GB731151A - Improvements in and relating to electron discharge valve circuits for generating voltage variations of saw-tooth and rectangular waveform - Google Patents

Improvements in and relating to electron discharge valve circuits for generating voltage variations of saw-tooth and rectangular waveform

Info

Publication number
GB731151A
GB731151A GB14369/50A GB1436950A GB731151A GB 731151 A GB731151 A GB 731151A GB 14369/50 A GB14369/50 A GB 14369/50A GB 1436950 A GB1436950 A GB 1436950A GB 731151 A GB731151 A GB 731151A
Authority
GB
United Kingdom
Prior art keywords
valve
pulse
anode
miller
voltage
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
GB14369/50A
Inventor
Derek Alfred Levell
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.)
AC Cossor Ltd
Original Assignee
AC Cossor 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 AC Cossor Ltd filed Critical AC Cossor Ltd
Priority to GB14369/50A priority Critical patent/GB731151A/en
Priority to US229070A priority patent/US2662178A/en
Publication of GB731151A publication Critical patent/GB731151A/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
    • 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
    • H03K3/08—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 astable
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
    • H03K4/12—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth voltage is produced across a capacitor
    • H03K4/20—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth voltage is produced across a capacitor using a tube with negative feedback by capacitor, e.g. Miller integrator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
    • H03K4/12—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth voltage is produced across a capacitor
    • H03K4/20—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth voltage is produced across a capacitor using a tube with negative feedback by capacitor, e.g. Miller integrator
    • H03K4/22—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth voltage is produced across a capacitor using a tube with negative feedback by capacitor, e.g. Miller integrator combined with transitron, e.g. phantastron, sanatron

Abstract

731,151. Saw-tooth and pulse generating circuits. COSSOR, Ltd., A. C. May 24, 1951 [June 8, 1950], No. 14369/50. Class 40 (6,). In a saw-tooth or pulse generator of the Miller integrator type a triggering pulse is applied to a control circuit comprising two further valves which have a common cathode impedance, the anode of the second valve being coupled to an electrode of the Miller valve and the control electrode of the third valve being coupled to a control electrode of the Miller valve. In this way the circuit functions with a triggering pulse of small amplitude. Fig. 1 shows a saw-tooth or pulse generator comprising a Miller valve 10 and' cathode-coupled control valves 19 and 20. The control grid of the Miller valve is returned to a positive voltage source at 14 via resistors 12 and 13. In its quiescent state the suppressor grid of the Miller valve is biased negatively so that screen current only flows and anode current flow in valve 20 biases valve 19 to cut-off by reason of the cathode resistors 21, 22. A positive-going triggering pulse applied at 32 is differentiated by network 33, 35 and the resulting negative pulse cuts-off valve 20 so that its anode potential rises and consequently the suppressor grid voltage of the Miller valve 10. Some of the screen grid current in valve 10 is diverted to the anode, the screen voltage rises and thus that of the control grid of valve 19. The resulting cathode current flow in valve 19 biases off valve 20, the action being cumulative so that valve 20 is cut-off and a large positive pulse is applied to the suppressor grid of valve 10. The anode voltage of valve 10 commences to fall and thus " runs-down " linearly in the normal Miller integrator manner until the valve " bottoms " when the screen current increases. This causes the conductivity of valve 19 to be reduced and of valve 20 to be increased until by cumulative action valve 20 is rendered conducting when the anode potential of valve 10 rises to that of terminal 18 at a rate dependent upon the time constant of network 16, 17. The potential at the junction of resistors 21, 22 is such that the suppressor grid voltage of valve 10 is maintained positive during the anode voltage " run-down." A linear saw-tooth voltage is thus produced at the anode of valve 10 and a positive-going pulse is produced at terminal 31, of which the leading edge is coincident with the sharp negative pulse produced by differentiation of the triggering pulse and the trailing edge coincident with the negative pulse appearing at the suppressor grid of valve 10 at the end of the anode " run-down." A pulse of identical waveform to this but in anti-phase is produced at terminal 30. The generator may be made free-running by returning resistor 25 to a positive source and arranging network 24, 25 to have a suitable time constant. In a modification, Fig.: 2 (not shown), a D.C. coupling is provided between the anode of valve 20 and the .suppressor grid of valve 10. In a further modification shown in Fig. 3, the time constant of discharge of ,capacitor 24 is made long compared with " run-down " period of the Miller valve and diodes 39, 40 act as D.C. restorers.
GB14369/50A 1950-06-08 1950-06-08 Improvements in and relating to electron discharge valve circuits for generating voltage variations of saw-tooth and rectangular waveform Expired GB731151A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB14369/50A GB731151A (en) 1950-06-08 1950-06-08 Improvements in and relating to electron discharge valve circuits for generating voltage variations of saw-tooth and rectangular waveform
US229070A US2662178A (en) 1950-06-08 1951-05-31 Voltage generating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB14369/50A GB731151A (en) 1950-06-08 1950-06-08 Improvements in and relating to electron discharge valve circuits for generating voltage variations of saw-tooth and rectangular waveform

Publications (1)

Publication Number Publication Date
GB731151A true GB731151A (en) 1955-06-01

Family

ID=10039970

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14369/50A Expired GB731151A (en) 1950-06-08 1950-06-08 Improvements in and relating to electron discharge valve circuits for generating voltage variations of saw-tooth and rectangular waveform

Country Status (2)

Country Link
US (1) US2662178A (en)
GB (1) GB731151A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2731567A (en) * 1952-10-31 1956-01-17 Rca Corp Transistor relaxation oscillator
US2867721A (en) * 1953-03-27 1959-01-06 Delos B Churchill Regenerative phantastron time delay circuit
GB745015A (en) * 1953-08-25 1956-02-15 Mullard Radio Valve Co Ltd Improvements in or relating to circuit arrangements
NL87533C (en) * 1954-12-08
US2890333A (en) * 1955-08-19 1959-06-09 Bell Telephone Labor Inc Delay network
US2898554A (en) * 1955-12-22 1959-08-04 Victor Adding Machine Co Deviation oscillator
US2835815A (en) * 1956-07-23 1958-05-20 Cones Van Buren Self-triggered sawtooth wave generator
US3031628A (en) * 1958-03-26 1962-04-24 Texas Instruments Inc Transistor oscillator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2464393A (en) * 1945-06-12 1949-03-15 Purdue Research Foundation Cathode-ray beam deflecting circuits
US2456089A (en) * 1946-06-26 1948-12-14 Rca Corp Wide band frequency modulator

Also Published As

Publication number Publication date
US2662178A (en) 1953-12-08

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