Position: Index > Power Supply Circuit >

UPWARD_SCALING

2014-11-06 04:43  
Declaration:We aim to transmit more information by carrying articles . We will delete it soon, if we are involved in the problems of article content ,copyright or other problems.


UPWARD_SCALING
Output of AD580 threeterminal voltage regulator is multiplied in shunt regulator loop using opamp A,. Resulting reference voltage VEEF is scaled upward by reciprocal of feedback divider R1/R2. Resulting reference is immune to input variations. Reference output range is from 5 V up to voltage limit of opamp used. If desired, reference value can be programmed via R1. LED lights to show proper operation of circuit.-W. G. Jung, Programmable Voltage Reference is Stable, yet Simple, EDN Magazine, Nov. 5, 1975, p 98 and 100.