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US2168508A - Relaxation oscillation generator - Google Patents

Relaxation oscillation generator Download PDF

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Publication number
US2168508A
US2168508A US102263A US10226336A US2168508A US 2168508 A US2168508 A US 2168508A US 102263 A US102263 A US 102263A US 10226336 A US10226336 A US 10226336A US 2168508 A US2168508 A US 2168508A
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US
United States
Prior art keywords
tube
terminals
cathode
discharge
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 - Lifetime
Application number
US102263A
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English (en)
Inventor
Barthelemy Rene
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.)
Compteurs Schlumberger SA
Original Assignee
Compteurs Schlumberger SA
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 Compteurs Schlumberger SA filed Critical Compteurs Schlumberger SA
Application granted granted Critical
Publication of US2168508A publication Critical patent/US2168508A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/92—Generating pulses having essentially a finite slope or stepped portions having a waveform comprising a portion of a sinusoid
    • 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
    • H03K4/86—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements gas-filled tubes or spark-gaps
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K6/00—Manipulating pulses having a finite slope and not covered by one of the other main groups of this subclass
    • H03K6/02—Amplifying pulses

Definitions

  • the present invention has for its object to 'solvethe same problem by simple means.
  • FIG 1 shows an embodiment of the invention, the function of which is explainedin Figure 2.
  • ' - Figure 4 relates to a variation in the method of controlling the relaxation member.
  • the relaxation element is a gas tube l which may function in the known manner.
  • the discharge therein is initiated if the potential of pthe anode is greater than an upper critical voltage and, once initiated, it only ceases if the potential of the anode falls below a lower critical voltage.
  • the discharge can also be initiated by putting the tube into a conducting condition by the application of a suitable voltage to the grid. It is this latter method which is used.
  • the grid is polarized with respect to the cathode by means of a source 2.
  • the successive discharges are either free or controlled by impulses transmitted, for example, by a transformer 3.
  • the gas-tube l is inserted between the two circuits 4, 4', each comprising a resistance 5, 5' and a 'reactance 6, 6 in series, "shuntedby a condenser 1, 1'.
  • the displacement of the cathode beam is produced by the voltage at the terminals 8 and 9 of the tube l, whilst the feeding of the quadripole is effected from the terminals l8 and H.
  • the terminals 8 and Ill are at the same potential, and the terminals 9 and II are also at the samepotential.
  • the condensers I and l are not charged.
  • the tension between theterminals8 and 9 is at themaximum.
  • the vacuum tube BI is connected to the terminals of the relaxation condenser 61, charged by a continuous current through resistances 65 and 13.
  • a potentiometer 62, H, of high resistance serves to polarisethe grid of the tube 6!; the positive part H1 of this potentiometer is shunted by a gas discharge tube 12 in series with the resistance 16; the operations of T2 are controlled, through the intermediary of the coupling 63, by the synchronizing impulses. Then the condensers 11,, 11 are employed to supply the deflecting plates of the cathode tube.
  • the gas discharge tube 12 plays in this arrangement the part of an on and. off relay, each of its operations resulting in the shunting of H1, by the resistance 16 thereby rendering the grid of the tube 6
  • remains positive can be regulated by the condenser 15 and the resistance 13; the elements 12, 15 and 52 form moreover a relaxation circuit having a relatively long period which assures an operation of the tube 6
  • the invention is so particularly applicable to the known cathode tube scanning systems for television in which the signal synchronising the images consists of the periodic suppression of a line signal. It has moreover the followingadvantages; use of the gas discharge tube at feeble load whereby a long period of service is secured; a very reduced consumption at high-tension which enables a common feeding source with the cathode tube to be employed.
  • Device for the production of relaxation oscillations comprising a discharge tube, at least a cathode, an anode and a control electrode in said discharge tube, means for impressing impulses of voltage to said control electrode, two terminals to be connected to a feeding source, a first circuit comprising a resistance and connected between one of said terminals and the anode of said discharge tube, and a second circuit identical to said first circuit connected between the other terminal and the cathode of said discharge tube, whereby the time variations of the voltage of the said cathode and of the said anode are symmetrical with respect to the mean feeding voltage.
  • Device for the production of relaxation oscillations comprising a discharge tube, at least a cathode, an anode and a control electrode in said discharge tube, means for impressing impulses of voltage to said control electrode, two terminals to be connected to a feeding source, a first circuit connected between one of said terminals and the anode of said discharge tube, a condenser and a resistance in said first circuit, and a second circuit identical to said first circuit connected between the other terminal and the cathode of said discharge tube, whereby the time variations of the voltage of the said cathode and of the said anode, due to the charges and discharges of the condensers in said circuits, are symmetrical with respect to the mean feeding voltage.
  • Device for the production of relaxation oscillations comprising a relaxation element, two first terminals to pick-up the relaxation oscillations and connected to said relaxation element, two second terminals to be connected to a feeding source, a first oscillating circuit connected between one of the first terminals and one of the second terminals, and a second oscillating circuit identical to said first circuit and connected between the two other terminals, whereby the time variations of the voltage of the two first terminals are symmetrical with respect to the mean feeding voltage.
  • Device for the production of relaxation oscillations comprising a discharge tube, at least agcathode an anode and a control electrode in said discharge tube, means for impressing impulses of voltage to said control electrode, two terminals to be connected to a feeding source, a first circuit connected between one of said terminals and the anode of said discharge tube, a resistance and an inductance in series in said first circuit, a condenser connected in parallel with said resistance and inductance in said first circuit, and a second circuit identical to said first circuit connected between the other terminal and the cathode of said discharge tube, whereby the time variations of the voltage of the said cathode and of the said anode, due to the charges and discharges of the condensers in said circuits, are symmetrical with respect to the mean feeding voltage.
  • Device for the production of relaxation oscillations comprising a discharge tube, at least a cathode, an-anode and a control electrode in said discharge tube, means for impressing impulses of voltage to said control electrode, two
  • first circuit connected between the positive one of said. terminals and the anode of said discharge tube, a resistance in said first circuit, a second circuit identical to said first circuit connected between the negative terminal and the said cathode, a first condenser connected between the anode of the discharge tube and the negative terminal, and a second condenser connected between the cathode of the discharge tube and the positive terminal, whereby the time variations of the voltage of the said cathode and of the said anode, due to the charges and discharges of the said condensers, are symmetrical with respect to the mean feeding voltage.
  • Device for the production of relaxation oscillations comprising a discharge tube, at least a cathode, an anode and a control electrode in said discharge tube, a condenser connected between said anode and cathode, two terminals to be connected to a feeding source, a first circuit comprising a first resistance connected between said anode and the positive one of the said terminals, a second circuit identical to said first circuit comprising a second resistance and connected between said cathode and the negative one of the said terminals, a second discharge tube, a coupling member receiving the signals and connected to said second discharge tube whereby a discharge is set up in the said second tube by each signal, means for connecting the second tube to the control electrode and to the cathode of the first tube whereby, when a discharge takes place, the voltage between said control electrode and said cathode is modified, rendering the first tube conductive and provoking the discharge of the said condenser, the time variations of the voltage of the said cathode and of the said anode being
  • Device for the production of relaxation oscillations comprising a discharge tube, at least a cathode, an anode and a control electrode in said discharge tube, a condenser connected between said anode and cathode, two terminals to be connected to a feeding source, a first circuit comprising a first resistance connected between said anode and the positive one of the said terminals, a second circuit identical to said first circuit comprising a second resistance and connected between said cathode and the negative one of the said terminals, a third resistance connected between the two said terminals, a connection between said control electrode and an intermediate top on said third resistance for the polarization of the said control electrode, a second discharge tube, a coupling member receiving the signals and connected to said second discharge tube whereby a discharge is set up in the said second tube by each signal, means for connecting the second tube to said third resistance whereby when a discharge takes place, a part of the third resistance is shunted, whereby the polarization of said control electrode is modified, rendering the first tube, at
  • the second discharge tube is a gas discharge tube having a control electrode, the said coupling member being inserted in the circuit of the said control electrode of the second discharge tube.

Landscapes

  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Elimination Of Static Electricity (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)
US102263A 1936-07-29 1936-09-24 Relaxation oscillation generator Expired - Lifetime US2168508A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR48308T 1936-07-29

Publications (1)

Publication Number Publication Date
US2168508A true US2168508A (en) 1939-08-08

Family

ID=8683665

Family Applications (1)

Application Number Title Priority Date Filing Date
US102263A Expired - Lifetime US2168508A (en) 1936-07-29 1936-09-24 Relaxation oscillation generator

Country Status (5)

Country Link
US (1) US2168508A (sv)
BE (2) BE417359A (sv)
FR (2) FR807554A (sv)
GB (2) GB482725A (sv)
NL (1) NL50848C (sv)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2458366A (en) * 1946-09-11 1949-01-04 Motorola Inc Saw-tooth voltage generator
US2519278A (en) * 1944-11-01 1950-08-15 Bell Telephone Labor Inc Pulse-actuated circuit
US2717336A (en) * 1953-05-08 1955-09-06 Michael Res Company Inc Flasher circuit
US2942548A (en) * 1943-03-17 1960-06-28 Gilbert R Bushong Oscillator-thyratron circuit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2477634A (en) * 1943-07-16 1949-08-02 Donald M Lowe Keyer circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2942548A (en) * 1943-03-17 1960-06-28 Gilbert R Bushong Oscillator-thyratron circuit
US2519278A (en) * 1944-11-01 1950-08-15 Bell Telephone Labor Inc Pulse-actuated circuit
US2458366A (en) * 1946-09-11 1949-01-04 Motorola Inc Saw-tooth voltage generator
US2717336A (en) * 1953-05-08 1955-09-06 Michael Res Company Inc Flasher circuit

Also Published As

Publication number Publication date
BE417359A (sv)
GB482725A (en) 1938-04-04
FR48308E (fr) 1937-12-27
GB482724A (en) 1938-04-04
BE421813A (sv)
FR807554A (fr) 1937-01-15
NL50848C (sv)

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