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  • Chemical Reactivity with Brush Materials
    This chart shows the chemical reactivity with brush materials.
  • Proper Motor Brush Selection When Brush Life is a Concern
    One of the most critical parts of this type of motor is the interface between the brushes and the commutator. Poor material selection and improper design considerations can affect both the life and the performance of an electric motor. This post briefly covers the factors which contribute to brush
  • Servo Control of a DC Brush Motor
    of the PIC17C42 as a DC brush motor servo controller. It is shown that a PID (Propor-tional, Integral, Differential) control calculation can be performed in less than 200 ms (@16 MHz) allowing control loop sample times in the 2 kHz range. Encoder rates up to 3 MHz are easily handled by the PIC17C42's
  • Post-CMP Polyvinyl Alcohol Brush Testing
    Polyvinyl alcohol (PVA) brushes are used in the semiconductor process during the post-CMP cleaning stage. Different PVA brush designs can affect wafer cleaning efficiency. Ensuring proper brush-to-wafer contact pressure and contact area is crucial in achieving clean and particle free wafers
  • The Effect of Spring Pressure on Carbon Brush Wear Rate
    A carbon brush may be defined as an electrical contact that carries current to or from a moving surface. It performs this electrical duty while operating within the restraints of a mechanical system. Unlike most other contacts, brushes require frequent replacement, making increased brush life
  • Cartridge Brush Design For DC Motors and Gearmotors
    The traditional method for mounting copper or silver graphite brushes in brush-commutated DC motor and gearmotor assemblies has been to solder the brushes onto standard cantilever springs to enable the required constant contact with the commutator. This conventional spring design, however, carries
  • Cartridge Brush Design for DC Motors and Gearmotors
    The traditional method for mounting copper or silver graphite brushes in brush-commutated DC motor and. gearmotor assemblies has been to solder the brushes onto standard cantilever springs to enable the required. constant contact with the commutator. This conventional spring design, however
  • Brush-DC Servomotor Implementation using PIC17C756A
    This application note demonstrates the use of a PIC17C756A microcontroller (MCU) in a brush-DC servomotor application. The PIC17CXXX family of micro-controllers makes an excellent choice for cost-effective embedded servomotor control applications. Some of the benefits of the PIC17CXXX MCU family

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