Problem $10$

; If the diode in the circuit of Fig. $4\mathrm{.}29($a$)$ is reversed, find the transfer characteristic $v_o$ as a function of $v_{\text{I}}$

$($a$)$

$($b$)$

Figure $4\mathrm{.}29($a$)$ The "superdiode" precision half$-$wave rectifier and $($b$)$ its almost$-$ideal transfer characteristic. Note that when $v_{\text{I}}>0$ and the diode conducts, the op amp supplies the load current, and the source is conveniently buffered, an added advantage. Not shown are the op$-$amp power supplies.