Integrator circuit. This is only to get you facing in a direction for thought/research. Thats all I'm willing to help on a school project. You should approach your professor/teacher and read your text books. >>> "Bruno L. Albrecht" 28 May 09 08:30:30 >>> actually is the final project of a discipline... On Thu, May 28, 2009 at 8:59 AM, Thomas C Sefranek wrote: > ----- Original Message ----- > From: Bruno L. Albrecht > To: Microcontroller discussion list - Public. > Sent: Thursday, May 28, 2009 7:34 AM > Subject: Re: [EE] frequency to voltage converter (FVC) > > > This is actually part of a speed controlled motor controller. Know what I > mean? I have to control the motor's voltage in order to keep its speed > constant. This means I'll have to compare the speed with some reference > and > then raise or lower the motor's voltage to keep its speed as I want > (probably this reference will be adjustable). I should do all this only > with > opamps, resistors, capacitors, etc. > By black boxes, I meant I can't use Frequency-to-Voltage ICs, I should do > one myself. And can't use any "digital devices", such as a > microcontroller, > or a A/D converter... > > Cheers, > Bruno -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist