US2073701A - Time-lag cathode circuit arrangement - Google Patents

Time-lag cathode circuit arrangement Download PDF

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Publication number
US2073701A
US2073701A US719841A US71984134A US2073701A US 2073701 A US2073701 A US 2073701A US 719841 A US719841 A US 719841A US 71984134 A US71984134 A US 71984134A US 2073701 A US2073701 A US 2073701A
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time
lag
circuit arrangement
tube
cathode circuit
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Expired - Lifetime
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US719841A
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Lazzarini Eugen
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Telefunken AG
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Telefunken AG
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/52—Circuit arrangements for protecting such amplifiers
    • H03F1/54—Circuit arrangements for protecting such amplifiers with tubes only
    • H03F1/546—Delaying application of anode power supply with respect to application of filament heating power supply

Definitions

  • a relatively small and inexpensive indirectly heated auxiliary tube is provided instead of a mechanical time-lag switch of the kind before mentioned.
  • a is an indirectly heated transmitter tube of comparatively large power, for which connection of the plate voltage source must be effected a certain length of time after connection of the heating or
  • the plate circuit of the same contains the switch knife 7) of a time-lag switch whose energizing winding 0 is contained in the plate circuit of an auxiliary tube d of lower power which is also of the indirectly heated type.
  • a time delay circuit arrangement to retard the connection of the direct current voltage of a 5 comparatively large power transmitter tube comprising a source of anode potential, a resistance across said anode potential source, a relay having its armature connected in series with one side of said source of anode potential and the anode 1 mediate point on said resistance and in series with 15 an indirectly heated auxiliary tube anode which tube is connected at its cathode to the other side of said plate supply.
  • a time delay circuit arrangement to retard the connection of the direct current voltage of a "comparatively large power transmitter tube comprising a source of anode potential, a resistance across said anode potential source, a relay having its armature connected in series with one side of said source of anode potential and the anode of said transmitter tube, the other side of said voltage supply being connected to the cathode of said transmitter tube, said relay having its winding energized by being connected to an intermediate point on said resistance and in series with an indirectly heated auxiliary tube anode which tube is connected at its cathode to the other side of said plate supply, and a transformer for heating the cathodes of both the transmitted tube and said auxiliary tube.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Description

March 16, 1937. E. LAZZARINI 2,073,701
TIME LAG CATHODE CIRCUIT ARRANGEMENT Filed April 10, 1934 INVENTOR ATTORNEY 30 filament circuit.
Patented Mar. 16, 1937 UNITED STATES PATENT OFFICE TIME-LAG CATHODE CIRCUIT ARRANGEMENT Eugen Lazzarini, Berlin, Germany, assignor to Telefunken Gesellschaft fiir Drahtlose Telegraphie m. b. H., Berlin, Germany, a corporation of Germany Application April 10, 1934, Serial No. 719,841 In Germany May 2, 1933 2 Claims.
5 improve the control of cathode circuits.
It is known that when starting the operation of indirectly heated tubes of more than average power, the connection of the plate potential supply must be delayed until the indirectly heated electron emission surface of the cathode has been uniformly incandesced. As a general rule this takes about from 45 to 65 seconds. For the purpose of insuring the said lag in the connection of the plate potential, recourse in the prior art has a usually been to a mechanical time switch. However, such a device is comparatively cumbersome and expensive.
Now, according to this invention a relatively small and inexpensive indirectly heated auxiliary tube is provided instead of a mechanical time-lag switch of the kind before mentioned.
One exemplified embodiment of the basic idea of the invention is schematically illustrated in the drawing. Referring to the latter, a is an indirectly heated transmitter tube of comparatively large power, for which connection of the plate voltage source must be effected a certain length of time after connection of the heating or The plate circuit of the same contains the switch knife 7) of a time-lag switch whose energizing winding 0 is contained in the plate circuit of an auxiliary tube d of lower power which is also of the indirectly heated type. The
2:5 auxiliary tube cl is heated from the same transformer e as the transmitter tube a, thus insuring the same degree of heat being applied to each tube.
I claim:
1. A time delay circuit arrangement to retard the connection of the direct current voltage of a 5 comparatively large power transmitter tube comprising a source of anode potential, a resistance across said anode potential source, a relay having its armature connected in series with one side of said source of anode potential and the anode 1 mediate point on said resistance and in series with 15 an indirectly heated auxiliary tube anode which tube is connected at its cathode to the other side of said plate supply.
2. A time delay circuit arrangement to retard the connection of the direct current voltage of a "comparatively large power transmitter tube comprising a source of anode potential, a resistance across said anode potential source, a relay having its armature connected in series with one side of said source of anode potential and the anode of said transmitter tube, the other side of said voltage supply being connected to the cathode of said transmitter tube, said relay having its winding energized by being connected to an intermediate point on said resistance and in series with an indirectly heated auxiliary tube anode which tube is connected at its cathode to the other side of said plate supply, and a transformer for heating the cathodes of both the transmitted tube and said auxiliary tube.
EUGEN LAZZARINI.
US719841A 1933-05-02 1934-04-10 Time-lag cathode circuit arrangement Expired - Lifetime US2073701A (en)

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DE2073701X 1933-05-02

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2445681A (en) * 1945-04-02 1948-07-20 Leo F Littwin Control apparatus
US2458283A (en) * 1944-10-23 1949-01-04 Automatic Elect Lab Impulse generator
US2470970A (en) * 1943-10-12 1949-05-24 Benoit Frederic Electrical apparatus for use in obstetrics
US2548246A (en) * 1946-12-11 1951-04-10 Girdler Corp Arc-over protective system for high-frequency heating systems
US2586722A (en) * 1948-06-18 1952-02-19 Richmond L Rutherford Pull switch for mine shaft signal systems
US2611011A (en) * 1949-02-26 1952-09-16 Honeywell Regulator Co Electrical timing apparatus
US2611643A (en) * 1947-09-26 1952-09-23 Ralph V Higgins Automatic sprinkling device
US2619525A (en) * 1950-03-15 1952-11-25 Rca Corp Protected time delay power supply system
US2635213A (en) * 1950-07-10 1953-04-14 Collins Radio Co Time delay circuits
US2662155A (en) * 1951-04-20 1953-12-08 James C Heintz & Company Inc Electronic relay control
US2834954A (en) * 1953-04-15 1958-05-13 Gen Dynamics Corp Multi-frequency ringing machine
US2840693A (en) * 1953-12-21 1958-06-24 Rca Corp Transmitter interlock circuit
US2942067A (en) * 1956-09-21 1960-06-21 Gen Dynamics Corp Readout amplifier circuit for toll ticketing
US3002152A (en) * 1955-02-25 1961-09-26 Edward C Yeaton Electronic signal generator
US3178607A (en) * 1960-07-18 1965-04-13 Elox Corp Michigan Edm time delay bias

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2470970A (en) * 1943-10-12 1949-05-24 Benoit Frederic Electrical apparatus for use in obstetrics
US2458283A (en) * 1944-10-23 1949-01-04 Automatic Elect Lab Impulse generator
US2445681A (en) * 1945-04-02 1948-07-20 Leo F Littwin Control apparatus
US2548246A (en) * 1946-12-11 1951-04-10 Girdler Corp Arc-over protective system for high-frequency heating systems
US2611643A (en) * 1947-09-26 1952-09-23 Ralph V Higgins Automatic sprinkling device
US2586722A (en) * 1948-06-18 1952-02-19 Richmond L Rutherford Pull switch for mine shaft signal systems
US2611011A (en) * 1949-02-26 1952-09-16 Honeywell Regulator Co Electrical timing apparatus
US2619525A (en) * 1950-03-15 1952-11-25 Rca Corp Protected time delay power supply system
US2635213A (en) * 1950-07-10 1953-04-14 Collins Radio Co Time delay circuits
US2662155A (en) * 1951-04-20 1953-12-08 James C Heintz & Company Inc Electronic relay control
US2834954A (en) * 1953-04-15 1958-05-13 Gen Dynamics Corp Multi-frequency ringing machine
US2840693A (en) * 1953-12-21 1958-06-24 Rca Corp Transmitter interlock circuit
US3002152A (en) * 1955-02-25 1961-09-26 Edward C Yeaton Electronic signal generator
US2942067A (en) * 1956-09-21 1960-06-21 Gen Dynamics Corp Readout amplifier circuit for toll ticketing
US3178607A (en) * 1960-07-18 1965-04-13 Elox Corp Michigan Edm time delay bias

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