There are at least twelve simple experiments that can be performed with the IC 555 and at the same time learn the theory and digital logic behind its operation. Here you will find the first six experiments and the rest will be given in the second part of this article which follows immediately.
Although these circuits are experimental and non-conventional, they help to understand the IC which consists of a voltage divider, trigger comparator, threshold comparator, SR flip-flop, discharge transistor, reset transistor, and the output stage. It also helps to understand its three modes of operation: monostable, astable, and bistable.
All experiments are simple and can be done on a breadboard. A power supply of 5V to 9V DC can be used for all circuits (although, according to its data sheet 4.5V to 15V can be used). The operation of all twelve experiments is verified by flashing the LEDs.
This project will be published in a few weeks. If you want to access it now, check out Electronics For You’s December 2022 Issue–print or ezine edition.