differences at output on and off

Jul 16, 2008 1 Replies

hai



i am using LM393 as output ON and OFF



It is showing ,the output will be ON at 12.2V input voltage and the output will OFF at 10.9V input voltage at normal room temperature



At AC room temperature the ON and OFF voltages like 12.5V and 11.3V



Can anybody tell me what is the problem , why it is behave like this


Thank u


Thermal drift in your input resistors or reference. Schematic? JF

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