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JRA Co
JRA, Co. is based out of Michigan and provides motion control products such as CNC servo packages, PC based servo controller cards, Galil compatible CNC software, WinGcnc breakout boards, motors and amplifiers, linear slide units, CNC machines and motion control IC's.
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- jraco.com
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in Motion Control ICs
JRA chips are high performance servo motor control ICs from National Semiconductor. They are designed to control brush dc servo motors with incremental encoder feedback. The LM628 features analog output, the LM629 supports PWM/SIGN output. Both chips are PID type controllers and communicate over an 8 bit data bus. The LM629N-8 is used in our Servo2 controller card. The IC’s provide complete control over position velocity and acceleration. Applications include CNC, robotics, pick and place and automation.