GB349483A - Improvements in the design of radio and sound reproducing apparatus and the like - Google Patents

Improvements in the design of radio and sound reproducing apparatus and the like

Info

Publication number
GB349483A
GB349483A GB233030A GB233030A GB349483A GB 349483 A GB349483 A GB 349483A GB 233030 A GB233030 A GB 233030A GB 233030 A GB233030 A GB 233030A GB 349483 A GB349483 A GB 349483A
Authority
GB
United Kingdom
Prior art keywords
valve
grid
circuits
shunted
choke
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
GB233030A
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.)
EDWARD HENRY ROBERTS
Original Assignee
EDWARD HENRY ROBERTS
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 EDWARD HENRY ROBERTS filed Critical EDWARD HENRY ROBERTS
Priority to GB233030A priority Critical patent/GB349483A/en
Publication of GB349483A publication Critical patent/GB349483A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/42—Amplifiers with two or more amplifying elements having their dc paths in series with the load, the control electrode of each element being excited by at least part of the input signal, e.g. so-called totem-pole amplifiers
    • H03F3/44—Amplifiers with two or more amplifying elements having their dc paths in series with the load, the control electrode of each element being excited by at least part of the input signal, e.g. so-called totem-pole amplifiers with tubes only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Constitution Of High-Frequency Heating (AREA)

Abstract

349,483. Valve amplifying circuits. HENRY, P., 6, Vaughan Street, and ROBERTS, E. H., 283, Legrams Lane, both in Bradford, Yorkshire. Jan. 23, 1930, No. 2330. [Class 40 (v).] An amplifying circuit for radio reception and sound reproduction has separate cathode heating circuits for each valve, and the anode of each valve is directly connected to the grid of the succeeding valve. As shown in the Figure for a low frequency amplifying circuit, the cathodes of the two valves V, V<1> are heated by separate circuits 1, 2 from A.C. mains. The plate P of the first valve V is connected directly to the grid G of the second valve, and between the plate P and the cathode of the valve V<1> are connected in series a coupling-choke C and a grid-biasing resistance R, the latter being shunted by a condenser B. The H.T. supply is shunted by a potentiometer Rx, and condensers Bx, which have their intermediate points connected to the valve cathodes. For high-frequency amplification, screen-grid valves may be used (Fig. 2, not shown), and the choke C is replaced by a tuned circuit. Reference has been directed by the Comptroller to Specifications 289,217, 290,032, 300,511, 309,044, 310,539, 330,956 and 335,484, [all in Class 40 (v), Wireless signalling &c.].
GB233030A 1930-01-23 1930-01-23 Improvements in the design of radio and sound reproducing apparatus and the like Expired GB349483A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB233030A GB349483A (en) 1930-01-23 1930-01-23 Improvements in the design of radio and sound reproducing apparatus and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB233030A GB349483A (en) 1930-01-23 1930-01-23 Improvements in the design of radio and sound reproducing apparatus and the like

Publications (1)

Publication Number Publication Date
GB349483A true GB349483A (en) 1931-05-26

Family

ID=9737639

Family Applications (1)

Application Number Title Priority Date Filing Date
GB233030A Expired GB349483A (en) 1930-01-23 1930-01-23 Improvements in the design of radio and sound reproducing apparatus and the like

Country Status (1)

Country Link
GB (1) GB349483A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2474435A (en) * 1945-01-08 1949-06-28 Philco Corp Vacuum tube amplifier
DE758535C (en) * 1939-02-16 1953-01-26 Marconi Wireless Telegraph Co Modulation circuit, in particular for broadband modulation of a high-frequency transmitter
DE763749C (en) * 1937-05-11 1953-05-04 Hazeltine Corp Broadband amplifier
DE745671C (en) * 1935-04-25 1954-03-01 Elektrowerk G M B H Circuit arrangement for filter chains to calm high DC voltages
US2683805A (en) * 1952-06-11 1954-07-13 Motorola Inc Television receiver
US2754376A (en) * 1952-12-24 1956-07-10 Igor E Grosdoff Amplifier system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE745671C (en) * 1935-04-25 1954-03-01 Elektrowerk G M B H Circuit arrangement for filter chains to calm high DC voltages
DE763749C (en) * 1937-05-11 1953-05-04 Hazeltine Corp Broadband amplifier
DE758535C (en) * 1939-02-16 1953-01-26 Marconi Wireless Telegraph Co Modulation circuit, in particular for broadband modulation of a high-frequency transmitter
US2474435A (en) * 1945-01-08 1949-06-28 Philco Corp Vacuum tube amplifier
US2683805A (en) * 1952-06-11 1954-07-13 Motorola Inc Television receiver
US2754376A (en) * 1952-12-24 1956-07-10 Igor E Grosdoff Amplifier system

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