Re: 555 Timer

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?


My guess is that the only effect that drawing more current from the output of a 555 will have is that it'll heat it up. However, the timing will probably not be affected; the timing is based on a comparison between a three-way internal resistive divider, and the trigger and threshold inputs. That won't change much when the thing heats up.

As to the simulator, I'd try LTSpice first, from www.linear.com. It's free.

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Regards,
 Bob Monsen
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