Adjusting W317 stabilizer from zero

Published:2011/6/15 23:19:00 Author:Borg | Keyword: stabilizer | From:SeekIC

One of the differences between this circuit and W317 basic application circuit is that there is a team of passive voltage affiliated power supply in the circuit. The voltage on the stabilizer pipe DW positive pole to the earth is -1.25v, the lower terminal of the voltage adjusting potentiometer is not connected with the earth but with the positive pole of the pipe, the output voltage of the stable power supply is still got from the part between the output pole and earth of the 3-terminal stabilizer. So when the resistance of W is regulated to 0, the 1.25v voltage on R1 offsets the -1.25v voltage on DW, which makes the output voltage be 0v.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Power_Supply_Circuit/Adjusting_W317_stabilizer_from_zero.html

Print this Page | Comments | Reading(3)