GB604853A - Improvements in or relating to radio-receivers or amplifiers arranged to be fed from direct current mains - Google Patents

Improvements in or relating to radio-receivers or amplifiers arranged to be fed from direct current mains

Info

Publication number
GB604853A
GB604853A GB33018/45A GB3301845A GB604853A GB 604853 A GB604853 A GB 604853A GB 33018/45 A GB33018/45 A GB 33018/45A GB 3301845 A GB3301845 A GB 3301845A GB 604853 A GB604853 A GB 604853A
Authority
GB
United Kingdom
Prior art keywords
fed
direct current
radio
relay
capacitors
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
GB33018/45A
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.)
Philips Lamps Ltd
Koninklijke Philips NV
Original Assignee
Philips Lamps Ltd
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 Lamps Ltd, Philips Gloeilampenfabrieken NV filed Critical Philips Lamps Ltd
Publication of GB604853A publication Critical patent/GB604853A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/14—Arrangements for reducing ripples from dc input or output

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

604,853. Valve circuits for radio reception. PHILIPS LAMPS, Ltd. Dec. 6, 1945, No. 33018. Convention date; Aug. 28, 1940. [Class 40 (vi)] A radio receiver is fed from direct current mains 1 through a filter comprising chokes 3, 4 and electrolytic capacitors 5, 6. A relay coil 9 in the cathode lead of one of the valves 2 controls contacts 7 so that only if the polarity of the supply is such as to cause anode current to flow in valve 2 are capacitors 5, 6 connected in circuit, thus saving damage to the capacitors due to reverse connection. Further contacts controlled by relay 9 may serve to mute the loud-speaker until the relay has operated. Grid bias for one or more valves may be taken from coil 9.
GB33018/45A 1940-08-28 1945-12-06 Improvements in or relating to radio-receivers or amplifiers arranged to be fed from direct current mains Expired GB604853A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL604853X 1940-08-28

Publications (1)

Publication Number Publication Date
GB604853A true GB604853A (en) 1948-07-12

Family

ID=19787897

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33018/45A Expired GB604853A (en) 1940-08-28 1945-12-06 Improvements in or relating to radio-receivers or amplifiers arranged to be fed from direct current mains

Country Status (1)

Country Link
GB (1) GB604853A (en)

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