GB1099762A - Improvements in digital divide-by-two-circuits - Google Patents

Improvements in digital divide-by-two-circuits

Info

Publication number
GB1099762A
GB1099762A GB4714766A GB4714766A GB1099762A GB 1099762 A GB1099762 A GB 1099762A GB 4714766 A GB4714766 A GB 4714766A GB 4714766 A GB4714766 A GB 4714766A GB 1099762 A GB1099762 A GB 1099762A
Authority
GB
United Kingdom
Prior art keywords
pulse
biased
resistance condition
state
low resistance
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
GB4714766A
Inventor
Edward Albert Feuell
Frank Fellows
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.)
STC PLC
Original Assignee
Standard Telephone and Cables 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.)
Filing date
Publication date
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB4714766A priority Critical patent/GB1099762A/en
Publication of GB1099762A publication Critical patent/GB1099762A/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
    • H03K3/313—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of semiconductor devices with two electrodes, one or two potential barriers, and exhibiting a negative resistance characteristic
    • H03K3/315—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of semiconductor devices with two electrodes, one or two potential barriers, and exhibiting a negative resistance characteristic the devices being tunnel diodes

Landscapes

  • Networks Using Active Elements (AREA)

Abstract

1,099,762. Semi-conductor pulse dividing circuits. STANDARD TELEPHONES & CABLES Ltd. Oct. 21, 1966, No. 47147/66. Heading H3T. A digital divide by two circuit includes a resistance memory device RM1 which has a voltage-current characteristic as shown in Fig. 4. In Fig. 3 the device RM1 is biased in the low resistance condition at Q and a first negative input pulse P1 from a generator G changes the state of the device into the high resistance condition which it maintains when this pulse ends and is then biased at V B . The next negative input pulse P2 changes the state of the device to a low resistance condition biased at Q so that for every two input pulses one output pulse of voltage V B is produced which may be filtered to produce a further output (Fig. 5C, not shown). In an alternative arrangement (Fig. 6, not shown), the output is taken across an additional resistor connected between the device and the earth connection. The device RM1 consists of a thin metalinsulator-metal sandwich which holds its high or low resistance condition to which it has been set for a delay or relaxation time, during which time input pulses applied to the device have no effect on its state. The D.C. source V s may be applied intermittently so as to save on power supplied to the circuit.
GB4714766A 1966-10-21 1966-10-21 Improvements in digital divide-by-two-circuits Expired GB1099762A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4714766A GB1099762A (en) 1966-10-21 1966-10-21 Improvements in digital divide-by-two-circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4714766A GB1099762A (en) 1966-10-21 1966-10-21 Improvements in digital divide-by-two-circuits

Publications (1)

Publication Number Publication Date
GB1099762A true GB1099762A (en) 1968-01-17

Family

ID=10443903

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4714766A Expired GB1099762A (en) 1966-10-21 1966-10-21 Improvements in digital divide-by-two-circuits

Country Status (1)

Country Link
GB (1) GB1099762A (en)

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