Patents for H02P 7 - Arrangements for regulating or controlling the speed or torque of electric dc-motors (10,217)
08/1985
08/27/1985US4538096 Speed control circuit for a DC motor
08/21/1985EP0152339A1 Electric drive means for low tension of a rotating mass of high inertia and motor being part of such means
08/13/1985CA1191928A1 Dc motor control circuit
08/06/1985CA1191583A1 Motor control chopper apparatus phase angle limiting
08/06/1985CA1191542A1 Electrical machine with switches to change number of phases
08/06/1985CA1191386A1 Printer control system with error count averaging
07/1985
07/30/1985CA1191237A1 Dual voltage motor vehicle electrical system
07/23/1985US4531081 In an autopilot system for aircraft
07/18/1985WO1985003061A1 Reel tension controlling method and apparatus
07/17/1985EP0148467A1 Process and electronic device for the regulation of the current of an electric motor fed by a DC source with a fixed voltage
07/17/1985EP0148189A1 Mosfet "h" switch circuit for a dc motor
07/10/1985EP0147686A2 Speed control circuit for a direct current motor
07/09/1985US4528487 Electric car control system
07/03/1985EP0147280A1 Supply method and apparatus for a load, especially a direct-current motor for bi-current railway locomotive
07/02/1985US4527104 Speed control apparatus for d.c. motor
07/02/1985US4527103 Four state DC motor controller
07/02/1985CA1189901A1 Switching by means of rectifiers in electrical machines
06/1985
06/25/1985US4525658 Servomotor drive system
06/25/1985US4525049 Motor driving device of a camera
06/20/1985WO1985002727A1 A programmed microprocessor for a speed control system for a d.c. motor
06/18/1985US4524309 Safety control device of commutator motors
06/11/1985US4523134 Control system for DC motors
05/1985
05/28/1985US4520279 Series transistor chopper
05/23/1985WO1985002305A1 Series transistor chopper
05/22/1985EP0141828A1 Control circuit for a motor
05/21/1985US4518901 Motor control apparatus
05/14/1985US4517502 Load monitoring circuit for electric motors
05/07/1985US4516059 Motor control chopper apparatus phase angle limiting
05/07/1985US4516034 Circuit for operating a displaceable component in a motor vehicle, in particular a motor vehicle window
05/02/1985EP0029846B1 Digital velocity servo
04/1985
04/30/1985US4514670 Electric positioning motor control system, particularly automatic vehicle antenna extension system
04/30/1985US4514668 D.C. Motor driving circuit
04/30/1985US4514666 Pulse width modulation d.c. servo motor driving circuit
04/30/1985CA1186368A1 Method of controlling the speed of a d.c. motor and device for carrying out the method
04/24/1985EP0138157A1 Static leonard apparatus
04/23/1985US4513231 Control circuit of pulse width modulation inverter
04/17/1985EP0137249A2 Compensated ramp generating circuit for controlling SCR firing
04/17/1985EP0137248A2 Method and circuit for DC motor field regulation with speed feedback
04/16/1985US4511833 Stepping motor driving circuit
04/16/1985US4511831 Speed control of a D.C. electric motor
04/16/1985US4511829 Direct current control in inductive loads
04/16/1985US4511825 Electric wheelchair with improved control circuit
04/16/1985CA1185717A1 Elevator system
04/10/1985EP0027815B1 Traction-vehicle-propulsion-system having means for effecting electrical braking
04/09/1985US4510425 Control device for pump apparatus for vehicular use
04/09/1985US4510423 Motor apparatus
04/03/1985EP0135874A2 Control system for AC electric car
03/1985
03/26/1985US4507771 Motor drive apparatus
03/26/1985CA1184627A1 Valve actuators
03/19/1985US4506200 Method and apparatus for operating a d.c. motor
03/19/1985CA1184243A1 Electric motor speed controller and method
03/12/1985US4504881 Protective circuit for an electric motor
02/1985
02/26/1985CA1183200A1 Vehicle propulsion motor control apparatus
02/26/1985CA1183199A1 Propulsion motor control apparatus
02/19/1985US4500818 Dual motor proportioning control
02/12/1985US4499413 Method and apparatus for the control of synchronous motors
02/05/1985US4498035 Control circuit for linearly controlling the speed and direction of an AC powered DC motor in accordance with the magnitude and polarity of a DC reference signal
01/1985
01/31/1985WO1985000477A1 Controlled electric current supply unit
01/29/1985US4496888 Control system for a d.c. motor
01/29/1985US4496886 Three state driver for inductive loads
01/29/1985CA1181798A1 Control circuit for operating a direct current motor in the traction and braking modes
01/22/1985US4495401 Torch for gas-shield arc welding in deep narrow groove
01/22/1985CA1181480A1 Electric motor chopper control apparatus and method
01/17/1985WO1985000147A1 Apparatus for controlling forklift
01/16/1985EP0131489A1 Control device for a motor to open a pane of an automotive vehicle, particularly for an electric window opener
01/15/1985US4494181 Circuit arrangement for determining the polarity and magnitude of the load current in a reversible d-c controller or chopper
01/15/1985US4494059 Structure for and method of surface conditioning sensing and indicating and motor speed control
01/15/1985US4494057 Speed control system for small medical motors
01/15/1985US4494050 System for supression of underdamped oscillations in ac power drawn by synchronous motors driving Ward-Leonard generators
01/08/1985US4493015 Circuit arrangement for determining the load current in a reversible d-c controller or chopper
01/08/1985US4492912 Dual voltage motor vehicle electrical system
01/08/1985US4492905 Intermittent drive arrangement
01/01/1985US4491904 Chopper control apparatus
12/1984
12/27/1984EP0129319A2 Multiple-range speed control system for a compound motor
12/27/1984CA1180048A Motor control system
12/25/1984US4490657 Automatic torque taper circuit
12/25/1984US4490655 Bi-directional driver system for electrical load
12/18/1984US4489261 Method and means for feeding electric energy to a portable power tool
12/18/1984US4489258 Propulsion system for vehicles with a d-c machine
12/18/1984US4489257 Driving and braking system for electric motors
12/12/1984EP0128075A1 Control circuit for an opening panel, particularly for a window slider
12/12/1984EP0127896A2 Digitally controlled rectifying system for driving a motor
12/11/1984US4488096 Speed control for a rotary machine
12/11/1984US4488094 Linear integrated circuit for driving a d.c. motor with radio control
12/05/1984EP0126988A1 DC motor speed control circuit
12/04/1984US4486692 DC Motor control circuit for drop-out of stopping pulses in recorder
11/1984
11/27/1984CA1178656A1 Electronic speed regulator for a d.c. motor
11/22/1984WO1984004635A1 Mosfet "h" switch circuit for a dc motor
11/21/1984EP0125512A2 An anti-log power amplifier
11/20/1984US4484117 Microprocessor-based control apparatus for a direct current machine drive system
11/16/1984EP0113341A4 Windshield wiper control system.
11/14/1984EP0125100A1 Motor control
11/14/1984EP0124956A1 Power control for motor vehicle window
11/13/1984US4482850 Control circuit for DC capstan motor
11/13/1984US4482848 Controllable power source
11/13/1984CA1177878A1 Shunt field control apparatus and method
11/07/1984EP0123728A1 Circuit for monitoring electric motors
11/06/1984US4481452 Control circuit for electromagnetic devices
10/1984
10/31/1984EP0123085A2 Electronically switched power supply with transformer choke
10/30/1984US4480216 Motor driving circuits