1. https://coeosmanabad.ac.in/wp-content/uploads/2020/03/TE-ETC-PE-LAB-MANUAL-2017-18.pdf
2. https://coeosmanabad.ac.in/wp-content/uploads/2020/03/TE-ETC-PE-LAB-MANUAL-2017-18.pdf
3. https://hsit.ac.in/dept-doc/EE/lab-manual/15EEL58-PE-LAB-MANUAL.pdf
4. https://en.wikipedia.org/wiki/TRIAC