GB1132515A - Transistorised oscillators - Google Patents

Transistorised oscillators

Info

Publication number
GB1132515A
GB1132515A GB4131/66A GB413166A GB1132515A GB 1132515 A GB1132515 A GB 1132515A GB 4131/66 A GB4131/66 A GB 4131/66A GB 413166 A GB413166 A GB 413166A GB 1132515 A GB1132515 A GB 1132515A
Authority
GB
United Kingdom
Prior art keywords
transistor
crystal
collector
capacitor
emitter
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
GB4131/66A
Inventor
Hugh Henry Anthony Bath
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.)
Edwards High Vacuum International Ltd
Original Assignee
Edwards High Vacuum International Ltd
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 Edwards High Vacuum International Ltd filed Critical Edwards High Vacuum International Ltd
Priority to GB4131/66A priority Critical patent/GB1132515A/en
Priority to DE19671591111D priority patent/DE1591111B1/en
Priority to FR93218A priority patent/FR1509748A/en
Publication of GB1132515A publication Critical patent/GB1132515A/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
    • H03B5/36—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 semiconductor device
    • 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
    • H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
    • H03B2200/0002—Types of oscillators
    • H03B2200/0008—Colpitts oscillator
    • 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
    • H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
    • H03B2200/0014—Structural aspects of oscillators
    • H03B2200/0018—Structural aspects of oscillators relating to the cutting angle of a crystal, e.g. AT cut quartz

Abstract

1,132,515. Monitoring thin films electrically. EDWARDS HIGH VACUUM INTERNATIONAL Ltd. Jan.27, 1967 [Jan.31, 1966], No.4131/66. Heading G1N. LAlso in Division H3] In a crystal oscillator comprising transistor T1, the emitter of which is connected to the common point of a pair of capacitors C1, 2 connected in series across the Piezo-electric crystal 1, the D. C. path for the emitter current of transistor T1 comprises the collector-emitter path of a further transistor T2. Transistor T1 is provided with collector circuit resistor R a capacitor C3 coupling its collector to the base of transistor T2 assists in ensuring oscillation with crystals having a wide range of activities. The arrangement is more particularly intended for monitoring the deposition of thin films under vacuum, and to protect the components from harmful effects which arise when the crystal is subject to space charges or plasmas inductance L and capacitor C5 are placed in parallel with the crystal, and a blocking capacitor C4 in the lead to the base of transistor T1.
GB4131/66A 1966-01-31 1966-01-31 Transistorised oscillators Expired GB1132515A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB4131/66A GB1132515A (en) 1966-01-31 1966-01-31 Transistorised oscillators
DE19671591111D DE1591111B1 (en) 1966-01-31 1967-01-28 Transistorized oscillator
FR93218A FR1509748A (en) 1966-01-31 1967-01-31 Transistor oscillator and apparatus provided with said oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4131/66A GB1132515A (en) 1966-01-31 1966-01-31 Transistorised oscillators

Publications (1)

Publication Number Publication Date
GB1132515A true GB1132515A (en) 1968-11-06

Family

ID=9771337

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4131/66A Expired GB1132515A (en) 1966-01-31 1966-01-31 Transistorised oscillators

Country Status (3)

Country Link
DE (1) DE1591111B1 (en)
FR (1) FR1509748A (en)
GB (1) GB1132515A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1766840B1 (en) * 1968-07-26 1971-12-02 Siemens Ag Amplitude-controlled generator
CH504039A (en) * 1968-10-23 1970-11-13 Suisse Horlogerie Quartz oscillator circuit, parallel resonance, for time measuring device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930990A (en) * 1957-10-25 1960-03-29 William N Coffey Stabilized oscillator
US3090926A (en) * 1960-07-15 1963-05-21 Siemens Ag Transistor amplifier with tunnel diode in emitter circuit
FR1381030A (en) * 1964-01-28 1964-12-04 Rank Precision Ind Ltd Oscillator

Also Published As

Publication number Publication date
FR1509748A (en) 1968-01-12
DE1591111B1 (en) 1971-02-11

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