GB727415A - Stepping circuit arrangement using two-terminal electrical trigger devices - Google Patents

Stepping circuit arrangement using two-terminal electrical trigger devices

Info

Publication number
GB727415A
GB727415A GB5371/52A GB537152A GB727415A GB 727415 A GB727415 A GB 727415A GB 5371/52 A GB5371/52 A GB 5371/52A GB 537152 A GB537152 A GB 537152A GB 727415 A GB727415 A GB 727415A
Authority
GB
United Kingdom
Prior art keywords
trigger
potential
shunt circuits
stepping
circuits
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
GB5371/52A
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
Publication of GB727415A publication Critical patent/GB727415A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
    • H03K23/82—Pulse counters comprising counting chains; Frequency dividers comprising counting chains using gas-filled tubes

Landscapes

  • Power Conversion In General (AREA)

Abstract

727,415. Multistable state circuits. STANDARD TELEPHONES & CABLES, Ltd. Feb. 29, 1952 [March 7, 1951], No. 5371/52. Class 40 (6). [Also in Group XIX] A stepping circuit, e.g. a counting chain, comprises identical shunt circuits and each comprising a " two-terminal trigger device " G1, G2 &c. (i.e. an electric device whose voltage/current characteristic, in respect of voltage appearing across and current flowing between two terminals, exhibits a negative resistance region) a rectifier G11, G12 &c. and a resistance A1, A2 &c. in series, and coupling condensers Cl, C2, &c., between consecutive shunt circuits. The potential normally applied across conductors a, b, across which the shunt circuits are connected, is insufficient by itself to trigger a device to the highly conductive condition, but when the potential is temporarily removed or reduced and then restored to normal by means symbolized by switch S an initially triggered device such as G1 is extinguished and the charge in the condenser such as C1 added to the applied potential causes triggering of the next device such as G3, the next operation of S causing a stepping to C3 and so on. The trigger devices may be cold-cathode gas-discharge diodes as shown, thermistors, p-type transistors or dynatrons.
GB5371/52A 1951-03-07 1952-02-29 Stepping circuit arrangement using two-terminal electrical trigger devices Expired GB727415A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE727415X 1951-03-07

Publications (1)

Publication Number Publication Date
GB727415A true GB727415A (en) 1955-03-30

Family

ID=6635453

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5371/52A Expired GB727415A (en) 1951-03-07 1952-02-29 Stepping circuit arrangement using two-terminal electrical trigger devices

Country Status (1)

Country Link
GB (1) GB727415A (en)

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