gillyne

Thanks for your help. ;) Somehow, I face another problem dealing with my TC9400 :-\. It is a frequency to voltage IC from MICROCHIP. I had inputed the frequency supply at pin 11, and the result get at pin12 is very low. The frequency input is 4k, 10k, 20k, 40k; I get more or less around 1.23v. Is the diagram wrong? Thanks.

Hi. I am currently working on FTV projects. I am using TC9400 to convert frequency to voltage and TL071 to get rid of ripple and ADC output. I am using single supply for both case. May I know how should I modify the TL071 to be 10v-GND? Is there any additional circuit? ??? Attach on left is the circuits that I am working on, on right is the inverting single supply opamp taken from audioguru. Thanks in advance. :)