Mohit Khajuria

Mohit Khajuria

Mohit Khajuria is a SoC validation engineer working at Freescale Semiconductor, India. He holds a B.Tech degree from IIIT, Allahabad.

Stories by Mohit Khajuria

Oxygen Sensor Simulation Using A 555 Timer

In this article, the requirement of oxygen sensor in the automobiles is explained. We also discuss the principles of operation of an oxygen sensor in fulfilling its requirements. Oxygen sensor simulation is performed using a lab feasible and low cost circuit including a 555 Timer and level shifter logic in addition to testing the oxygen sensor in the lab. Simulation results of the sensor output and how the output is used to generate control signals to an Engine Control Unit (ECU) are also explained.