GB802693A - Improvements in pulse frequency measuring apparatus - Google Patents
Improvements in pulse frequency measuring apparatusInfo
- Publication number
- GB802693A GB802693A GB3633755A GB3633755A GB802693A GB 802693 A GB802693 A GB 802693A GB 3633755 A GB3633755 A GB 3633755A GB 3633755 A GB3633755 A GB 3633755A GB 802693 A GB802693 A GB 802693A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulses
- chain
- frequency dividers
- flop
- fed
- 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
- 239000007788 liquid Substances 0.000 abstract 2
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
- G01R23/10—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into a train of pulses, which are then counted, i.e. converting the signal into a square wave
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
802,693. Frequency measuring apparatus. HOBSON, Ltd., H. M., and FELLOWS, H. Oct. 22, 1956 [Dec. 19, 1955], No. 36337/55. Class 40 (1). In apparatus for measuring the rate of generation of electrical pulses, the pulses are fed to a chain of frequency dividers and a selector switch enables a ratemeter to be connected to any desired divider of the chain. As shown, a liquid flowmeter of the kind described in Specification 752,496 comprises a rotor 1 in a conduit 2 which rotates at a speed proportional to the rate of flow of the liquid and which has in one or more of its vanes a magnet 3 arranged to pass close to a solenoid 4, the pulses produced therein being amplified at 5 and fed to a shaper 6 comprising a monostable flip-flop and associated differentiating circuit, the output of which, consisting of pulses of short duration, is passed, via a chain of four binary frequency dividers 7<SP>1</SP>-7<SP>4</SP> of the Eccles Jordan type, to the driver 9 of a counter 8, and a monostable flip-flop 11 with meter 12 in the anode circuit of its normally cut-off section, as described in Specification 798,507, is connected via a four-position switch 10 to the output of any one of the frequency dividers 7<SP>1</SP>-7<SP>4</SP>. Reference has been directed by the Comptroller to Specification 752,496.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3633755A GB802693A (en) | 1955-12-19 | 1955-12-19 | Improvements in pulse frequency measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3633755A GB802693A (en) | 1955-12-19 | 1955-12-19 | Improvements in pulse frequency measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB802693A true GB802693A (en) | 1958-10-08 |
Family
ID=10387223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3633755A Expired GB802693A (en) | 1955-12-19 | 1955-12-19 | Improvements in pulse frequency measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB802693A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3638113A (en) * | 1970-03-04 | 1972-01-25 | Robert M Glorioso | Electronic frequency-tuning mechanism |
-
1955
- 1955-12-19 GB GB3633755A patent/GB802693A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3638113A (en) * | 1970-03-04 | 1972-01-25 | Robert M Glorioso | Electronic frequency-tuning mechanism |
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