GB724613A - Improvements in thermionic valve amplifiers - Google Patents

Improvements in thermionic valve amplifiers

Info

Publication number
GB724613A
GB724613A GB1655153A GB1655153A GB724613A GB 724613 A GB724613 A GB 724613A GB 1655153 A GB1655153 A GB 1655153A GB 1655153 A GB1655153 A GB 1655153A GB 724613 A GB724613 A GB 724613A
Authority
GB
United Kingdom
Prior art keywords
oscillator
output stage
amplifier
bias
stage
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
GB1655153A
Inventor
David Whitehead Boston
William Clemence Codringt Ball
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.)
BRITISH ACOUSTIC FILMS Ltd
Original Assignee
BRITISH ACOUSTIC FILMS Ltd
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 BRITISH ACOUSTIC FILMS Ltd filed Critical BRITISH ACOUSTIC FILMS Ltd
Priority to GB1655153A priority Critical patent/GB724613A/en
Publication of GB724613A publication Critical patent/GB724613A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference
    • H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)

Abstract

724,613. Valve circuits. BRITISH ACOUSTIC FILMS, Ltd. June 16, 1953, No. 16551/53. Class 40 (6). In a thermionic valve amplifier of type having its input stage, H.T. and filament circuits fed with power from a supersonic oscillator, the oscillator also provides the grid bias for the output stage. The Figure shows an amplifier comprising an input stage V1 feeding a pushpull output stage V2A, V2B. In accordance with Specification 665,967 the H.T. and heater supply for V1 is derived from a conventional supersonic oscillator V3 and V1 is coupled to the output stage through a balanced transformer so that hum pick-up from the mains supply feeding the oscillator and output stage is minimized. The grid bias for the output stage is obtained either from the grid-bias circuit C14, R15 of the oscillator or from a rectifier coupled to the output of the oscillator (Fig. 3, not shown). When the amplifier is used for reproducing film or magnetic tape recordings the oscillator may also supply the power for the lamp or the bias and erase voltages.
GB1655153A 1953-06-16 1953-06-16 Improvements in thermionic valve amplifiers Expired GB724613A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1655153A GB724613A (en) 1953-06-16 1953-06-16 Improvements in thermionic valve amplifiers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1655153A GB724613A (en) 1953-06-16 1953-06-16 Improvements in thermionic valve amplifiers

Publications (1)

Publication Number Publication Date
GB724613A true GB724613A (en) 1955-02-23

Family

ID=10079355

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1655153A Expired GB724613A (en) 1953-06-16 1953-06-16 Improvements in thermionic valve amplifiers

Country Status (1)

Country Link
GB (1) GB724613A (en)

Similar Documents

Publication Publication Date Title
GB714812A (en) Electric signal translating circuits employing transistors
GB1376059A (en) Amplifier circuit
GB766744A (en) Semi-conductor signal receiving system
GB1513828A (en) Variable gain amplifiers
GB724613A (en) Improvements in thermionic valve amplifiers
GB896099A (en) Improvements in or relating to transistor amplifiers
GB1073206A (en) Improvements in or relating to amplifier circuit arrangements
GB849316A (en) Improvements in or relating to transistor amplifier circuits
US2299398A (en) Noiseless sound reproducing system
US1912415A (en) Photo electric system
GB1196323A (en) Preamplifier Arrangements for use in a system for Reproducing Signals from a Magnetic Medium such as a Tape
GB817417A (en) Automatic gain control arrangements for transistor amplifiers
GB1048962A (en) Transistor signal-translating apparatus for line voltage operation
GB780665A (en) Improvements relating to electronic audio frequency amplifiers
US3057968A (en) Noise suppression system
GB876042A (en) Improvements in or relating to transistor circuit arrangements for demodulating and amplifying signals
GB906512A (en) Improvements in balanced input amplifiers
GB875063A (en) Improvements in or relating to signal expanders
GB857643A (en) Improvements in push-pull power amplifier
GB771945A (en) Improvements in or relating to transistor amplifiers
GB792418A (en) Improvements in electric circuits including amplitude limiting semiconductor devices
GB1026174A (en) Improvements relating to electrical modulating circuits
GB867954A (en) Improvements in transistor circuit arrangements
GB868704A (en) Improvements relating to temperature stabilisation of transistor amplifiers
GB757214A (en) Improvements in or relating to transistor amplifier circuits