MDC servo amplifiers for brush-type motors up to 850 oz-inches are MOSFET, pulse-width-modulated, providing four-quadrant control in torque, velocity, and voltage modes. MDC servo amplifiers are available in two voltage ranges, 21 to 80V dc and 40 to 180V dc, and in two current ranges, 6 and 12A. Additionally, an onboard 5V dc 250 mA supply powers an encoder. Measuring 4.43 X 7.3 X 1.6 inches, these inaudible 20 kHz switching amplifiers are available in custom performance ranges and packaging.
Motion Science, 2600 Liberty Ave., Pittsburgh, PA 15222, FAX (412) 261-8609.
An in-depth survey of 700 current and future users of 3D printing holds few surprises, but results emphasize some major trends already in progress. Two standouts are the big growth in end-use parts and metal additive manufacturing (AM) most respondents expect.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.