yes, this pattern is absolutely true. unfortunately I use the clock from the ic 555, because I have printed the pcb, but thanks for the answerView attachment 173711
Is that the pattern you are looking for ?
If interested I can post the project so you can open mBlock and look at it.
I set this for .5 sec LED to LED time. This of course is low current LEDs so I
can drive directly with Nano board. You would add the MOSFETS and R's
associated wit them to do your high current design.
Here is the block code that did the design -
View attachment 173712
Regards, Dana.
Yes, I haven't done the analysis using an oscilloscope, because I don't have one,There is even the questions are there any glitches on output of
555 timer clocking the 595. And if you attempt to slow down the
Tr and Tf into the 595 clock, that exposes it to noise related triggering,
an example below.
This sim is a ramp into simple CMOS input with 100 mV of noise on it.
Logic circuits do not like this, produces unstable states and switching.
So be careful about slowing down rise time on clock signals and inputs
in general.
View attachment 173708
Put your scope on infinite persistence, and look at power supply rails, clock inputs, to get an idea
of how much noise you have in system.
Not all caps, for equal capacitance, have the same ESR performance. Polymer Tants and ceramics,
combos of both, best in class. The Sanyo OS-CON is polymer technology. Many manufacturers now.
Regarding choice of regulator, keep in back of your mind to read carefully
output bypassing constraints. Some LDO regulators (your is not one of them),
have limits on output allowed min ESR. This is just a caution for future work.
Regards, Dana.
Not a problem, example done to show you alternative ways of getting loweryes, this pattern is absolutely true. unfortunately I use the clock from the ic 555, because I have printed the pcb, but thanks for the answer
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