GB887586A - Improvements in or relating to frequency divider circuit arrangements - Google Patents

Improvements in or relating to frequency divider circuit arrangements

Info

Publication number
GB887586A
GB887586A GB22319/58A GB2231958A GB887586A GB 887586 A GB887586 A GB 887586A GB 22319/58 A GB22319/58 A GB 22319/58A GB 2231958 A GB2231958 A GB 2231958A GB 887586 A GB887586 A GB 887586A
Authority
GB
United Kingdom
Prior art keywords
core
windings
winding
pulses
series
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
GB22319/58A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries 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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB887586A publication Critical patent/GB887586A/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
    • H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
    • H03B19/03—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source using non-linear inductance
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
    • H03K23/76—Pulse counters comprising counting chains; Frequency dividers comprising counting chains using magnetic cores or ferro-electric capacitors
    • 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
    • H03K3/45—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of non-linear magnetic or dielectric devices

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

887,586. Circuits employing bi-stable magnetic elements. PHILIPS ELECTRICAL INDUSTRIES Ltd. July 11, 1958 [July 12, 1957], No. 22319/58. Class 40 (9). [Also in Group XIX] A pulse frequency dividing circuit comprises a pair of cores A, B, Fig. 1, each having two windings WA1, WA2 and WB1, WB2, the turns of which are dissimilar, the windings WA1, WB1 being connected in series in the same magnetizing sense to a source of negative pulses NG, while the windings WA2, WB2 are connected in series in opposite magnetizing senses to a source of positive pulses PG, a third winding WA3 acting in the same sense as winding WA1 on core A being also connected to the positive pulse source. The pulses PG, NG may be derived from a common input and are applied alternately, the winding with the larger number of turns in the relevant series path taking priority in reversing the magnetic state of the associated core, if the state is such as to be reversible. A reversal of state of a core limits the current in the series path so that the magnetic state of the other core is unaffected. Assuming that the cores are both initially in state " 0," then a sequence of core reversals takes place as shown in Fig. 3, the winding WA3 being operative during the first positive pulse to switch core A to state " 1 " and during the second positive pulse to inhibit switching of core A by current in winding WA2. A single output pulse for a total of two positive and two negative input pulses may be derived from windings (not shown) on each core. Alternatively, outputs may be taken from a terminal UA, UB or UK. In a modification, Fig. 4, an additional core C with windings WC1, WC2 respectively connected in the two series paths is provided. In this arrangement a resistor R3 is provided across which a switching voltage is developed at the stage when the impedance of winding WC2 is low to a positive pulse. The two pulses in this case are provided by an alternating supply over respective rectifiers G1 and G2. The pattern of core switching as the application of pulses proceeds is shown in Fig. 5. Output windings (not shown) may be provided on cores B and C or outputs may be derived from resistors in series with windings WA1 or WA2.
GB22319/58A 1957-07-12 1958-07-11 Improvements in or relating to frequency divider circuit arrangements Expired GB887586A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL887586X 1957-07-12

Publications (1)

Publication Number Publication Date
GB887586A true GB887586A (en) 1962-01-17

Family

ID=19853816

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22319/58A Expired GB887586A (en) 1957-07-12 1958-07-11 Improvements in or relating to frequency divider circuit arrangements

Country Status (1)

Country Link
GB (1) GB887586A (en)

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