555 Timer

[smokie]

What happens to the output voltage when the 555 timer supplies higher
current? how good is the program multisim? Would it be worth the
investment?

 

[Chris]

smokie wrote:

What happens to the output voltage when the 555 timer supplies higher
current? how good is the program multisim? Would it be worth the
investment?

Hi, smokie. As current sourced or sunk through the output transistors
of the 555 increases, more voltage is dropped across those transistors.
Look at page 5 of the datasheet for graphs of output voltage vs.
output current:

http://www.national.com/pf/LM/LM555.html#Datasheet

It's usually a good idea to look at the datasheet.

Newbies in electronics need some background and basic knowledge before
they can make good use of simulation programs. You might be better off
downloading LTSpice as mentioned in another post, then taking the money
and enrolling in a summer course at the local junior college.

Good luck
Chris