Application Number Title Priority Date Filing Date
FR707865D Expired FR707865A (en) 1929-12-18 1930-12-16 Device for keeping the frequency of piezoelectric crystals constant

Country Status (4)

Country Link
US (1) US1882989A (en)
AT (1) AT125430B (en)
FR (1) FR707865A (en)
GB (1) GB356042A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2731564A (en) * 1951-11-05 1956-01-17 Edelstein Harold Barium titanate temperature control
US2970226A (en) * 1956-11-20 1961-01-31 Texas Instruments Inc Electronic timing device
US3013104A (en) * 1957-07-18 1961-12-12 Video Instr Company Inc Heat bank for transistorized circuits
US3007023A (en) * 1958-03-05 1961-10-31 Amphenol Borg Electronics Corp Temperature control device for a frequency standard generator
GB2170930B (en) * 1985-02-07 1988-10-05 Sherritt Gordon Mines Ltd Quadrupole mass spectrometers
DE102005024657C5 (en) * 2004-11-19 2016-04-21 Webasto Ag Roller blind arrangement for a vehicle

Also Published As

Publication number Publication date
US1882989A (en) 1932-10-18
AT125430B (en) 1931-11-10
GB356042A (en) 1931-09-03

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