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
GB17278/39A
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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Filing date
Publication date
Application filed by Telefonaktiebolaget LM Ericsson ABfiledCriticalTelefonaktiebolaget LM Ericsson AB
Publication of GB530576ApublicationCriticalpatent/GB530576A/en
H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
H04L27/00—Modulated-carrier systems
H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
H04L27/06—Demodulator circuits; Receiver circuits
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Engineering & Computer Science
(AREA)
Computer Networks & Wireless Communication
(AREA)
Signal Processing
(AREA)
Rectifiers
(AREA)
Abstract
530,576. Valve relays. TELEFONAKTIEBOLAGET L. M. ERICSSON. June 13, 1939, No. 17278. Convention date, June 14, 1938. [Class 40 (v)] The relay Re which responds to signals having varying amplitudes is connected in the output circuit of a pair of valves E1, E2 connected in push-pull, the input circuits of the valves containing oppositely connected rectifiers g<SP>1</SP>, g2, and the circuit of one valve including a condenser C shunted by resistance R which is arranged so that the bias of valve E1 varies with grid current. If an amplifying valve F is provided, Fig. 2, the circuit R.C. is connected in part of the circuit common to both valves F and E1 as described in Specification 530,575.
GB17278/39A1938-06-141939-06-13Improvements in receiving apparatus for alternating current telegraphy
ExpiredGB530576A
(en)