Direct current motor with transistorized power supply

• US 3,290,572 A
• Filed: 07/06/1964
• Issued: 12/06/1966
• Est. Priority Date: 07/05/1963
• Status: Expired due to Term

• Current Assignee: Helmut Moczala, Julian Hartmann
• Original Assignee: Helmut Moczala, Julian Hartmann
• Inventors: Hartmann, Julian, HELMUT MOCZALA
• Application Number:
  US04/380,266
• Time in Patent Office: 883 Days
• US Class Current: 318/400.37
• CPC Class Codes: H02K 29/12 using detecting coils using the machine windings as detecting coil
• CPC Class Codes: H02P 6/06 Arrangements for speed regulation of a single motor wherein the motor speed is measured and compared with a given physical value so as to adjust the motor speed
• CPC Class Codes: H02P 6/08 Arrangements for controlling the speed or torque of a single motor H02P6/10, H02P6/28 take precedence
• CPC Class Codes: H02P 6/10 Arrangements for controlling torque ripple, e.g. providing reduced torque ripple

Claims

1. IN A D.C. MOTOR HAVING A STATOR AND A ROTOR, THE COMBINATION WHICH COMPRISES:

MEANS FORMING ARMATURE WINDINGS;

A POWER SUPPLY HAVING ARMATURE TRANSISTORS CONNECTED TO SAID WINDINGS;

A CONTROL CIRCUIT CONNECTED TO SAID ARMATURE TRANSISTORS FOR CONTROLLING THE SAME IN DEPENDENCE ON THE RELATIVE ANGULAR POSITION BETWEEN THE STATOR AND ROTOR, SAID CONTROL CIRCUIT BEING AN OSCILLATORY CIRCUIT INCORPORATING A CONTROL TRANSISTOR;

MEANS FOR PRODUCING A PERMANENT MAGNETIC MOTOR FIELD WHICH ROTATES WITH THE ROTOR;

AND SPEED REGULATING MEANS CONNECTED TO SAID CONTROL CIRCUIT FOR APPLYING THERETO A TACHOMETER POTENTIAL, WHICH IS GENERATED BY THE INDUCTOR ACTION OF SAID MAGNETIC MOTOR FIELD, WHICH POTENTIAL RENDERS SAID CONTROL CIRCUIT INEFFECTIVE AT A GIVEN PREDETERMINED ROTATIONAL CIRCUIT INEFFECTIVE AT A GIVEN PREDETERMINED ROTATIONAL SPEED BY INTERRUPTING THE FEEDING OF POWER TO SAID ARMATURE WINDINGS.