need help about 555 timer..

Thread Starter


Joined Nov 28, 2014
555 monostable.jpg Hi, I want to design adjustable timer for my application..I am using a 555 timer for that purpose.can a 555 timer drives the relay directly if i connect the 555 in monostable mode and relay at the ouput of the 3rd pin of 555..


Joined Aug 21, 2008
version of 555 means?
Not all '555's are of the same design. Some might be more sensitive to this reverse current flow than others. As I recall, the original intersil application booklet indicated that this diode is a good idea for their (original) version of the NE555.