pls help me to design a frequency to voltage converter with low frequency give high analog voltage and high frequency give low analog voltage.
e.g A 50Hz-1KHz sqare wave will output of 3V to 2V.
Freq->volt converter (LM2907), test for voltage at both freq limits. Use resistor divider and/or an opamp to rescale to range desired. Use another opamp as inverter. It's the rescaling where you have to get "creative"... <<<)))
thanks for your reply.
pls give me some circuit ref for following parameters
f->v converter gives 2V to 3V at input of 50hz to 500hz. then using an opamp inverter i ve to make this 3V to 2V. my basic concern how to make a inversion.
whether it is possible in a f->v converter who gives descending voltage o/p with ascending frequency input or i ve to use another inversion ckt.
thanks for your reply.
pls give me some circuit ref for following parameters
f->v converter gives 2V to 3V at input of 50hz to 500hz. then using an opamp inverter i ve to make this 3V to 2V. my basic concern how to make a inversion.
whether it is possible in a f->v converter who gives descending voltage o/p with ascending frequency input or i ve to use another inversion ckt.
Oops. That will teach me not to copy links without checking the target!
But I wasn't suggesting the F2V bit could be done with only one op-amp; just the processing of the V output.
Oops. That will teach me not to copy links without checking the target!
But I wasn't suggesting the F2V bit could be done with only one op-amp; just the processing of the V output.