GB611722A - Improvements in or relating to multivibrator circuits - Google Patents

Improvements in or relating to multivibrator circuits

Info

Publication number
GB611722A
GB611722A GB21396/45A GB2139645A GB611722A GB 611722 A GB611722 A GB 611722A GB 21396/45 A GB21396/45 A GB 21396/45A GB 2139645 A GB2139645 A GB 2139645A GB 611722 A GB611722 A GB 611722A
Authority
GB
United Kingdom
Prior art keywords
circuit
valve
cathode
aug
stated
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
GB21396/45A
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.)
Farnsworth Television and Radio Corp
Original Assignee
Farnsworth Television and Radio Corp
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 Farnsworth Television and Radio Corp filed Critical Farnsworth Television and Radio Corp
Publication of GB611722A publication Critical patent/GB611722A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

611,722. Pulse generating circuits. FARNSWORTH TELEVISION & RADIO CORPORATION. Aug. 21, 1945, No. 21396. Convention date, Aug. 26, 1944. [Class 40 (vi)] A capacity coupled multivibrator circuit has one grid leak resistor omitted, so that the time constant of one of the external grid circuits is infinite. In the circuit shown in Fig. 1, it is stated that the circuit normally remains in a stable state with valve 1 conducting, and valve 2 cut off. Negative trigger pulses are applied to this flip-flop circuit via condenser 23, the output pulses being taken from across cathode impedance 15. In a modification (Fig. 2, not shown), a variable resistance is included in the cathode circuit of valve 1, and it is stated that this circuit is self-running, and that the frequency may be controlled by varying this cathode resistance. In this case, synchronizing pulses may be applied via condenser 23. Suitable values for the components of the circuit are given in the Specification.
GB21396/45A 1944-08-26 1945-08-21 Improvements in or relating to multivibrator circuits Expired GB611722A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US611722XA 1944-08-26 1944-08-26

Publications (1)

Publication Number Publication Date
GB611722A true GB611722A (en) 1948-11-03

Family

ID=22034108

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21396/45A Expired GB611722A (en) 1944-08-26 1945-08-21 Improvements in or relating to multivibrator circuits

Country Status (1)

Country Link
GB (1) GB611722A (en)

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