Rectifying square wave

Dear All,

Liquid flow sensor - 1Khz - 10Khz
Voltage - 0 -> +5v

Does anyone know how to convert a square wave into a DC
signal.

I think a diode connected to a simple Low Pass Filter would suffice??

How do you calculate the value of R and C???

Is the capacitor is charged from the source through a resistor???

Does the capacitor discharge discharge through the load????

Finally does anyone know the formulas involved??


YOUR INPUT IS ALWAYS VALUED!

I think what you are looking for is a frequency-to-voltage converter. The LM2907 or LM2917 is designed for this purpose.

The datasheet is here:
https://www.electro-tech-online.com/custompdfs/2004/04/LM2907.pdf

Well I'm not sure what your trying to accomplish but the way that is most standard is to use an A/D converter, 8-10-12 bit ( the higher the Bits the greater the resolution ) The higher the clock speed the more samples per second. Describe what your constraints are , that would help.