Published:2009/7/23 23:16:00 Author:Jessie | From:SeekIC
Nulling amplifier energizes control winding of servomotor for error-signal inputs of only few millivolts, using two voltage amplifiers, driver, and push-pull power output stage.-C. H. Smoot and F. J. Karlov, Boiler Control: Simple Controller for a Complex Job, Electronics, 37:18, p 88-93.
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