Wijesundera, L.B.D.R.P.2016-06-232016-06-232015Wijesundera, L.B.D.R.P. 2015. Lesson 13: Voltage comparator and its application as controller, In: Practical Manual for GCE A/L Biosystem Technology Teachers. Ministry of Education and University of Kelaniya, Sri Lanka. 77-82 pp.978-955-4563-50-6http://repository.kln.ac.lk/handle/123456789/13653enLearning Object