FR751966A - Switching device for wave changing coils of radio receivers - Google Patents

Switching device for wave changing coils of radio receivers

Info

Publication number
FR751966A
FR751966A FR751966DA FR751966A FR 751966 A FR751966 A FR 751966A FR 751966D A FR751966D A FR 751966DA FR 751966 A FR751966 A FR 751966A
Authority
FR
France
Prior art keywords
switching device
radio receivers
wave changing
changing coils
coils
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
Other languages
French (fr)
Inventor
Alwin Th Richter
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 filed Critical
Application granted granted Critical
Publication of FR751966A publication Critical patent/FR751966A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • 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
    • H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H29/00—Switches having at least one liquid contact
    • H01H29/20—Switches having at least one liquid contact operated by tilting contact-liquid container
    • H01H29/22—Switches having at least one liquid contact operated by tilting contact-liquid container wherein contact is made and broken between liquid and solid
FR751966D 1933-02-16 1933-03-04 Switching device for wave changing coils of radio receivers Expired FR751966A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB4837/33A GB414441A (en) 1933-02-16 1933-02-16 Improvements in or relating to wireless receiving apparatus
BE394610T 1933-02-25
FR751966T 1933-03-04

Publications (1)

Publication Number Publication Date
FR751966A true FR751966A (en) 1933-09-12

Family

ID=9784716

Family Applications (1)

Application Number Title Priority Date Filing Date
FR751966D Expired FR751966A (en) 1933-02-16 1933-03-04 Switching device for wave changing coils of radio receivers

Country Status (3)

Country Link
BE (1) BE394610A (en)
FR (1) FR751966A (en)
GB (1) GB414441A (en)

Also Published As

Publication number Publication date
GB414441A (en) 1934-08-09
BE394610A (en) 1933-03-31

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