555 Timer LED Flasher - Operating Modes of 555 Timer
Operating Modes of 555 Timer
The 555 Timer IC has basically three operating modes.
- Monostable Mode
- Astable Mode
- Bistable Mode
- In this mode, the IC generates only single pulse when the timer obtains a signal from the triggers input button.
- Period of the pulse depends upon the Resistor and Capacitor values.
- In this mode, the IC generates nonstop pulses with exact frequency depends on the values of the two Resistors and Capacitors.
In this mode, the IC generates two stable states :
The output signal of these two states are forbidden by a trigger and reset input pins, not by the charging and discharging of the capacitors.