I didn´t know where else to post, I am new here... if its wrong forum tell me... I am a student and have some questions on this circuit...
here it is...
http://i531.photobucket.com/albums/dd351/Switch_639/V-FConverter-1.jpg
how do I adjust the gain with the 2K rheostat and know its correct? also the optional offset adjust of the OPAMP, when is this correct? at moment I have the cct built... I am getting output at pin3 of LM331... its a small signal around +/- 1V...
any help will be appreciated... I can not get a square wave pulse on oscilloscope either, but I might be trying to read it in incorrect manner...
here it is...
http://i531.photobucket.com/albums/dd351/Switch_639/V-FConverter-1.jpg
how do I adjust the gain with the 2K rheostat and know its correct? also the optional offset adjust of the OPAMP, when is this correct? at moment I have the cct built... I am getting output at pin3 of LM331... its a small signal around +/- 1V...
any help will be appreciated... I can not get a square wave pulse on oscilloscope either, but I might be trying to read it in incorrect manner...