GB1205754A – Electrical oscillation generators
– Google Patents
GB1205754A – Electrical oscillation generators
– Google Patents
Electrical oscillation generators
Info
Publication number
GB1205754A
GB1205754A
GB2356270A
GB2356270A
GB1205754A
GB 1205754 A
GB1205754 A
GB 1205754A
GB 2356270 A
GB2356270 A
GB 2356270A
GB 2356270 A
GB2356270 A
GB 2356270A
GB 1205754 A
GB1205754 A
GB 1205754A
Authority
GB
United Kingdom
Prior art keywords
oscillator
circuit
output
frequency
oscillations
Prior art date
1966-09-09
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
GB2356270A
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.)
Smiths Group PLC
Original Assignee
Smiths Group PLC
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.)
1966-09-09
Filing date
1966-09-09
Publication date
1970-09-16
1966-09-09
Application filed by Smiths Group PLC
filed
Critical
Smiths Group PLC
1966-09-09
Priority to GB2356270A
priority
Critical
patent/GB1205754A/en
1970-09-16
Publication of GB1205754A
publication
Critical
patent/GB1205754A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
230000010355
oscillation
Effects
0.000
title
abstract
6
230000001419
dependent effect
Effects
0.000
abstract
1
230000001960
triggered effect
Effects
0.000
abstract
1
Classifications
G—PHYSICS
G04—HOROLOGY
G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
G04C11/00—Synchronisation of independently-driven clocks
G04C11/08—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction
G04C11/081—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction using an electro-magnet
G04C11/084—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction using an electro-magnet acting on the balance
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
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
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
H03B5/362—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 the amplifier being a single transistor
Abstract
1,205,754. Automatic control systems for oscillation generators. SMITHS INDUSTRIES Ltd. 1 Sept., 1967 [9 Sept., 1966], No. 23562/70. Heading H3A. A circuit for generating electrical oscillations comprises two oscillators of different frequencies and means to derive a pulse of width less than that of the period of the oscillator of higher frequency from each or selected oscillations of the other oscillator, the higher frequency oscillations and the pulses being fed to inputs of an AND gate so that the output of the AND gate is a function of the relative phase of the higher and lower frequency oscillations, said output acting to alter the frequency of the lower frequency oscillator to maintain the relative phase constant. In the illustrated circuit, for use in an electronic clock, pulses are generated by a monostable circuit 10, comprising transistors 27, 28, 29 and receiving the output from the lower frequency oscillator 3 and pass via a differentiating circuit 11 and amplifier 12 to the base of a transistor 35. The latter is in series, in an AND gate 13, with a transistor 34 to the base of which is applied the output of the higher frequency oscillator 1. The output pulses of the circuit 13 are of a width dependent upon the phase difference between the signals from the oscillators 1, 3 and are passed via an integrator 14 to the monostable circuit 10 which is triggered when the magnitude of the signal from the oscillator 3 exceeds that from the integrator 14. The output of the circuit 10 also passes to the oscillator 3 to vary its frequency.
GB2356270A
1966-09-09
1966-09-09
Electrical oscillation generators
Expired
GB1205754A
(en)
Priority Applications (1)
Application Number
Priority Date
Filing Date
Title
GB2356270A
GB1205754A
(en)
1966-09-09
1966-09-09
Electrical oscillation generators
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB2356270A
GB1205754A
(en)
1966-09-09
1966-09-09
Electrical oscillation generators
Publications (1)
Publication Number
Publication Date
GB1205754A
true
GB1205754A
(en)
1970-09-16
Family
ID=10197687
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB2356270A
Expired
GB1205754A
(en)
1966-09-09
1966-09-09
Electrical oscillation generators
Country Status (1)
Country
Link
GB
(1)
GB1205754A
(en)
1966
1966-09-09
GB
GB2356270A
patent/GB1205754A/en
not_active
Expired
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Legal Events
Date
Code
Title
Description
1971-01-27
PS
Patent sealed
1974-03-27
PLNP
Patent lapsed through nonpayment of renewal fees
