This is a design circuit for a pulse width to analog demodulator circuit. This circuit is used to demodulate the pulse width to analog voltage level. This is the figure of the circuit; Using input pulse width range of 0 to 1 microsecond, this circuit can produces Output range of 0 to 10 v. The input pulse is integrated and the final value is held
until next pulse arrives. Then for next integration, the output return to zero.