luxuchenghu
New Member
We know we can easily build a square wave generator using 555 timer, my professor say, the frequency of it can hardly be higher than 1mhz. Who can tell the reason. Base on: f=1.44/(r1+2*r2)*c, I think any frequency is avaliable. Does it because we can hardly find the right r and c to build some too high or too low frequency or maybe it will be very unstable in the high frequency? So what is the frequency range we usually use 555 timer to generate? Can we use 555 to generate frequency below 20hz?
Thank you
Thank you