GB1215376A - Device for producing a pair of signals with phase displacement - Google Patents
Device for producing a pair of signals with phase displacementInfo
- Publication number
- GB1215376A GB1215376A GB0626/68A GB162668A GB1215376A GB 1215376 A GB1215376 A GB 1215376A GB 0626/68 A GB0626/68 A GB 0626/68A GB 162668 A GB162668 A GB 162668A GB 1215376 A GB1215376 A GB 1215376A
- Authority
- GB
- United Kingdom
- Prior art keywords
- train
- output
- pulses
- circuit
- pulse
- 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
- 238000006073 displacement reaction Methods 0.000 title 1
- 230000001360 synchronised effect Effects 0.000 abstract 2
- 239000000446 fuel Substances 0.000 abstract 1
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
-
- 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
- H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
-
- 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
- H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
- H03B19/06—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes
- H03B19/14—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes by means of a semiconductor device
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
1,215,376. Pulse shaping and phase changing Circuits. MOBIL OIL CORP. 11 Jan., 1968 [12 Jan., 1967], No. 1626/68. Heading H3T. [Also in Division H2] In a system for producing a pulse train displaced in phase from an input train, e.g. for driving a synchronous motor, the input train is converted to a train of double the frequency and half the width and edges of one polarity in the train are used to define the leading and trailing edges of the output train. As shown, pulses XI from block 34 are differentiated at 36 and the negative output removed at 38. They are also inverted at 42, differentiated at 44 and the negative pulses removed at 46 so that the output of the OR gate 40 is a double-frequency positive pulse train. These pulses each cause a storage element 48 to quickly charge and this is dissipated in a contsant current discharge circuit in 50 so that sawtooth waves are produced. These are applied to a Schmitt trigger 54 to convert the waves to a square wave train each pulse of which reverses the state of a divide-bytwo bi-stable circuit which therefore provides a square wave output displaced in phase by 90 degrees from the input from 34. The two trains are applied through 62 and 60 to a synchronous motor. As described the circuit is used to control the motor in dependence upon pulses received in a sensor 10 in the fuel injection line of a diesel engine. The output of the sensor is applied via a source follower 12 and an inverter 14 to a Schmitt trigger 18 via a threshold level setter 18. The output of the Schmitt circuit operates a mono-stable circuit 20 to ensure that closely spaced pulses appear as a single rectangular pulse. The resulting output is amplified and inverted at 22, differentiated at 24 and the negative pulses removed at 26. The remaining positive pulses cause a storage circuit 28 to rapidly charge and this charge is dissipated in a constant current circuit 28 to produce sawtooth waves. These waves are centered about a zero level in 32 and applied to a Schmitt trigger to provide the square wave XI referred to above. Conventional transistor circuits for use in the blocks are described with reference to Figs. 2, 3 and 4 (not shown) which respectively include the combinations of blocks as indicated in Fig. 1.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT32167A AT275675B (en) | 1967-01-12 | 1967-01-12 | Transistorized speed control arrangement for an induction motor with excitation windings fed by phase-shifted excitation square-wave voltages |
US62675567A | 1967-03-29 | 1967-03-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1215376A true GB1215376A (en) | 1970-12-09 |
Family
ID=25592311
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0626/68A Expired GB1215376A (en) | 1967-01-12 | 1968-01-11 | Device for producing a pair of signals with phase displacement |
Country Status (4)
Country | Link |
---|---|
US (1) | US3471763A (en) |
DE (1) | DE1638483A1 (en) |
FR (1) | FR1550792A (en) |
GB (1) | GB1215376A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014029413A1 (en) * | 2012-08-20 | 2014-02-27 | Telefonaktiebolaget L M Ericsson (Publ) | Device for frequency tripling |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1270247A (en) * | 1968-06-19 | 1972-04-12 | Dowty Rotol Ltd | Synchro-control systems |
US3932836A (en) * | 1974-01-14 | 1976-01-13 | Mobil Oil Corporation | DC/AC motor drive for a downhole acoustic transmitter in a logging-while-drilling system |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2863108A (en) * | 1956-03-15 | 1958-12-02 | Ibm | Motor drive circuit |
US3264541A (en) * | 1961-09-20 | 1966-08-02 | Compudyne Corp | Analog to digital pulse rate integrator and motor driven counter therefor |
US3356921A (en) * | 1964-04-24 | 1967-12-05 | Minnesota Mining & Mfg | Motor control circuit with compensation for dropout of control signals |
-
1967
- 1967-03-29 US US626755A patent/US3471763A/en not_active Expired - Lifetime
-
1968
- 1968-01-10 FR FR1550792D patent/FR1550792A/fr not_active Expired
- 1968-01-11 GB GB0626/68A patent/GB1215376A/en not_active Expired
- 1968-01-12 DE DE19681638483 patent/DE1638483A1/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014029413A1 (en) * | 2012-08-20 | 2014-02-27 | Telefonaktiebolaget L M Ericsson (Publ) | Device for frequency tripling |
Also Published As
Publication number | Publication date |
---|---|
FR1550792A (en) | 1968-12-20 |
US3471763A (en) | 1969-10-07 |
DE1638483A1 (en) | 1971-06-03 |
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