GB1134438A - An analogue converter and application thereof to regulation - Google Patents
An analogue converter and application thereof to regulationInfo
- Publication number
- GB1134438A GB1134438A GB50739/66A GB5073966A GB1134438A GB 1134438 A GB1134438 A GB 1134438A GB 50739/66 A GB50739/66 A GB 50739/66A GB 5073966 A GB5073966 A GB 5073966A GB 1134438 A GB1134438 A GB 1134438A
- Authority
- GB
- United Kingdom
- Prior art keywords
- capacitor
- conducts
- transistor
- cycle
- frequency
- 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
- H03K—PULSE TECHNIQUE
- H03K9/00—Demodulating pulses which have been modulated with a continuously-variable signal
- H03K9/06—Demodulating pulses which have been modulated with a continuously-variable signal of frequency- or rate-modulated pulses
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
- G06G7/04—Input or output devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/16—Controlling the angular speed of one shaft
Abstract
1,134,438. Frequency discriminators. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. 11 Nov., 1966 [12 Nov., 1965], No. 50739/66. Heading H3A. A pair of circuits as shown in Fig. 1 produce output square waves in anti-phase and of amplitude proportional to the period of an input signal (i.e. inversely proportional to the frequency), the two square waves being combined to provide a D.C. output voltage. For the first quarter-cycle of an input signal (0 to T/2, Fig. 2, not shown), transistor 6 conducts and discharges capacitor 1; in the next quarter-cycle (T/2 to T) the capacitor 1 charges through diode 4 from a constant current source, which may be a high resistance, to a potential proportional to the charging time; in the next half-cycle transistor 5 conducts to prevent further charging of the capacitor 1, and transistor 7 conducts to connect the constant potential on capacitor 1 to an output terminal 8. The switching signals applied to terminals 9-11 are derived from an input square-wave signal X (Figs. 7 and 8, not shown), and its inverse #X and from derived signals Y and #Y of half the frequency by means of an AND circuit (17, Fig. 7) and an OR circuit (19). The signals supplied are Y + X Y to terminals 9, #X#Y to terminal 10, and Y to terminal 11, and the corresponding anti-phase signals to the anti-phase unit corresponding to Fig. 1.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR38211A FR1468911A (en) | 1965-11-12 | 1965-11-12 | Analog converter and its application to regulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1134438A true GB1134438A (en) | 1968-11-20 |
Family
ID=8592384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB50739/66A Expired GB1134438A (en) | 1965-11-12 | 1966-11-11 | An analogue converter and application thereof to regulation |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1468911A (en) |
| GB (1) | GB1134438A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2437732A1 (en) * | 1978-09-29 | 1980-04-25 | Thomson Csf | FREQUENCY DEMODULATION DEVICE AND RECEIVER COMPRISING SUCH A DEVICE |
-
1965
- 1965-11-12 FR FR38211A patent/FR1468911A/en not_active Expired
-
1966
- 1966-11-11 GB GB50739/66A patent/GB1134438A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1468911A (en) | 1967-02-10 |
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