GB1308715A - Signal frequency generators - Google Patents

Signal frequency generators

Info

Publication number
GB1308715A
GB1308715A GB6035170A GB6035170A GB1308715A GB 1308715 A GB1308715 A GB 1308715A GB 6035170 A GB6035170 A GB 6035170A GB 6035170 A GB6035170 A GB 6035170A GB 1308715 A GB1308715 A GB 1308715A
Authority
GB
United Kingdom
Prior art keywords
signal
line
counter
digital
frequency
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
GB6035170A
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.)
Siemens AG
Original Assignee
Siemens 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
Application filed by Siemens AG filed Critical Siemens AG
Publication of GB1308715A publication Critical patent/GB1308715A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • 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
    • H03B23/00—Generation of oscillations periodically swept over a predetermined frequency range
    • 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
    • H03B2200/006—Functional aspects of oscillators
    • H03B2200/0092—Measures to linearise or reduce distortion of oscillator characteristics

Landscapes

  • Analogue/Digital Conversion (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Measuring Frequencies, Analyzing Spectra (AREA)

Abstract

1308715 Sweep frequency signal generators SIEMENS AG 18 Dec 1970 [22 Dec 1969] 60351/70 Heading H3R A sweep oscillator comprises a frequency synthesizer with sweep generated by a counter controlled from a pulse generator. Digital frequency synthesizer 1 produces an output frequency f a determined by the inputs on digital control lines E 0 -E 6 which are energized by corresponding pulses from outputs A 0 -A 6 of counter 2: a pulse shaper 16 may be interposed so that successive pulses overlap in time. Counter 2, which may comprise a series cascade of bistable trigger stages with feedback to give a digital output, is driven by pulses 3 from pulse generator 4, via gate 5. If the frequency f a is to be effected between upper and lower limits the corresponding start and stop numbers are set on counter 2, starting being effected by a control signal A s on line 10 from programme controller 9. Stopping is effected by means of digital comparator 6 which receives a stop number signal from programme controller 9 which is compared with the outputs A 0 -A 6 and when equality is reached produces a stop signal E s which closes gate 5. For wobbulator action a control device 7 is provided which derives a signal from stop command signal E s to close gate circuit 5 via line 5<SP>1</SP>, also emits a signal A s setting counter 2 back to the predetermined start number, and then produces a delayed signal via line 5<SP>1</SP> to re-open the gate 5. The repetition frequency f z of pulses 3 produced by the pulse generator 4 may be set via a control line 8 from programme controller 9: f z may be varied in accordance with a chosen time function. Control device 7 can also be used to drive display devices or printers: e.g. the start signal can trigger the x-deflection of a printer or oscilloscope via output line 13, the stop signal being emitted via line 14 to terminate the deflection. The sweeping speed may be changed during the progress of a sweep by means of a control signal derived from line 8<SP>1</SP>, this control signal being also applied to the control device 7 to produce on line 15 a corresponding control signal switching over the deflection speeds in a display device or printer. The x-deflection for a display device or printer may alternatively be derived from the outputs A 0 -A 6 or inputs E 0 -E 6 via a digital to analogue converter.
GB6035170A 1969-12-22 1970-12-18 Signal frequency generators Expired GB1308715A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691964249 DE1964249B2 (en) 1969-12-22 1969-12-22 Arrangement for the continuous frequency modulation of a generator

Publications (1)

Publication Number Publication Date
GB1308715A true GB1308715A (en) 1973-03-07

Family

ID=5754665

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6035170A Expired GB1308715A (en) 1969-12-22 1970-12-18 Signal frequency generators

Country Status (2)

Country Link
DE (1) DE1964249B2 (en)
GB (1) GB1308715A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2932057A1 (en) * 1979-08-07 1981-02-26 Tavkoezlesi Kutato Intezet Standardised carrier-wave supply for microwave relay station - has programmable frequency divider and comparator but no mixer (HU 28.7.80)
DE2933221C2 (en) * 1979-08-16 1981-10-15 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for generating an output voltage that changes with respect to the frequency between two corner frequencies, in particular periodically changing
DE3716061C2 (en) * 1987-05-14 1997-01-23 Daimler Benz Aerospace Ag Modulator for generating a frequency-modulated RF signal

Also Published As

Publication number Publication date
DE1964249A1 (en) 1971-06-24
DE1964249B2 (en) 1974-11-14

Similar Documents

Publication Publication Date Title
ES447823A1 (en) Apparatus for synchronizing AC-motors
US3518516A (en) Stepping motor constant velocity drive
GB1308715A (en) Signal frequency generators
GB1188328A (en) Electrical Drives with Motor Energizing Systems
ES400705A1 (en) Method of controlling a pulse inverter for an induction machine
JPS54141134A (en) Control system of mechanical apparatus
GB833454A (en) Process and apparatus for generating series of electrical pulses
GB1110398A (en) Improvements in or relating to sweep frequency signal generators
US4076999A (en) Circuit for limiting the spindle speed of a machine
US2493379A (en) Pulse generating circuit
US3080526A (en) Apparatus for simulating pulse signals generated by a pam/pdm commutator
GB1277647A (en) Method and means for reducing the duration of oscillation of a step motor
US3573592A (en) Single step stepping motor control
SU1515297A1 (en) Device for controlling pulsed voltage converter
GB1010609A (en) Pulse generators
JPS56168573A (en) Generating method of ultrasonic pulse wave
JPS55109183A (en) Motor speed controller
JPS5588593A (en) Controlling apparatus for ac motor
GB931523A (en) A pulse selecting circuit
JPS5588597A (en) Controlling method of acceleration and deceleration of motor
US3425613A (en) System for controlling the starting and stopping of a capstan
SU1469445A1 (en) Generator of sounding radio pulses for ultrasonic check
JPS5743573A (en) Phase controlling equipment of pulse-width modulating inverter
SU445113A1 (en) Device for generating signals with linear frequency modulation
JPS5386422A (en) Pulse generating interval control circuit

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee