reverse voltage

[kavhra]

Hello
I have a low pass filter in the output of a diode bridge (RC) I use NI Multisim when I measure the voltage drop on my resistor RC filter I see it is reverse (negative) I don't know what is reason of that.
please help
Thanks

 

[KlausST]

Hi,

show your schematic including the voltmeter wiring. Hand drawn is O.K.

Klaus

 

[D.A.(Tony)Stewart]

Voltage drop polarity depends on the convention for positive current flowing from the more positive source.

Did you put the -ve lead on the output and +ve lead towards source at diode bridge?