hi i need to sense a current in a AC aplication so that i have a indication that current is flowing (switched on)
alsio i need to give that signal to an imput of a plc (for monitoring)
i have this idea and it works but is not perfect for all situations (see schematic)
if the current is lower than 1 Amp i will use the 1N4007
if the current is lower than 3 amp i will use the 1N5408
but i have to monitor a 11 KW pump that consumes +/-24 Amp
diodes are getting a bit expensive in this case
is there an other solution to tackel this problem?
Thanks
Robert-Jan
alsio i need to give that signal to an imput of a plc (for monitoring)
i have this idea and it works but is not perfect for all situations (see schematic)
if the current is lower than 1 Amp i will use the 1N4007
if the current is lower than 3 amp i will use the 1N5408
but i have to monitor a 11 KW pump that consumes +/-24 Amp
diodes are getting a bit expensive in this case
is there an other solution to tackel this problem?
Thanks
Robert-Jan