GB1358494A - Washing machine control circuit - Google Patents
Washing machine control circuitInfo
- Publication number
- GB1358494A GB1358494A GB3077772A GB3077772A GB1358494A GB 1358494 A GB1358494 A GB 1358494A GB 3077772 A GB3077772 A GB 3077772A GB 3077772 A GB3077772 A GB 3077772A GB 1358494 A GB1358494 A GB 1358494A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motor
- triac
- current
- transistor
- cycle
- 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
- 238000005406 washing Methods 0.000 title abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 3
- 239000003990 capacitor Substances 0.000 abstract 2
- 238000010304 firing Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
Classifications
-
- 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
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/10—Commutator motors, e.g. repulsion motors
-
- 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
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
- H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
- H02P7/292—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using static converters, e.g. AC to DC
- H02P7/295—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using static converters, e.g. AC to DC of the kind having one thyristor or the like in series with the power supply and the motor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S388/00—Electricity: motor control systems
- Y10S388/907—Specific control circuit element or device
- Y10S388/917—Thyristor or scr
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S388/00—Electricity: motor control systems
- Y10S388/923—Specific feedback condition or device
- Y10S388/934—Thermal condition
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
- Control Of Multiple Motors (AREA)
- Rectifiers (AREA)
Abstract
1358494 Control of D.C. motors PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 30 June 1972 [3 July 1971] 30777/72 Heading H2J [Also in Division G3] A washing machine control circuit generally similar to that described in Specification 1,195,179 is provided with means to make the power supplied to the heating resistor 2 independent of the operating condition of the D.C. motor 1, this means comprising a triac 7 in parallel with the motor 1 and a triac 3 (or thyristor if only one direction of motor rotation is required) and a control circuit 8 for the triacs. In operation the triac 3 is fired at the zero point of each supply half-cycle of the appropriate polarity, so that current flows through the members 1, 2 until the triac 7 is fired at a subsequent point in the half-cycle, the motor current thereafter declining and the resistor current increasing. According to the amount of heating power required, the triac 7 may be fired prior to the start or during the following half-cycle or may remain non-conductive during this half-cycle. Typical waveforms of the current through the resistor, motor and triac 7 are described, Fig. 4 (not shown), the triac 7 being fired at its instant of current zero. With the motor stationary the heating current is controlled by the firing of triac 7 alone. In a modification, Fig. 3 (not shown), the triac 3 is replaced by a pair of anti-parallel connected diodes (3, 3<SP>1</SP>) selectible by a change-over switch (9) according to the direction of motor rotation required. Fig. 5 shows the circuit diagram of the control circuit 8 applied to the embodiment of Fig. 2 (block M). A trigger circuit TR derives a square-wave voltage from the A.C. supply 6, 6<SP>1</SP> and applies it to the base of a transistor Tr 4 in a circuit D having transistors Tr 6 , Tr 7 controlling the gates of triacs 3, 7 in response to the voltage at Tr 4 . Speed stabilization of the motor is effected by a signal derived from a circuit S including tachogenerator G and members L, D 1 , C 1 , R 1 , R 2 , R 3 , this signal being applied to the base of a transistor Tr 1 to determine its collector current and hence the charging time of a capacitor C 2 which controls the transistor Tr 7 and hence the firing instant of the triac 7. Alternatively the motor back EMF may be used as the speed indicative signal. The cycle of running and stopping of the motor and its direction of rotation is determined by an astable multivibrator A controlling trigger circuit TR via a bi-stable multivibrator B, an inverter Tr 14 , Tr 15 providing interchange of the cycle periods of multivibrator A. Capacitors C 2 , C 3 limit the durations of the trigger pulses to prevent short circuiting of the motor by simultaneous conduction of the triacs 3, 7 with consequent reversal of motor current causing it to stop. Transistors Tr 8 and Tr 9 determine respectively the condition of the motor (running or stopped) and the method of supplying the resistor 2 (through the motor or the triac 7). Maximum or minimum power to the resistor 2 during the "motor stopped" condition is determined by the presence or absence of a voltage at terminal Q controlling a transistor Tr 10 , which condition corresponds to the connection of the input of the multivibrator A to transistor Tr 8 and to a transistor Tr 11 .
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7109226A NL7109226A (en) | 1971-07-03 | 1971-07-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1358494A true GB1358494A (en) | 1974-07-03 |
Family
ID=19813550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3077772A Expired GB1358494A (en) | 1971-07-03 | 1972-06-30 | Washing machine control circuit |
Country Status (8)
Country | Link |
---|---|
US (1) | US3764822A (en) |
CA (1) | CA954615A (en) |
DE (1) | DE2232041A1 (en) |
ES (1) | ES404450A1 (en) |
FR (1) | FR2144747A1 (en) |
GB (1) | GB1358494A (en) |
IT (1) | IT958656B (en) |
NL (1) | NL7109226A (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4042865A (en) * | 1973-03-08 | 1977-08-16 | Sevcon Limited | Separately excited D.C. motors |
NL7908245A (en) * | 1979-11-12 | 1981-06-01 | Philips Nv | Device for pulsed excitation of an electric motor. |
DE3411045A1 (en) * | 1984-03-26 | 1985-09-26 | Conrad Engelke GmbH & Co KG, 3000 Hannover | Drive for a washing and spin-drying machine for washing duvets |
US5857609A (en) * | 1994-08-08 | 1999-01-12 | Cooper Industries, Inc. | Portable electric desoldering tool |
WO1998019388A2 (en) * | 1996-10-28 | 1998-05-07 | Philips Electronics N.V. | Speed control for the fan motor of a hot-air appliance |
US6337523B1 (en) | 2000-02-10 | 2002-01-08 | Troy Video Recording Services, Inc. | Automated operation of silicon controlled rectifier switches using sensors such as Schmitt devices |
US7397225B2 (en) * | 2002-08-14 | 2008-07-08 | Gerhard Kurz | Apparatus for controlling the power of an AC voltage supplying an electrical consumer by phase control and method for reducing harmonics |
DE10357918B3 (en) * | 2003-12-11 | 2005-03-17 | Kurz, Gerhard | Phase-chopping power regulator for electric motor has semiconductor switch in series with latter and second semiconductor switch connected in series with resistance element across first semiconductor switch |
MX2007015387A (en) * | 2005-06-06 | 2008-02-19 | Lutron Electronics Co | Method and apparatus for quiet variable motor speed control. |
US7489094B2 (en) * | 2005-11-18 | 2009-02-10 | Lutron Electronics Co., Inc. | Method and apparatus for quiet fan speed control |
TW200938253A (en) * | 2007-08-31 | 2009-09-16 | Panasonic Elec Works Co Ltd | Rocking type exercising apparatus |
WO2011076827A2 (en) * | 2009-12-23 | 2011-06-30 | Robert Bosch Gmbh | Braking device for a universal motor |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL6807615A (en) * | 1968-05-30 | 1969-12-02 |
-
1971
- 1971-07-03 NL NL7109226A patent/NL7109226A/xx unknown
-
1972
- 1972-06-29 CA CA145,996A patent/CA954615A/en not_active Expired
- 1972-06-29 US US3764822D patent/US3764822A/en not_active Expired - Lifetime
- 1972-06-30 GB GB3077772A patent/GB1358494A/en not_active Expired
- 1972-06-30 DE DE2232041A patent/DE2232041A1/en active Pending
- 1972-06-30 IT IT5126672A patent/IT958656B/en active
- 1972-07-01 ES ES404450A patent/ES404450A1/en not_active Expired
- 1972-07-03 FR FR7224012A patent/FR2144747A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
FR2144747A1 (en) | 1973-02-16 |
IT958656B (en) | 1973-10-30 |
US3764822A (en) | 1973-10-09 |
CA954615A (en) | 1974-09-10 |
ES404450A1 (en) | 1975-06-16 |
NL7109226A (en) | 1973-01-05 |
DE2232041A1 (en) | 1973-01-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3344328A (en) | Direct current motor plugging circuit | |
GB1358494A (en) | Washing machine control circuit | |
GB1500319A (en) | Apparatus for re-transferring power from mechanically driven and/or electrically braked motors of a spinning machin | |
ES367825A1 (en) | System for controlling the speed of a plurality of motors which have output shafts to drive elements that are interrelated | |
GB1291333A (en) | Control apparatus for a.d.c. brushless motor | |
GB1422161A (en) | Static switching system for interconnecting two dc series excited machines | |
US3894277A (en) | Control device for the commutatorless motor | |
GB1484296A (en) | Electromotive drive for an automatic washing machine | |
GB1379040A (en) | Control circuits for dc electric rotating machines | |
US3518434A (en) | X-ray tube rotatable anode control circuit with means to sense and control anode motor current | |
US3795848A (en) | Collectorless d. c. motor | |
GB1354845A (en) | Control or regulating equipment for an electric motor | |
GB1404019A (en) | Control system for adjusting speed of ac motor | |
US3493834A (en) | Motor speed control apparatus | |
GB1493578A (en) | Electronic controls | |
US3539893A (en) | Hybrid motor control circuit for providing improved speed regulation | |
US3329879A (en) | Controlled rectifier supply for electric motors having negatively sloped armature speed voltages | |
US3441826A (en) | Tachometer feedback circuit for d.c. motor speed control | |
GB1107938A (en) | Improvements in or relating to laundry machines | |
US3541412A (en) | Control for alternating-current motors | |
GB1502067A (en) | Electric motor overload protection | |
GB1415656A (en) | Method and apparatus for supplying power to a load | |
GB1359194A (en) | Device for speed regulation of direct current motors supplied from ac mains | |
US3743903A (en) | Single phase motor reversing starter | |
GB1136620A (en) | Apparatus for supplying electric current from an a.c. supply to a load at a low frequency |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |