GB1332292A - Arrangements for altering the frequency of an electrical signal - Google Patents
Arrangements for altering the frequency of an electrical signalInfo
- Publication number
- GB1332292A GB1332292A GB1332292DA GB1332292A GB 1332292 A GB1332292 A GB 1332292A GB 1332292D A GB1332292D A GB 1332292DA GB 1332292 A GB1332292 A GB 1332292A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frequency
- pulse
- frequencies
- stable
- output
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B21/00—Generation of oscillations by combining unmodulated signals of different frequencies
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/02—Compensating or correcting for variations in pressure, density or temperature
- G01F15/022—Compensating or correcting for variations in pressure, density or temperature using electrical means
- G01F15/024—Compensating or correcting for variations in pressure, density or temperature using electrical means involving digital counting
Abstract
1332292 Pulse frequency changing KENT INSTRUMENTS Ltd 7 Oct 1970 [10 July 1969] 34784/69 Heading H3P The frequency of an input pulse signal on line 6, 20 is increased by adding to it in an OR gate 16, pulses derived from a bi-stable 2 having a frequency equal to the lesser of the signal and pulse train frequencies. A multivibrator 10 produces a pulse train at a frequency set by a variable resistor 12, and the bi-stable 2 is set by pulses from the train and reset by the input signal pulses at 6. The bi-stable output therefore has a frequency equal to the lesser of its two input frequencies, and this output is delayed by a monostable 14 and applied to the OR gate 16 together with the input signal at 20, to produce at 22 an addition of the two frequencies. The arrangement is used to linearize the output (Fig. 3, not shown) of an electric pulse flowmeter, adjustment of the multivibrator 10 frequency at 12 giving different characteristic curves (Fig. 2, not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3478469 | 1969-07-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1332292A true GB1332292A (en) | 1973-10-03 |
Family
ID=10369913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1332292D Expired GB1332292A (en) | 1969-07-10 | 1969-07-10 | Arrangements for altering the frequency of an electrical signal |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1332292A (en) |
-
1969
- 1969-07-10 GB GB1332292D patent/GB1332292A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |