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Math Functions: Square Root Circuits

Circuit takes square Root of Input Voltage: 11/20/97 EDN-Design Ideas 

Square Root Function Improves Thermostat: 9/30/99 EDN-Design Ideas  / Perhaps the most elementary rule of control-loop design theory is that feedback-loop performance is fundamentally linked to the careful choice—and stability—of loop gain. Insufficient loop gain leads to poor set point accuracy. Too much gain can induce feedback instabilities, such as overshoot, ringing, and, ultimately, oscillation. Therefore, the greater the accuracy you expect from a control system, the more critical maintaining near-optimal loop gain becomes.


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