MISU.RSG
Member level 1
Hi dear
I need to use a switch to check the state of a part but the line and switch are located in a long-distance and noisy place.
I adjust R1 to drain 10mA when switch S1 is closed and CD voltage is 3 volts. I'm confused to use 24V instead of 3V.
what`s your idea? is there any better circuit?and I donsyoura?Isthereanybeer∘uit→use?andIdont want to use an Opto coupler.
thank you
I need to use a switch to check the state of a part but the line and switch are located in a long-distance and noisy place.
I adjust R1 to drain 10mA when switch S1 is closed and CD voltage is 3 volts. I'm confused to use 24V instead of 3V.
what`s your idea? is there any better circuit?and I donsyoura?Isthereanybeer∘uit→use?andIdont want to use an Opto coupler.
thank you