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
GB21944/32A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NVfiledCriticalPhilips Gloeilampenfabrieken NV
Publication of GB385560ApublicationCriticalpatent/GB385560A/en
H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
H04B1/06—Receivers
H04B1/16—Circuits
H04B1/22—Circuits for receivers in which no local oscillation is generated
385,560. Valve circuits for wireless reception. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. Aug. 4, 1932, No. 21944. Convention date, Aug. 18, 1931. [Classes 40 (iii) and 40 (v).] Two or more capacitatively coupled tuning- circuits I, II, Fig. 1, are used, and valves V2, D are coupled by a choke Sm resonating just above the longest wave to be received. When two wave bands are to be received, the choke is shunted by a condenser Cp on the lower wave band. To avoid switching, a coupling resistance R, Fig. 2, is shunted by two bye-passes comprising respectively a condenser C2 and an inductance L and a condenser C1 in series.
GB21944/32A1931-08-181932-08-04Improvements in radio receiving circuits
ExpiredGB385560A
(en)