GB1322310A - Controlled oscillator - Google Patents

Controlled oscillator

Info

Publication number
GB1322310A
GB1322310A GB2327772A GB2327772A GB1322310A GB 1322310 A GB1322310 A GB 1322310A GB 2327772 A GB2327772 A GB 2327772A GB 2327772 A GB2327772 A GB 2327772A GB 1322310 A GB1322310 A GB 1322310A
Authority
GB
United Kingdom
Prior art keywords
resistor
output
phase
reference signal
controlled oscillator
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
GB2327772A
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.)
Blaupunkt Werke GmbH
Original Assignee
Blaupunkt Werke GmbH
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 Blaupunkt Werke GmbH filed Critical Blaupunkt Werke GmbH
Publication of GB1322310A publication Critical patent/GB1322310A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/44—Colour synchronisation
    • H04N9/455—Generation of colour burst signals; Insertion of colour burst signals in colour picture signals or separation of colour burst signals from colour picture signals
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Networks Using Active Elements (AREA)

Abstract

1322310 APC systems BLAUPUNKTWERKE GmbH 17 May 1972 [17 May 1971] 23277/72 Headings H3A and H3T A controlled oscillator, the frequency and phase of whose output is dependent on the phase difference between its output and a reference signal, e.g. the burst signal in colour T.V. transmission, comprises a transistor 1 in the grounded collector arrangement and having a resonant circuit 5 connected in the emitter circuit across which the output signal is derived and a frequency control element 9 connected to the base. The control voltage resulting from phase comparison with the reference signal may be applied to a variable impedance 10 connected in series with the frequency control crystal element 9 of the Pierce type of oscillator 1-9. The element 10 may be a reactance element such as a varactor or a resistor formed by a bipolar or field effect transistor, a voltage or current dependent resistor, a temperature dependent resistor or a photosensitive resistor.
GB2327772A 1971-05-17 1972-05-17 Controlled oscillator Expired GB1322310A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712124334 DE2124334A1 (en) 1971-05-17 1971-05-17 Controlled oscillator

Publications (1)

Publication Number Publication Date
GB1322310A true GB1322310A (en) 1973-07-04

Family

ID=5808076

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2327772A Expired GB1322310A (en) 1971-05-17 1972-05-17 Controlled oscillator

Country Status (5)

Country Link
AT (1) AT313995B (en)
DE (1) DE2124334A1 (en)
GB (1) GB1322310A (en)
IT (1) IT957875B (en)
ZA (1) ZA723272B (en)

Also Published As

Publication number Publication date
AT313995B (en) 1974-03-11
DE2124334A1 (en) 1972-11-30
IT957875B (en) 1973-10-20
ZA723272B (en) 1973-02-28

Similar Documents

Publication Publication Date Title
GB1390975A (en) Automatic engine speed control system
GB938946A (en) Voltage-controlled oscillator
GB1044251A (en) An amplitude comparator device
GB1121439A (en) Electronic tunable oscillator circuit
GB1481630A (en) Variable frequency oscillators
GB1322310A (en) Controlled oscillator
US2924786A (en) Pulse-generating means
ES429135A1 (en) Engine control system
GB1338636A (en) High frequency directional apparatus
GB1108372A (en) Improvements in or relating to oscillator arrangements
GB1127983A (en) Improvements in or relating to electric switching circuits
GB1007074A (en) Frequency control of crystal oscillators
GB1387984A (en) Transistor oscillators
GB1264229A (en)
GB1270564A (en) Controllable electric oscillator
GB1093538A (en) Improvements in or relating to switched frequency oscillators
GB1404886A (en) Phase shifting circuit
GB1292560A (en) Controllable reactance circuit
GB1391458A (en) Circuit arrangements pemitting selective changes in the resonant frequency of an oscillatory circuit
GB1047710A (en) Improvements in variable-frequency oscillators
GB1093164A (en) Improvements in or relating to electric oscillators
US4242644A (en) Pulse modulator for operating a device in the avalanche mode
GB1080339A (en) Frequency modulation system
GB1049754A (en) Transistor controlled oscillator
GB1130672A (en) Electric timepiece

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees