GB1086671A - Improvements relating to frequency meters and frequency signalling devices - Google Patents

Improvements relating to frequency meters and frequency signalling devices

Info

Publication number
GB1086671A
GB1086671A GB16364A GB16364A GB1086671A GB 1086671 A GB1086671 A GB 1086671A GB 16364 A GB16364 A GB 16364A GB 16364 A GB16364 A GB 16364A GB 1086671 A GB1086671 A GB 1086671A
Authority
GB
United Kingdom
Prior art keywords
frequency
improvements relating
meters
signalling devices
emitters
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
GB16364A
Inventor
Arthur Worland
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.)
Fielden Electronics Ltd
Original Assignee
Fielden Electronics Ltd
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 Fielden Electronics Ltd filed Critical Fielden Electronics Ltd
Priority to GB16364A priority Critical patent/GB1086671A/en
Publication of GB1086671A publication Critical patent/GB1086671A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra

Abstract

1,086,671. Frequency discriminators. FIELDEN ELECTRONICS Ltd. Dec. 29, 1964 [Jan. 2, 1964], No. 163/64. Heading H3A. An input frequency 17 is applied between the commonly connected emitters and bases of a pair of complementary transistors 10 and 14 series connected between a constant voltage and an output filter with shunt capacitor 20, so that a capacitor 18 connected between the emitters and earth is alternately charged from the voltage and discharged to the output filter 20 and 21. The constant voltage is obtained from a Zener diode 7 connected at the output of a half-wave rectifier.
GB16364A 1964-01-02 1964-01-02 Improvements relating to frequency meters and frequency signalling devices Expired GB1086671A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB16364A GB1086671A (en) 1964-01-02 1964-01-02 Improvements relating to frequency meters and frequency signalling devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB16364A GB1086671A (en) 1964-01-02 1964-01-02 Improvements relating to frequency meters and frequency signalling devices

Publications (1)

Publication Number Publication Date
GB1086671A true GB1086671A (en) 1967-10-11

Family

ID=9699514

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16364A Expired GB1086671A (en) 1964-01-02 1964-01-02 Improvements relating to frequency meters and frequency signalling devices

Country Status (1)

Country Link
GB (1) GB1086671A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2117599A1 (en) * 1971-04-10 1972-10-26 PIV Antrieb Werner Reimers KG, 6380 Bad Homburg Pulse frequency voltage converter
US3839673A (en) * 1971-06-07 1974-10-01 Honeywell Inf Systems Precise frequency measuring analog circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2117599A1 (en) * 1971-04-10 1972-10-26 PIV Antrieb Werner Reimers KG, 6380 Bad Homburg Pulse frequency voltage converter
US3839673A (en) * 1971-06-07 1974-10-01 Honeywell Inf Systems Precise frequency measuring analog circuit

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