Vigennallack
Newbie level 2
Hello everyone!
I am trying to use the 4538 to produce a pulse.
It is used to filter a 32.768 kHz signal with an AND gate to create a certain number of pulses.
Unfortunately, the 4538 seems to have very poor precision.
The resulting numbers are very inconsistent, ranging from ~30-130 pulses.
An Arduino check with pulseIn() confirms this, giving pulse lengths from ~1300-3700 ms.
I know that a certain amount of variation would be caused by capacitor and resistor uncertainty but this seems a bit much.
Interestingly, sometimes the variation progresses almost sinusoidally.
Does anyone know what could be causing this?
Any help would be greatly appreciated!
I am trying to use the 4538 to produce a pulse.
It is used to filter a 32.768 kHz signal with an AND gate to create a certain number of pulses.
Unfortunately, the 4538 seems to have very poor precision.
The resulting numbers are very inconsistent, ranging from ~30-130 pulses.
An Arduino check with pulseIn() confirms this, giving pulse lengths from ~1300-3700 ms.
I know that a certain amount of variation would be caused by capacitor and resistor uncertainty but this seems a bit much.
Interestingly, sometimes the variation progresses almost sinusoidally.
Does anyone know what could be causing this?
Any help would be greatly appreciated!