Hi All

I need an idea for a circuit to check if a fixed time period (>2 sec) as
passed.
the circuit I am checking is a 12vdc pump if it working more than 2 sec then
I need a high or low signal to start a buzzer..
can you think about a cheap and easy solution?

Regards

Tal

"I have not failed. I've just found 10,000 ways that won't work."
Thomas Edison

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