lukas Posted June 27, 2004 Report Share Posted June 27, 2004 why I use IC 7905 with 1 gnd 2 input and 3 output not afford -5 V but when I saw in multimeter one with other multimeter have report -2,... V not -5 V. And i ever buy 7905 other but consistent with the report is same. Why ??? please help me and thanks very much :) Quote Link to comment Share on other sites More sharing options...
ante Posted June 27, 2004 Report Share Posted June 27, 2004 Lukas,What Quote Link to comment Share on other sites More sharing options...
fatoota Posted June 28, 2004 Report Share Posted June 28, 2004 lukas,you must be sure of your input voltage, your connections should be correct from the first time, i mean if you reversed 2 and 3 and then discoverd your mistake, the ic may be burnt out and you will use it defected in the next time.note that the input max voltage is -7 and input min voltage is -25 try again ;) Quote Link to comment Share on other sites More sharing options...
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