Re: 555 50% duty cycle

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Fucian-at-aol-dot-com>

In a message dated 12/21/01 10:09:47 PM Eastern Standard Time, 
tesla-at-pupman-dot-com writes:

<< Hi Matt,
 
 "ln" is a "natural logarithm function".  Window's calculator has it above
 "log" in the scientific mode as "ln".
 
 Radio Shack has the CMOS version #276-1718 for $1.49.  With the CMOS
 version the frequency is just 0.71/RC.
 
 Cheers,
 
    Terry
 
  >>
Oh ok, I see now.But these still use 2 diferent resistors.The one at your 
site on your tesla coil tuner uses 1 and a pot.How can i modify that to work 
up to 500khtz?Could I still use a LM555?I ask because I just got 10 of them 
for this purpose:-))

Thanks,
Matt