GB602267A - Electronic trigger circuit - Google Patents

Electronic trigger circuit

Info

Publication number
GB602267A
GB602267A GB19114/45A GB1911445A GB602267A GB 602267 A GB602267 A GB 602267A GB 19114/45 A GB19114/45 A GB 19114/45A GB 1911445 A GB1911445 A GB 1911445A GB 602267 A GB602267 A GB 602267A
Authority
GB
United Kingdom
Prior art keywords
valve
conducting
circuit
duration
condenser
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
GB19114/45A
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.)
Marconis Wireless Telegraph Co Ltd
Original Assignee
Marconis Wireless Telegraph Co 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 Marconis Wireless Telegraph Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB602267A publication Critical patent/GB602267A/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
    • H03K3/04—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of vacuum tubes only, with positive feedback
    • H03K3/05—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of vacuum tubes only, with positive feedback using means other than a transformer for feedback
    • H03K3/06—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of vacuum tubes only, with positive feedback using means other than a transformer for feedback using at least two tubes so coupled that the input of one is derived from the output of another, e.g. multivibrator
    • H03K3/10—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of vacuum tubes only, with positive feedback using means other than a transformer for feedback using at least two tubes so coupled that the input of one is derived from the output of another, e.g. multivibrator monostable

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electronic Switches (AREA)

Abstract

602,267. Valve generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. July 25, 1945, No. 19114. Convention date, June 30, 1943. [Class 40 (vi)] An electronic trigger circuit comprising two valves has one stable and one unstable state of operation and means for applying pulses to the cathode of one of the valves. Fig. 2 shows a multivibrator circuit, valve V1 being non- conducting and valve V2 conducting, in the stable state. A resistance RK1, which may be of high value, is shunted by a rectifier such as diode DI, and connected between the cathode of valve V1 and earth. Valve V1 may be rendered conducting by the application of a negative pulse to the cathode of valve V1 through condenser C, sufficient to overcome the negative grid bias, and normal multivibrator action follows whereby valve V2 is cut-off. The unstable state with valve V1 conducting and valve V2 non-conducting, continues until after a period determined by the time constant of the condenser CH2 and resistor RD2. When valve V1 starts to conduct, a positive voltage is developed across resistor RK1 and diode D1 then starts to conduct, which has the effect of considerably reducing the time constant of the circuit elements associated with condenser C. Thus the duration of the unstable condition of the circuit depends only on the circuit elements CH2, RD2, and may be made independent of the duration or shape of the input pulse, provided only that the duration of the input pulse is shorter than that of the desired output pulse. By this means, rectangular pulses of short duration, of the order of five microseconds, may be produced. The valves V1 and V2 may be in one envelope. The invention may also be used to provide a high impedance tripping or synchronising input circuit by arranging for the resistance shunting diode D1 to be of high value.
GB19114/45A 1943-06-30 1945-07-25 Electronic trigger circuit Expired GB602267A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US602267XA 1943-06-30 1943-06-30

Publications (1)

Publication Number Publication Date
GB602267A true GB602267A (en) 1948-05-24

Family

ID=22028150

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19114/45A Expired GB602267A (en) 1943-06-30 1945-07-25 Electronic trigger circuit

Country Status (1)

Country Link
GB (1) GB602267A (en)

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