GB868994A - Frequency indicating and/or control systems - Google Patents

Frequency indicating and/or control systems

Info

Publication number
GB868994A
GB868994A GB4110058A GB4110058A GB868994A GB 868994 A GB868994 A GB 868994A GB 4110058 A GB4110058 A GB 4110058A GB 4110058 A GB4110058 A GB 4110058A GB 868994 A GB868994 A GB 868994A
Authority
GB
United Kingdom
Prior art keywords
frequency
control systems
alternator
bridge
frequency indicating
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
GB4110058A
Inventor
Derek Albert Paice
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.)
Lucas Support Services Ltd
Original Assignee
Rotax 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 Rotax Ltd filed Critical Rotax Ltd
Priority to GB4110058A priority Critical patent/GB868994A/en
Publication of GB868994A publication Critical patent/GB868994A/en
Expired legal-status Critical Current

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Abstract

868,994. Frequency discriminators; automatic frequency control systems. ROTAX Ltd. March 17, 1960 [Dec. 19, 1958], No. 41100/58. Class 40(5) A frequency indicating and/or control system comprising a saturable transformer 4,6 connected to an alternator 3, the secondary 6 of which is connected through a rectifier 7 to a bridge abcd the one arm of which includes a zener diode 10 (or other device, e.g. a borretter having a non- linear current/voltage characteristic) and the other arms of which are so arranged that the output across b, d is either zero or of a known value at a predetermined frequency, the arrangement being such that on a variation of the input frequency the bridge will become unbalanced and the resulting output will be amplified and fed back to alternator 3 to correct the speed thereof. In addition, or alternatively, the unbalance signal will operate a visual or audible warning device. A transistor may be used to amplify said unbalance signal (Fig. 2, not shown).
GB4110058A 1958-12-19 1958-12-19 Frequency indicating and/or control systems Expired GB868994A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4110058A GB868994A (en) 1958-12-19 1958-12-19 Frequency indicating and/or control systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4110058A GB868994A (en) 1958-12-19 1958-12-19 Frequency indicating and/or control systems

Publications (1)

Publication Number Publication Date
GB868994A true GB868994A (en) 1961-05-25

Family

ID=10418118

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4110058A Expired GB868994A (en) 1958-12-19 1958-12-19 Frequency indicating and/or control systems

Country Status (1)

Country Link
GB (1) GB868994A (en)

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