US2206238A - Oscillatory circuits - Google Patents

Oscillatory circuits Download PDF

Info

Publication number
US2206238A
US2206238A US132050A US13205037A US2206238A US 2206238 A US2206238 A US 2206238A US 132050 A US132050 A US 132050A US 13205037 A US13205037 A US 13205037A US 2206238 A US2206238 A US 2206238A
Authority
US
United States
Prior art keywords
tube
cathode
oscillatory circuits
inter
variation
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
US132050A
Other languages
English (en)
Inventor
Rochow Hans
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.)
Alcatel Lucent Deutschland AG
C Lorenz AG
Original Assignee
Standard Elektrik Lorenz AG
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 Standard Elektrik Lorenz AG filed Critical Standard Elektrik Lorenz AG
Application granted granted Critical
Publication of US2206238A publication Critical patent/US2206238A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only

Definitions

  • the invention has for its object to avoid these diflioulties and to such end provides for compensating the said special frequency change in ⁇ a peculiar manner, as will be understood from the following description and be particularly 25 pointed out in the appended claim, reference being had to the accompanying drawing that shows an example of a circuit arrangement as provided by the invention.
  • the ⁇ example illustrated is a feed-back connec- 30 tion and comprises a tube E that has three elec- ⁇ trodes one of which is a glowing-cathode C.
  • the variation in the interelectrode capacities is compensated by a variable additional capacity connected in parallel with the inter-electrode capacities and cone stituted by a condenser that consists of a metal plate A and a birnetallic strip or spring B. Plate A is connected to the anode, as shown.
  • Spring ⁇ B is heated by a coil H connected in parallel with cathode C.
  • Spring B is disposed in a jacket or any other casing or envelopment J made of a material which is a non-conductor of heat.
  • spring B is given a time constant which is equal to that of tube E, that is to say, the final capacity value of spring B is' reached in the same time as that of tube E,
  • An oscillatory circuit including a glowing cathode tube and means associated therewith for opposing frequency changes resulting from changes in the constants of said tube during operation thereof comprising a condenser connected directly between the anode and cathode of said tube, a bi-rnetallic strip having an electrie heating element connected in parallel with ⁇ said cathode for varying the capacity of said condenser and a heat insulating jacket surrounding 'said strip and saidheating element, said jacket being so proportioned that the final value of capacity of the said condenser as controlled by said loi-metallic strip is reached at the ⁇ same time as the fnalcapacity of said tube upon heating up of said circuit.

Landscapes

  • General Induction Heating (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
US132050A 1936-04-04 1937-03-20 Oscillatory circuits Expired - Lifetime US2206238A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE194299X 1936-04-04

Publications (1)

Publication Number Publication Date
US2206238A true US2206238A (en) 1940-07-02

Family

ID=31983717

Family Applications (1)

Application Number Title Priority Date Filing Date
US132050A Expired - Lifetime US2206238A (en) 1936-04-04 1937-03-20 Oscillatory circuits

Country Status (6)

Country Link
US (1) US2206238A (enrdf_load_html_response)
AT (1) AT158530B (enrdf_load_html_response)
BE (1) BE420763A (enrdf_load_html_response)
CH (1) CH194299A (enrdf_load_html_response)
FR (1) FR819706A (enrdf_load_html_response)
GB (1) GB473955A (enrdf_load_html_response)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2437345A (en) * 1943-02-13 1948-03-09 Zenith Radio Corp Temperature compensated variable inductance
US2483070A (en) * 1946-05-02 1949-09-27 Rauland Corp Automatic frequency control circuit
US2539218A (en) * 1949-06-21 1951-01-23 Gen Electric Temperature compensating system for oscillators

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2437345A (en) * 1943-02-13 1948-03-09 Zenith Radio Corp Temperature compensated variable inductance
US2483070A (en) * 1946-05-02 1949-09-27 Rauland Corp Automatic frequency control circuit
US2539218A (en) * 1949-06-21 1951-01-23 Gen Electric Temperature compensating system for oscillators

Also Published As

Publication number Publication date
GB473955A (en) 1937-10-22
BE420763A (enrdf_load_html_response) 1937-04-30
CH194299A (de) 1937-11-30
AT158530B (de) 1940-04-25
FR819706A (fr) 1937-10-26

Similar Documents

Publication Publication Date Title
US2222902A (en) High frequency apparatus
US2179261A (en) Method and apparatus for heating dielectric materials
US2151752A (en) Compensator
US2206238A (en) Oscillatory circuits
US2337219A (en) Short wave tuned circuit arrangement
US1787300A (en) Electric-discharge device
US1945545A (en) Frequency control system
US2093331A (en) Oscillation generator
US2153131A (en) High frequency oscillator
US1875953A (en) Piezo electric crystal control system
US2114846A (en) Frequency stabilizing device
US2158844A (en) Temperature compensated oscillator
US2539218A (en) Temperature compensating system for oscillators
US2584796A (en) Stabilized oscillator
US2103457A (en) Frequency control line and circuit
US2097297A (en) Mercury vapor discharge device
GB629628A (en) Improvements in or relating to ultra-high frequency apparatus
US1996569A (en) Piezo-electric device
US2308945A (en) High-frequency induction furnace
US1857029A (en) Cooled radiofrequency apparatus
US2058260A (en) Oscillation generator
US1959156A (en) Electron discharge system
US1975164A (en) Grid-controlled mercury arc tube
US2097100A (en) Temperature actuated electrical
US2058738A (en) Electrical circuit for cold cathode tubes