C
captoro
- Jan 1, 1970
- 0
Hello,
I'm on a quest here.
I am trying to find a circuit with a 555 timer that can both independently control the frequency and duty cycle(1% to 99%).
Most circuit I find is either or, A few was actually what I thought i needed but when completing the circuit, I found that when varying the frequency.. the duty cycle was also changing !! or vice versa.
I know with a LM393, (and I have that circuit) it is possible. but it is not fast enough. I can see on the scope that the 555 pulse starts to deteriorates 2.5us while the lm393 starts about at 100us
thanks for the help
ken
I'm on a quest here.
I am trying to find a circuit with a 555 timer that can both independently control the frequency and duty cycle(1% to 99%).
Most circuit I find is either or, A few was actually what I thought i needed but when completing the circuit, I found that when varying the frequency.. the duty cycle was also changing !! or vice versa.
I know with a LM393, (and I have that circuit) it is possible. but it is not fast enough. I can see on the scope that the 555 pulse starts to deteriorates 2.5us while the lm393 starts about at 100us
thanks for the help
ken