Hello to all,
I've built this Led event counter using 74ls47 and 74ls90 from this site...
https://www.electronics-lab.com/projects/misc/012/index.html
it works fine by itself, ...but whenever I integrate this counter to another circuit using a DPDT relay controlling the On and off Function of an AC induction motor, the counter leds gives a false reading every time the control relay cycles to swicth On and Off.
I integrated the counter circuit to monitor how many times the induction motor (contolling a water pump for a reservoir) had run for a given day. But as I said everytime the pressure switch or the relay energizes...it gives a false reading or sometimes the counter resets to Zero. The counter works fine only if there are no relays to activate.
Please need help, Thanks,
inrei
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I've built this Led event counter using 74ls47 and 74ls90 from this site...
https://www.electronics-lab.com/projects/misc/012/index.html
it works fine by itself, ...but whenever I integrate this counter to another circuit using a DPDT relay controlling the On and off Function of an AC induction motor, the counter leds gives a false reading every time the control relay cycles to swicth On and Off.
I integrated the counter circuit to monitor how many times the induction motor (contolling a water pump for a reservoir) had run for a given day. But as I said everytime the pressure switch or the relay energizes...it gives a false reading or sometimes the counter resets to Zero. The counter works fine only if there are no relays to activate.
Please need help, Thanks,
inrei
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