Venable Hall, CB 3290, University of North Carolina, Chapel Hill, NC (since retired) Email address: JPete68620@aol.com
3 results found for John Peterson, displaying items 1 - 3
October 2, 2008[Ideas For Design] Bidirectional H-Bridge DC-Motor Motion Controller: Backstory
IN APPLICATIONS REQUIRING ABSOLUTE accuracy in the speed control of dc servo motors, there’s no substitute for the traditional tachometerbased feedback loop. But for somewhat less demanding situations, adequate accuracy often can be achieved without the complication and expense of a tach. This can be done by taking advantage of the built-in electromechanical constants of the motor itself. For example,...
May 30, 1994
[Ideas For Design] RMS Converter Has Excellent CMR
Designs for rms converters are common, particularly the single-chip monolithic solutions. This circuit (see the figure), however, differs from the others because of its versatile instrumentation-amplifier-type differential inputs that feature excellent common-mode rejection (CMR). In addition, the circuit is built with inexpensive, generic components. The first step in input-signal processing is the differential-input absolute-value...
