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WO/1995/007572A1 |
Proposed is a device for controlling a power consumer in a vehicle. The device has at least two switching elements for controlling the current flowing through the consumer, the current flowing through each of the switching elements being...
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WO/1995/006974A1 |
In an embodiment, the invention provides a motor control system comprising an adjustable frequency driver (10) coupled between the motor (14) and a power supply (12), a programmable controller (16) coupled to the driver and operative to ...
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WO/1995/005704A1 |
A device for driving a power controlling element of a vehicle driving unit has a full bridge end stage and a direct current motor arranged in the bridge diagonal. The current through the direct current motor is limited to at least one pr...
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WO/1994/029943A1 |
A mini blind actuator has a motor and a housing (30) that holds the motor (60) and a dc battery (40). The rotor of the motor is coupled to the baton (22) of the mini-blind for rotating the baton and thereby opening or closing the slats o...
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WO/1994/027349A1 |
The proposal is for an electric motor drive with overload protection for the electric motor (10) which receives input (18) predetermining a reference position for a moving part. When the overload protection responds, the reference positi...
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WO/1994/022212A1 |
An obstruction detection apparatus (44) is provided for use in closing a power driven vent, such as a window, that is located in an opening. The vent includes a first closing edge that moves as the vent is closed and the opening includes...
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WO/1994/020890A1 |
A motor control system (10a) for controlling operation of a vehicle. The system monitors and stores data relating to the operating current and detects occurrences of abnormal loads applied to the vent by determining whether the monitored...
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WO/1994/016372A1 |
A low loss recirculation apparatus for recirculating current through an inductive load (101) includes an active recirculation circuit. The low loss recirculation apparatus includes a control device (201) with a drive output (203) that pr...
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WO/1994/014232A1 |
A converter for generating direct current with selectable polarity and voltage from two-phase alternating current or threephase current has at its input side a rectifier arrangement with a transformer (1) whose secondary side (1b) is des...
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WO/1994/014229A1 |
A circuit arrangement for automatic load current back regulation consists of a series circuit connected to a d.c. voltage source (U) and consisting of a load (2) and a first electronic switch (1) which is controlled by a driver (3) and w...
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WO/1994/005031A1 |
A free-wheeling safety switch (10) is intended for controlling a power supply (74) for a motor (76) and includes a linked single-throw conductor (14) and a double-throw conductor (40). A fusible link is located between the poles of the c...
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WO/1994/003968A1 |
During a blanking period from the actuation of the motor driving to a given time T, the motor current is not compared with its threshold value. During the latter stage Tm of the blanking period, a catching of anything in the window is de...
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WO/1994/003969A1 |
A drive circuit for a resonant reciprocating motor, particularly for driving compressors and the like. This circuit provides a drive signal with a substantially constant amplitude having a frequency of substantially the resonant frequenc...
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WO/1993/023920A1 |
A control circuit, in particular for a direct current motor control in positioning systems, has a differential circuit (1), control logic (2) and a full bridge (3) connected between a supply voltage V¿S? and a reference potential GND. T...
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WO/1993/019949A1 |
Optimal constructions for two motor/controller configurations (20) are disclosed. The controller structure includes an H-bridge (48) for controlling field current using synchronous-rectification of MOSFET (58, 60, 62, 64) devices, and a ...
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WO/1993/020611A2 |
A MOSFET (50, 51) control topology and a physical structure for a motor control which provide a more efficient and economic DC motor control are disclosed. The control topology introduces a synchronous-rectification technique wherein fre...
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WO/1993/019406A1 |
A control apparatus (10) controlling the operation of a pulse width modulator for an electric clutch (32) in portable spray painting equipment (13) having a pressure transducer (18) for sensing the pressure, a manually adjustable pressur...
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WO/1993/019458A1 |
An active attenuation system for a DC motor (11) which yields global vibration reduction of slot or other motor induced tonals at the plate on which the motor is mounted without modifying the construction of the motor. The system compris...
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WO/1993/014559A1 |
A pulse width modulation speed control for a d.c. motor (12). A control input (26) corresponding to a motorist setting or a sensed condition is coupled to pulse width modulation circuit (16) that generates a variable duty cycle signal. T...
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WO/1993/007675A1 |
A solid state DC power control circuit to efficiently use DC battery power without the normally associated energy waste which includes an input control signal, amplifying and conditioning circuit (133), a triangular waveform generator ci...
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WO/1993/006643A1 |
In an electrical device, an electricity consumer (2) is powered by a battery (B) via an electronic switch (21). To indicate the state of charge of the battery there is a display (9) and a timer (5) ascertains the period for which the con...
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WO/1993/005524A1 |
Two transistors provided in one arm of an H-bridge circuit for driving a rotary solenoid are prevented from burning by switching them on simultaneously. A CPU issues a first command signal, which commands the rotary solenoid to turn in t...
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WO/1993/003538A1 |
A solid-state motor power control (40) for portable paint pumps having a MOSFET power control device (50) operated from a solid-state electronic control circuit wherein the control circuit utilizes an operational amplifier (62, 68) to se...
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WO/1992/019038A1 |
The invention concerns the determination of machine-related electromagnetic and mechanical state variables on electrodynamic induction machines supplied via converters, such as asynchronous machines, synchronous machines and reluctance m...
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WO/1992/008267A1 |
Disclosed is a control circuit for a servomotor (M), the circuit using current pulses and supplying a current-controlled final stage (1). The growth in current is monitored, when the final stage (1) is driven, to detect a possible short-...
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WO/1992/008275A1 |
An impact load controller (28) compensates for the speed drop of a drive motor (12), which speed drop is caused by a load disturbance applied to the drive motor (12). A change in the dynamics of a speed controller (30, 34) in a speed reg...
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WO/1992/007421A1 |
The present invention proposes a process for controlling electric motors with independent excitation and pulse-length modulated drive in which the efficiency of the motor on parking is relatively high and the point of the deflection mano...
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WO/1992/006533A1 |
Motor (10) built for direct current with separate excitation fed with alternating current through a rectifying electronic circuit and having, in the input conductor (13) for direct current in the motor (10), a diode (15) associated to an...
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WO/1992/004666A1 |
A positioning control for linearly displacing an object (31) has a direct current motor (1) and a gear (2, 21) for converting rotary into linear motion, a current supply (4) of current pulses having given frequency, amplitude and duratio...
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WO/1991/014327A1 |
A circuit is disclosed for the separate potential transmission of pulses of any length and frequency for driving transistor circuits. The circuit has an additional demodulator unit (ZUMO) on the lower voltage side (KSS) and a magnetic, h...
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WO/1991/011052A1 |
A motor controller (10) for a single or multiphase induction motor (51) with control loop (59a, 59b, 59c) including auxiliary winding (61), capacitor (63) and saturable reactor (65). Auxiliary winding (61) is electro-magnetically coupled...
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WO/1991/009198A1 |
A drive device for movable components, e.g. window winders in motor vehicles, has a reversible electric motor (10) and a control device (16) for switching the motor (10) on in a predetermined direction of rotation of its rotor spindle (1...
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WO/1991/009461A1 |
A solid state DC power control circuit to efficiently use DC battery power without the normally associated energy waste which includes an input control signal filtering, amplifying, and conditioning circuit (133), a triangular waveform g...
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WO/1991/005402A1 |
A power controller (30) comprising a plurality of MOSFET transistor switches (Q5, Q6, Q13, Q14) adapted to control the current flow through a load such as a DC motor (M), gated charge pump circuits (32a, b) are provided to control the co...
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WO/1991/004607A1 |
A control system for a d.c. commutated motor (10) is arranged to move a driven element (11) along a predetermined path. The control system includes means (16) for deriving a control signal by producing an electrical signal proportional t...
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WO/1991/003870A1 |
A power supply control apparatus of an inductance load which makes power supply control such that a power supply current having a specified waveform is supplied to an armature coil during the high-speed revolution of a motor. Since a lar...
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WO/1990/013172A1 |
Disclosed is a control circuit in which a pulse width-modulated signal (3) actuates a changeover switch (4) whose output is switched between two d.c. voltages of different sizes (+U, -U) and gives, via a low-pass filter (5), an analog co...
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WO/1990/012446A1 |
A controller for an electric motor comprises a voltage controlled oscillator circuit (10) the output of which is transformed into a triangular waveform by a waveform generator (12). The output of the generator is applied to one input of ...
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WO/1990/010974A1 |
An actuator device for an electric window winder (101) comprising an electric motor (104) driving a recirculating ball worm screw unit for movement of a pre-compressed screw (112) for displacing the window, and comprising a specific elec...
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WO/1990/008996A2 |
In a preferred embodiment, a high-frequency, pulse-width-modulated, power-transistor, DC motor speed controller having current limiting in both drive and regenerative modes, essentially constant ramping rates regardless of whether or not...
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WO/1990/008423A1 |
A motor (30) and manual actuated switch (26) includes a motor control circuit (10) for controlling the motor to rotate in either a clockwise or counterclockwise direction to actuate a mechanical switch between the open circuit and short ...
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WO/1990/006403A1 |
A linkage system for loading machines is mounted on two lift-arms (14) supporting a pallet-lifting fork or a bucket (22) at the ends of the lift-arms. The linkage system is so designed that when using a bucket (22) or pallet-lifting fork...
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WO/1990/003689A1 |
A control device for a single-phase A.C. motor which has at least a first and a second coil coupled out of phase with each of the others, a lead connection, a first and a second coil connection for the first and second coil, respectively...
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WO/1990/002063A1 |
A drive, in particular for windscreen wiper systems in motor vehicles, has a d.c. motor (10) which can rotate at at least two different speeds and which has a collector (11), a first and a second brush (12, 13) which rest essentially dia...
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WO/1989/011816A1 |
A battery-operated surface treatment apparatus having a booster function, preferably a vacuum cleaner, comprises an electric motor (10) which drives a treatment unit, such as a suction fan. Further, the apparatus comprises a battery-powe...
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WO/1989/010030A1 |
There is disclosed an actuator device adapted to be in the form of a transponder for influence by a magnetic powering field, the device having an inductive means to receive a magnetic field to provide a signal to be rectified for supplyi...
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WO/1989/009511A1 |
A digital motor control system includes a flip-flop and latch (20, 24) for receiving motor circuit drive data from a microprocessor, a counter (34, 36) for counting to a predetermined value representing the total duration of a motor driv...
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WO/1989/008349A1 |
Two-state, bilateral, single-pole, double-throw, half-bridge power-switching apparatus capable of high speed, high current switching over a duty factor range of 0 % to 100 % includes a single-wire connector (104) to a source (101) of swi...
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WO/1989/002672A1 |
Apparatus for using an a.c. power supply to bidirectionally drive a d.c. motor includes a first silicon controlled rectifier (SCR) having a cathode connected to a terminal of the motor and an anode connected to a circuit common junction....
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WO/1989/000360A1 |
A programmable switching transistor circuit has at least one pair of semi-conductor devices (12, 14) of opposite types, e.g., pnp and npn types, interconnected with the gate terminal of the first device (12) connected to the anode termin...
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