GB732776A - Improvements in or relating to electrical circuits using trigger cold-cathode valves - Google Patents

Improvements in or relating to electrical circuits using trigger cold-cathode valves

Info

Publication number
GB732776A
GB732776A GB20214/51A GB2021451A GB732776A GB 732776 A GB732776 A GB 732776A GB 20214/51 A GB20214/51 A GB 20214/51A GB 2021451 A GB2021451 A GB 2021451A GB 732776 A GB732776 A GB 732776A
Authority
GB
United Kingdom
Prior art keywords
voltage
valve
resistor
circuit
current
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
GB20214/51A
Inventor
Frederick Sydney Goulding
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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
Priority to NLAANVRAGE7400353,A priority Critical patent/NL172070B/en
Priority to NL94439D priority patent/NL94439C/xx
Application filed by National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB20214/51A priority patent/GB732776A/en
Priority to US305127A priority patent/US2814772A/en
Publication of GB732776A publication Critical patent/GB732776A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/04—Electrodes; Screens
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/607—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using discharge tubes in parallel with the load as final control devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • 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
    • H03K3/37—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of gas-filled tubes, e.g. astable trigger circuits
    • 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
    • H03K3/53—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback
    • H03K3/55—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback the switching device being a gas-filled tube having a control electrode

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)

Abstract

732,776. Automatic regulation. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Aug. 19, 1952 [Aug. 28, 1951], No. 20214/51. Class 38 (4). [Also in Group XL (c)] A voltage-stabilizing circuit, of the type employing a valve connected across the voltage source and to which a portion of the voltage supplied is tapped off to control the current through the valve in such a manner that an increase in voltage increases the current through the valve, thus increasing the load on the source and reducing the voltage obtained therefrom, comprises a cold-cathode valve connected to operate as an amplifier. Fig. 1 illustrates the basic amplifier circuit wherein the positive voltage to be amplified is applied to the integrating circuit 6, 7, the voltage at the trigger electrode 3 thus building up until the valve discharges, discharging the integrating circuit and also quenching itself by virtue of the large anode resistor 9. As a result, the period between successive discharges and thus the mean current through the valve is a function of the voltage to be amplified. A condenser 12 is provided to average out the pulses of current through the valve. A further resistor 18 and rectifier 17 may be provided to increase the stability of the circuit, the resistor 18 being of large value (e.g. 200 megohms) and so providing a small continuous discharge which is insufficient to strike the main discharge but is sufficient to produce enough ionization to illuminate unstable operation. The valve employed may alternatively be of a type employing a " keep-alive" electrode. In the circuit shown in Fig. 3, the voltage source to be controlled is connected between terminals 34 and 35 and the output is taken from terminals 36 and 37. A portion of the output voltage is tapped off by a potentiometer chain and applied to the trigger electrode of the valve 19 which is of the type employing a " keep-alive" electrode 21. An increase in the input voltage results in an increase in the mean current through the valve and thus tends to reduce the output voltage due to the increased voltage drop in the resistor 32. In an alternative arrangement, Fig. 4 (not shown), a circuit identical to that shown in Fig. 1 is connected in parallel with a potentiometer chain an adjustable tapping on which is connected to the trigger electrode through the integrating circuit and in series with a voltagedropping resistor, the whole being connected across the voltage source to be stabilized, the stabilizedvoltage being taken from the lowpotential end of the dropping resistor.
GB20214/51A 1951-08-28 1951-08-28 Improvements in or relating to electrical circuits using trigger cold-cathode valves Expired GB732776A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NLAANVRAGE7400353,A NL172070B (en) 1951-08-28 PROCESS FOR THE PREPARATION OF AN ELASTOMER ADDUCT FROM MALEIC ANHYDRIDE AND AN ELASTOMER COPOLYMER OF ETHENE, OTHER ALPHA AND NON-CONJUGATED DIES.
NL94439D NL94439C (en) 1951-08-28
GB20214/51A GB732776A (en) 1951-08-28 1951-08-28 Improvements in or relating to electrical circuits using trigger cold-cathode valves
US305127A US2814772A (en) 1951-08-28 1952-08-19 Electrical circuits using cold-cathode triode valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB20214/51A GB732776A (en) 1951-08-28 1951-08-28 Improvements in or relating to electrical circuits using trigger cold-cathode valves

Publications (1)

Publication Number Publication Date
GB732776A true GB732776A (en) 1955-06-29

Family

ID=10142305

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20214/51A Expired GB732776A (en) 1951-08-28 1951-08-28 Improvements in or relating to electrical circuits using trigger cold-cathode valves

Country Status (2)

Country Link
GB (1) GB732776A (en)
NL (2) NL94439C (en)

Also Published As

Publication number Publication date
NL94439C (en)
NL172070B (en)

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