GB413383A - Variable attenuation networks capable of providing automatic volume control of alternating signal currents - Google Patents

Variable attenuation networks capable of providing automatic volume control of alternating signal currents

Info

Publication number
GB413383A
GB413383A GB239033A GB239033A GB413383A GB 413383 A GB413383 A GB 413383A GB 239033 A GB239033 A GB 239033A GB 239033 A GB239033 A GB 239033A GB 413383 A GB413383 A GB 413383A
Authority
GB
United Kingdom
Prior art keywords
networks
control voltage
shunt
resistance
valve
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
GB239033A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB239033A priority Critical patent/GB413383A/en
Publication of GB413383A publication Critical patent/GB413383A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H03G1/0052—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using diodes

Landscapes

  • Circuits Of Receivers In General (AREA)
  • Selective Calling Equipment (AREA)
  • Toys (AREA)

Abstract

413,383. Valve circuits for wireless reception ; impedance networks. RYALL, L. E., 52, Crescent Gardens, Eastcote, Middlesex. Jan. 25, 1933, No. 2390. [Classes 40 (iii) and 40 (v).] The attenuation of a network comprising one or more metal plate rectifiers arranged as series and /or shunt elements is varied by a D.C. control voltage derived from the main anode current of a valve which varies in accordance with the amplitude of signals applied to its grid. The network may comprise a series rectifier 7, Fig. 1, and shunt resistances 5, 6, the control voltage V being applied to the terminals 8, 9 or a shunt rectifier 14, Fig. 2, and parallel resistance 17 the control voltage V being applied to the terminals 15, 16. In a double arrangement, Fig. 3, series and shunt rectifiers 25, 26 respectively are used, a steady auxiliary voltage v from a source 24 being applied through a resistance 27 to the rectifiers, and the control voltage V to the points 22, 23. Two or more networks may be connected in cascade, as shown in Fig. 6, where two networks 54-61 are interposed between the aerial 53 and the radio frequency amplifier 62 of a radio receiver. The steady auxiliary voltage for the attenuation networks is derived from a resistance 65 forming part of a voltage divider 64-66 connected across the anode supply source, and is applied across condensers 74, 75 in the networks. The control voltage depends on the mean anode current in the detector valve 52 and is applied to the condensers 69, 70 in the networks from the anode of valve 52 through the filter 72, 73. The initial value of the control voltage is regulated by varying the resistance 64, and the attenuation is varied according to the amplitude of the signal to give a constant output from the receiver. The invention is also stated to be adapted for rendering an amplifier inoperative until a signal of above a certain amplitude is received.
GB239033A 1933-01-25 1933-01-25 Variable attenuation networks capable of providing automatic volume control of alternating signal currents Expired GB413383A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB239033A GB413383A (en) 1933-01-25 1933-01-25 Variable attenuation networks capable of providing automatic volume control of alternating signal currents

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB239033A GB413383A (en) 1933-01-25 1933-01-25 Variable attenuation networks capable of providing automatic volume control of alternating signal currents

Publications (1)

Publication Number Publication Date
GB413383A true GB413383A (en) 1934-07-19

Family

ID=9738697

Family Applications (1)

Application Number Title Priority Date Filing Date
GB239033A Expired GB413383A (en) 1933-01-25 1933-01-25 Variable attenuation networks capable of providing automatic volume control of alternating signal currents

Country Status (1)

Country Link
GB (1) GB413383A (en)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE866053C (en) * 1936-10-15 1953-02-05 Siemens Ag Circuit arrangement for loudspeaker systems
US2668233A (en) * 1948-07-19 1954-02-02 Sylvania Electric Prod Automatic noise limiter
DE1007822B (en) * 1953-11-12 1957-05-09 Pintsch Electro Gmbh Circuit for influencing a pipe characteristic, especially a modulation characteristic
DE1041539B (en) * 1956-12-14 1958-10-23 Siemens Ag Circuit arrangement for telecommunications systems for converting control signals, preferably direct current control signals, into alternating current control signals
US2895045A (en) * 1957-09-26 1959-07-14 Avco Mfg Corp Radio receiver with transistorized audio - detector and automatic gain control circuitry
DE1062749B (en) * 1956-06-04 1959-08-06 Telefunken Gmbh Circuit arrangement for automatic level control in communication systems
US2941070A (en) * 1954-06-01 1960-06-14 Hazeltine Research Inc Constantly forward biased non-linear element across detector input for controlling gain automatically
US2967236A (en) * 1957-10-10 1961-01-03 Rca Corp Signal receiving systems
DE1103993B (en) * 1955-10-27 1961-04-06 Teletype Corp Crystal-controlled transistor oscillating circuit
US2981835A (en) * 1955-10-21 1961-04-25 Texas Instruments Inc Automatic gain control system
DE1108277B (en) * 1950-08-02 1961-06-08 Int Standard Electric Corp Arrangement for the gain control of radio message receivers with at least two transistor amplifier stages coupled by a resonance circuit
US3035170A (en) * 1956-05-15 1962-05-15 Texas Instruments Inc Automatic gain controls for radios
US3052853A (en) * 1959-06-03 1962-09-04 Bendix Corp Attenuator for strong signals in a radio receiver
US3089961A (en) * 1958-01-03 1963-05-14 Sperry Rand Corp Binary logic circuits employing transformer and enhancement diode combination
US3110862A (en) * 1961-08-10 1963-11-12 Bell Telephone Labor Inc Coherent carrier regenerator
DE1160510B (en) * 1961-02-24 1964-01-02 Siemens Ag Circuit arrangement for automatically holding constant the voltage of transistor pilot voltage sources for carrier frequency systems
US3121198A (en) * 1960-08-24 1964-02-11 F V Topping Electronics Ltd A.c. signal polarizing circuit
DE1167401B (en) * 1959-08-14 1964-04-09 Telefunken Patent Tuned transistor amplifier for high frequencies with automatic gain control
US3153189A (en) * 1961-02-15 1964-10-13 Westinghouse Electric Corp Attenuation network automatically controlled by level of signal carrier
US3272996A (en) * 1959-12-31 1966-09-13 Rca Corp Signal limiter
DE1258481B (en) * 1956-04-07 1968-01-11 Philips Nv Radio receiving circuit with regulation
DE1267286B (en) * 1959-03-05 1968-05-02 Philips Nv Receive circuit with gain control
DE1273612B (en) * 1964-06-11 1968-07-25 Siemens Ag Albis Circuit arrangement for the electronic regulation of the amplitude of a high-frequency signal and use of the circuit arrangement in a monopulse radar device
DE1616748B1 (en) * 1961-10-19 1970-03-12 Philips Nv Transistor amplifier for high-frequency oscillations with automatic coupled amplification and bandwidth control
DE2260072A1 (en) * 1972-12-08 1974-06-20 Saba Gmbh ADJUSTABLE ATTENUATOR WITH PINDIODS

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE866053C (en) * 1936-10-15 1953-02-05 Siemens Ag Circuit arrangement for loudspeaker systems
US2668233A (en) * 1948-07-19 1954-02-02 Sylvania Electric Prod Automatic noise limiter
DE1108277B (en) * 1950-08-02 1961-06-08 Int Standard Electric Corp Arrangement for the gain control of radio message receivers with at least two transistor amplifier stages coupled by a resonance circuit
DE1007822B (en) * 1953-11-12 1957-05-09 Pintsch Electro Gmbh Circuit for influencing a pipe characteristic, especially a modulation characteristic
US2941070A (en) * 1954-06-01 1960-06-14 Hazeltine Research Inc Constantly forward biased non-linear element across detector input for controlling gain automatically
US2981835A (en) * 1955-10-21 1961-04-25 Texas Instruments Inc Automatic gain control system
DE1103993B (en) * 1955-10-27 1961-04-06 Teletype Corp Crystal-controlled transistor oscillating circuit
DE1258481B (en) * 1956-04-07 1968-01-11 Philips Nv Radio receiving circuit with regulation
US3035170A (en) * 1956-05-15 1962-05-15 Texas Instruments Inc Automatic gain controls for radios
DE1062749B (en) * 1956-06-04 1959-08-06 Telefunken Gmbh Circuit arrangement for automatic level control in communication systems
DE1041539B (en) * 1956-12-14 1958-10-23 Siemens Ag Circuit arrangement for telecommunications systems for converting control signals, preferably direct current control signals, into alternating current control signals
US2895045A (en) * 1957-09-26 1959-07-14 Avco Mfg Corp Radio receiver with transistorized audio - detector and automatic gain control circuitry
US2967236A (en) * 1957-10-10 1961-01-03 Rca Corp Signal receiving systems
US3089961A (en) * 1958-01-03 1963-05-14 Sperry Rand Corp Binary logic circuits employing transformer and enhancement diode combination
DE1267286B (en) * 1959-03-05 1968-05-02 Philips Nv Receive circuit with gain control
US3052853A (en) * 1959-06-03 1962-09-04 Bendix Corp Attenuator for strong signals in a radio receiver
DE1167401B (en) * 1959-08-14 1964-04-09 Telefunken Patent Tuned transistor amplifier for high frequencies with automatic gain control
US3272996A (en) * 1959-12-31 1966-09-13 Rca Corp Signal limiter
US3121198A (en) * 1960-08-24 1964-02-11 F V Topping Electronics Ltd A.c. signal polarizing circuit
US3153189A (en) * 1961-02-15 1964-10-13 Westinghouse Electric Corp Attenuation network automatically controlled by level of signal carrier
DE1160510B (en) * 1961-02-24 1964-01-02 Siemens Ag Circuit arrangement for automatically holding constant the voltage of transistor pilot voltage sources for carrier frequency systems
US3110862A (en) * 1961-08-10 1963-11-12 Bell Telephone Labor Inc Coherent carrier regenerator
DE1616748B1 (en) * 1961-10-19 1970-03-12 Philips Nv Transistor amplifier for high-frequency oscillations with automatic coupled amplification and bandwidth control
DE1273612B (en) * 1964-06-11 1968-07-25 Siemens Ag Albis Circuit arrangement for the electronic regulation of the amplitude of a high-frequency signal and use of the circuit arrangement in a monopulse radar device
DE2260072A1 (en) * 1972-12-08 1974-06-20 Saba Gmbh ADJUSTABLE ATTENUATOR WITH PINDIODS

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