It works pretty well with the circuit I posted. Admittedly, it is a complex circuit.

wow
realy worrrrrrk
thanks bro
but this is very big and complex
you can make it simple?

 

wow
realy worrrrrrk
thanks bro
but this is very big and complex
you can make it simple?

In a word....

No.

 

Exactly
and when
separate control voltage=0 frequency output=0
frequency output must changed by separate control voltage
this is possible?

You said twice that the frequency range does not matter, but now you're saying you need the bottom of the range fixed so that 0V gives 0Hz, ie. a flat DC voltage?

Back in #7 it was mentioned that you could get a voltage-to-frequency conversion using the control pin (5) of the 555. Is that not acceptable? Bill asked for the map of voltage to frequency that you want.

We're a long way into this thread and still don't know what you want. There are many VCO circuits you can find, but choosing one requires knowing the specifications.

 

You said twice that the frequency range does not matter, but now you're saying you need the bottom of the range fixed so that 0V gives 0Hz, ie. a flat DC voltage?

Back in #7 it was mentioned that you could get a voltage-to-frequency conversion using the control pin (5) of the 555. Is that not acceptable? Bill asked for the map of voltage to frequency that you want.

We're a long way into this thread and still don't know what you want. There are many VCO circuits you can find, but choosing one requires knowing the specifications.

thanks for answer
i just want to convert voltage to frequency with 555
but all circuits exist about this just convert VCC to frequency
i want convert my input voltage to frequency not VCC

 

thanks for answer
i just want to convert voltage to frequency with 555
but all circuits exist about this just convert VCC to frequency
i want convert my input voltage to frequency not VCC

You are misinformed. I don't remember seeing a vco that converts vcc to frequency.
Have a look at LM331.
There are others available.