Schematics for 555 timer circuits are helpful in building over 45 circuits and other electronic projects. They are a good reference for learning and understanding basic timer circuits.
The 555 timer circuits operates from a broad range of power supplies ranging from +5 Volts to +18 Volts supply voltage. The schematics cover areas such as pin configuration, block diagram and working principles. They also cover the basics of 555 timer circuits that combine two comparators, a relaxation oscillator, a discharge capacitor and an R-S flip-flop. A 555 timer circuit plan also highlights the timing concept, which is important in the design of the circuit.