@article{oai:ynu.repo.nii.ac.jp:00006820,
 author = {Ichiraku, Shigeo},
 issue = {1},
 journal = {Yokohama Mathematical Journal = 横濱市立大學紀要. D部門, 数学},
 month = {},
 note = {application/pdf, In this note we will show that Schmitt triggers, one consisting of an operational amplifier and one consisting of two transisitors, undergo the same type of bifurcation when inputs are considered as distinguished parameters and outputs as state variables. These are very simple and illustrative examples of the singularity theory applied for bifurcations developed by Golubitsky and Schaeffer ([1]). It is interesting that two apparently different circuits have the same mathematical principle corresponding to the function of the circuits. Furthermore, we can identify the unfolding parameters so that the possible local behaviors of the perturbed circuits are determined.},
 pages = {77--82},
 title = {ANALYSIS OF SCHMITT TRIGGERS},
 volume = {38},
 year = {1990}
}