US1615044A - Transformer circuit - Google Patents

Transformer circuit Download PDF

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Publication number
US1615044A
US1615044A US580533A US58053322A US1615044A US 1615044 A US1615044 A US 1615044A US 580533 A US580533 A US 580533A US 58053322 A US58053322 A US 58053322A US 1615044 A US1615044 A US 1615044A
Authority
US
United States
Prior art keywords
winding
circuit
resistance
transformer
frequency
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
US580533A
Other languages
English (en)
Inventor
Edward O Scriven
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 FR506580A priority Critical patent/FR506580A/fr
Priority to FR22156A priority patent/FR22156E/fr
Priority to FR22913A priority patent/FR22913E/fr
Priority to FR22919A priority patent/FR22919E/fr
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Priority to US580533A priority patent/US1615044A/en
Priority to GB32845/22A priority patent/GB202262A/en
Priority to FR27180D priority patent/FR27180E/fr
Application granted granted Critical
Publication of US1615044A publication Critical patent/US1615044A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/02—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with tubes only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/22—Safety features
    • B65D90/38—Means for reducing the vapour space or for reducing the formation of vapour within containers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/42—Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/02—Tubes with a single discharge path
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
    • H01J9/042—Manufacture, activation of the emissive part
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0002—Construction arrangements of electrode systems

Definitions

  • This invention relates to transformers and transformer circuits and particularly to circuits in which a transformer is employedto connect a vacuum tube amplifier to a source of impulses to be am lified.
  • transformers In amplifiers for speech requencies, transformers have heretofore been used having either an actual inductance or leakage inductance resonating with the tube capacity at a frequency in the upper part of theaudible range. This produces an increase in gain at the upper frequencies which would otherwise be attenuatedby the shunt capacity.
  • the gain at the resonance frequency may be sufiicient to cause the circuit to sing.
  • An object of this invention is to reduce the gain in circuits of the above type at and near the resonant frequency, without substantially reducing the gain at lower frequencies.
  • Another object of the invention is to provide an economical method of shunting a transformer winding with resistance.
  • a few turns of wire, forming a third winding 20 are employed. If the resistance of the turns is properly chosen, the terminals may be connected through a simple conductor of negligible resistance, as in Fig. 1, or a small resistance 28 may be inserted as shown in Fig. 2.
  • the tertiary winding may comprise 20 turns of #31 wire.
  • the resistance of the tertiary winding circuit is about one ohm and is the equivalent of a resistance of about 500,000 ohms connected across the secondary.
  • the gain characteristic of the circuit after the insertion of the third Winding is shown in curve B, in Fig. 5. It will be noted that in the lower part of the speech range there is a loss of only two miles of standard cable,
  • the terminals of a few turns of the secondary winding may be connected by a conductor of low resistance as shown at 32 in Fig. 4. In general, however, it is more convenient to use a separate winding. If desired, the third winding 26 may have its potential established by a connection to the secondary winding, as shown in Fig. 1.
  • a telephone repeating transformer comprising main windings and means for damping the resonance of the transformer at a selected portion of the speech frequency range comprising a third winding with a less number of turns than said main windings having its terminals connected by a path of lowresistance, the resistance of the circuit comprising said third winding and said path being so proportioned to the voltage developed across said third winding as to be the equivalent of a large resistance connected across one of said main windings.
  • a vacuum tube ampli bomb having leakage reactance, said leakage reactance resonating with the capacity of said tube at a frequency in the upper part of the voice range, and a tertiary circuit and resistance inductively coupled with said transformer for damping said resonance.
  • An amplifying circuit for repeating a broad band of frequencies comprising a transformer, with primary and secondary windings, said circuit having a resonance region tending to give the wave components in the resonance region a greater amplification than the wave components throughout the remainder of the band of frequencies to be repeated, and thereby distort the form of the waves repeated, at tertiary winding inductively related to said circuit'and a resistance associated with saidtertiary winding, said resistance and tertiary winding being proportioned with respect to the other elements of the circuit to reduce selectively the amplification over the resonance region and sub stantially annul the distortive properties of said circuit.
  • a telephone repeating coil comprising primary and secondary windings, said coil having a frequency amplitude characteristic which is non-uniform with frequency within the frequency limits of the waves to be transmitted through said coil, and a third winding having a less num ber of turns than either of said mentioned windings, said third winding being inductivelycoupled to said coil, and connected in a circuit of low impedance, the impedance and turns-ratio of said'circuit with respect to theother elements of the circuit being so proportioned asto have a compensating action on the non-uniform frequency amplitude characteristic of said repeating coil.
  • an amplifier in a wave transmission circuit, an amplifier, a transformer associating said ampliher with said circuit, the system formed by said elements having a point of maximum gain at a particular part of the frequency range tending to cause the system to sing at said part of the frequency range, and means comprising an auxiliary winding inductively coupled to the windings of said transformers to receive energy therefrom and having its terminals out of energy transfer relation with the path of transmission of waves through said system, the constantsof said auxiliary means being so proportioned with respect to the other elements of the circuit as to counteract the tendency of said circuit to sing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Amplifiers (AREA)
  • Coils Or Transformers For Communication (AREA)
US580533A 1922-08-08 1922-08-08 Transformer circuit Expired - Lifetime US1615044A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FR506580A FR506580A (fr) 1922-08-08 1915-02-10 Dispositifs amplificateurs d'énergies électriques
FR22156A FR22156E (fr) 1922-08-08 1915-12-21 Dispositifs amplificateurs d'énergies électriques
FR22913A FR22913E (fr) 1922-08-08 1920-03-29 Dispositifs amplificateurs d'énergies électriques
FR22919A FR22919E (fr) 1922-08-08 1920-04-02 Dispositif pour l'emmagasinage et la distribution de liquides dangereux
US580533A US1615044A (en) 1922-08-08 1922-08-08 Transformer circuit
GB32845/22A GB202262A (en) 1922-08-08 1922-12-01 Improvements in electric transformers and circuits therefor
FR27180D FR27180E (fr) 1922-08-08 1922-12-19 Dispositifs amplificateurs d'énergie électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US580533A US1615044A (en) 1922-08-08 1922-08-08 Transformer circuit

Publications (1)

Publication Number Publication Date
US1615044A true US1615044A (en) 1927-01-18

Family

ID=24321488

Family Applications (1)

Application Number Title Priority Date Filing Date
US580533A Expired - Lifetime US1615044A (en) 1922-08-08 1922-08-08 Transformer circuit

Country Status (3)

Country Link
US (1) US1615044A (fr)
FR (5) FR506580A (fr)
GB (1) GB202262A (fr)

Also Published As

Publication number Publication date
FR27180E (fr) 1924-05-19
FR22913E (fr) 1921-09-06
FR506580A (fr) 1920-08-25
FR22156E (fr) 1921-05-14
GB202262A (en) 1923-11-01
FR22919E (fr) 1921-09-06

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