![]() When this pin is not used, it should be connected to ground through a 0.01 micro Farad to avoid any noise problem.The external voltage applied to this pin can also be used to modulate the output waveform.Thus either the external voltage or a pot connected to this pin determines the pulse width of the output waveform. The function of this terminal is to control the threshold and trigger levels.When this pin is not to be used for reset purpose, it should be connected to + VCC to avoid any possibility of false triggering. To disable or reset the timer a negative pulse is applied to this pin due to which it is referred to as reset terminal.supply pin is called the normally on load and that connected between pin 3 and ground pin is called the normally off load.The load connected between pin 3 and ground ![]() There are two ways in which a load can be connected to the output terminal either between pin 3 and ground pin (pin 1) or between pin 3 and supply pin (pin 8). Output of the timer is availĀable at this pin.The output of the timer depends on the amplitude of the external trigger pulse applied to this pin. This pin is an inverting input to a comparator that is responsible for transition of flip-flop from set to reset.All the voltages are measĀured with respect to this terminal.This IC consists of 23 transistors, 2 diodes and 16 resistors.The 555 Timer IC is available as an 8-pin metal can, an 8-pin mini DIP (dual-in-package) or a 14-pin DIP. It is an 8 pin dual-in-line package IC, operates with a supply voltage range of between 4.5 and 16V. This integrated circuit can be used to generate stable time delays like monostable multivibrator, or it may be used as on oscillator like an astable multivibrator. 555 Timer IC Pin Configuration M.S.P.V.L Polytechnic College, Pavoorchatram.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |