But an LM393 dual comparator has a minimum output current of only 6mA
A 393 or 339 comparator only sinks current. It doesn't source current, it needs a pull-up resistor for that.
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But an LM393 dual comparator has a minimum output current of only 6mA
R3 is the pullup resistor for the output of the comparator. R3 also supplies base current for the output transistor.A 393 or 339 comparator only sinks current. It doesn't source current, it needs a pull-up resistor for that.
hi,The schematic about the potentiometer is correct?