To operate a DC load incorporating the use of proximity sensor and timer

References

1. "Circuit Design: Know It All", edited by Darren Ashby
2. "Electrical Engineering: Principles and Applications", by Allan R. Hambley
3. "CMOS Digital Integrated Circuits: Analysis and Design", by Sung-Mo Kang and Yusuf Leblebici
4. "Analog Circuit Design: A Tutorial Guide to Applications and Solutions", by Bob Dobkin and Jim Williams
5. "Fundamentals of Electric Circuits", by Charles K. Alexander and Matthew N.O. Sadiku