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GB957348A - Improvements in or relating to discriminator circuits - Google Patents

Improvements in or relating to discriminator circuits

Info

Publication number
GB957348A
GB957348A GB3856661A GB3856661A GB957348A GB 957348 A GB957348 A GB 957348A GB 3856661 A GB3856661 A GB 3856661A GB 3856661 A GB3856661 A GB 3856661A GB 957348 A GB957348 A GB 957348A
Authority
GB
United Kingdom
Prior art keywords
diode
indicator
oct
relating
tunnel
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
GB3856661A
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
Priority claimed from DEST17063A external-priority patent/DE1130063B/en
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority claimed from DE1961ST018485 external-priority patent/DE1281547B/en
Publication of GB957348A publication Critical patent/GB957348A/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

  • Measurement Of Current Or Voltage (AREA)
  • Locating Faults (AREA)
  • Monitoring And Testing Of Exchanges (AREA)

Abstract

957,348. Semi-conductor bi-stable and multistable state circuits. STANDARD TELEPHONES & CABLES Ltd. Oct. 27, 1961 [Oct. 29, 1960], No. 38566/61. Heading H3T. A monitoring circuit comprises a tunnel diode TD which switches to its high voltage state when an input signal exceeds a predetermined value. The change in voltage across the diode is arranged to operate an indicator either directly or via a switching transistor TRS. In a second embodiment, Fig. 3 (not shown), a number of tunnel diodes are connected in series to a single indicator capable of indicating a plurality of levels. In a modification of Fig. 3 and Fig. 4 (not shown) each diode is associated with a separate transistor switch which is connected to an individual indicator, e.g. a relay.
GB3856661A 1960-10-29 1961-10-27 Improvements in or relating to discriminator circuits Expired GB957348A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEST17063A DE1130063B (en) 1960-10-29 1960-10-29 Maximum value indicator for current and voltage values
DE1961ST018485 DE1281547B (en) 1961-10-28 1961-10-28 Maximum value indicator for current and voltage values

Publications (1)

Publication Number Publication Date
GB957348A true GB957348A (en) 1964-05-06

Family

ID=25993991

Family Applications (2)

Application Number Title Priority Date Filing Date
GB3856661A Expired GB957348A (en) 1960-10-29 1961-10-27 Improvements in or relating to discriminator circuits
GB4061162A Expired GB958737A (en) 1960-10-29 1962-10-26 Maximum current and voltage value indicator

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB4061162A Expired GB958737A (en) 1960-10-29 1962-10-26 Maximum current and voltage value indicator

Country Status (1)

Country Link
GB (2) GB957348A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3334306A (en) * 1964-09-28 1967-08-01 Hartley J Jensen Voltage transient sampling circuit
US3443239A (en) * 1966-06-30 1969-05-06 Collins Radio Co Am amplifier circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3334306A (en) * 1964-09-28 1967-08-01 Hartley J Jensen Voltage transient sampling circuit
US3443239A (en) * 1966-06-30 1969-05-06 Collins Radio Co Am amplifier circuit

Also Published As

Publication number Publication date
GB958737A (en) 1964-05-27

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