GB868994A - Frequency indicating and/or control systems - Google Patents
Frequency indicating and/or control systemsInfo
- 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
Links
Landscapes
- Control Of Eletrric Generators (AREA)
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).
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) |
-
1958
- 1958-12-19 GB GB4110058A patent/GB868994A/en not_active Expired
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