GB1366858A - Oscillators - Google Patents

Oscillators

Info

Publication number
GB1366858A
GB1366858A GB4369970A GB4369970A GB1366858A GB 1366858 A GB1366858 A GB 1366858A GB 4369970 A GB4369970 A GB 4369970A GB 4369970 A GB4369970 A GB 4369970A GB 1366858 A GB1366858 A GB 1366858A
Authority
GB
United Kingdom
Prior art keywords
gate
oscillator
output
input
terminals
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
GB4369970A
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.)
Plessey Co Ltd
Original Assignee
Plessey Co 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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB4369970A priority Critical patent/GB1366858A/en
Publication of GB1366858A publication Critical patent/GB1366858A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/027—Generators characterised by the type of circuit or by the means used for producing pulses by the use of logic circuits, with internal or external positive feedback
    • H03K3/03—Astable circuits
    • H03K3/0307—Stabilisation of output, e.g. using crystal
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

1366858 Oscillator circuits PLESSEY CO Ltd 23 Aug 1971 [12 Sept 1970] 43699/70 Heading H3T An oscillator comprises a logic gate 1 having at least two input terminals and including a multi-emitter transistor (Fig. 2, not shown) and a phase-shifting network 5-9 connected between an input terminal 3 and an output terminal 4 of the gate. The logic gate may be an AND, NAND, NOR or an OR gate and the network 5-9 is arranged for oscillations at the crystal resonant frequency. A control signal may be applied to a further input terminal 2 for switching the oscillator on or off. The inductance 6 provides a low resistance D.C. path between terminals 3, 4 so that feed-back gain is available in the intermediate condition between the two switched output states of gate 1. In Fig. 3 (not shown) a signal generator includes a number of oscillators 1,2...N which may be selectively switched by a channel selection switch and an output of the required frequency range is obtained via an N-input NAND gate 13.
GB4369970A 1971-08-23 1971-08-23 Oscillators Expired GB1366858A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4369970A GB1366858A (en) 1971-08-23 1971-08-23 Oscillators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4369970A GB1366858A (en) 1971-08-23 1971-08-23 Oscillators

Publications (1)

Publication Number Publication Date
GB1366858A true GB1366858A (en) 1974-09-11

Family

ID=10429924

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4369970A Expired GB1366858A (en) 1971-08-23 1971-08-23 Oscillators

Country Status (1)

Country Link
GB (1) GB1366858A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0298846A1 (en) * 1987-07-07 1989-01-11 Thomson-Csf Oscillator comprising a piezo-electric resonator
EP0381270A2 (en) * 1989-01-31 1990-08-08 Philips Electronics North America Corporation A gated high stability LC stabilized oscillator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0298846A1 (en) * 1987-07-07 1989-01-11 Thomson-Csf Oscillator comprising a piezo-electric resonator
FR2618031A1 (en) * 1987-07-07 1989-01-13 Thomson Csf OSCILLATOR WITH PIEZOELECTRIC RESONATOR
US4906948A (en) * 1987-07-07 1990-03-06 Thomson-Csf Oscillator with piezoelectric resonator
EP0381270A2 (en) * 1989-01-31 1990-08-08 Philips Electronics North America Corporation A gated high stability LC stabilized oscillator
EP0381270A3 (en) * 1989-01-31 1991-09-25 Philips Electronics North America Corporation A gated high stability lc stabilized oscillator

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees