In the classic configuration and most variants of the astable 555 multivibrator circuit, the timing characteristics are based on the charging and discharging of a capacitor. However, it can be argued ...

555 as Astable Operation If the circuit is connected as shown in figure below (pins 2 and 6 connected (shot)) it will trigger itself and free run as a multivibrator.

The popular Timer IC 555 is extensively used in short duration timing applications. IC 555 is a highly stable integrated circuit functioning as an accurate time delay generator and free running ...