Problem $\backslash$#I less than IuF are intended to be opens, and "ned "are connected together. Q$15,$ Q$35$ are intended to be shorts. The two points mark cutoff. Q$23$ is connected as a diode and can be and are for overload protection and are normally resistance. You may assume that all transistors hat be $100$ and high Early voltage. Q$33,$ Q$41,$ Q$43,$ state whether the transistor is being used as part of a current source or as part of an amplifier, and if it is an amplifier, give the type $(\backslash ($ C E$,$ C C$,$ C B $\backslash ),$

$($b$)$ Which stages are likely providing most of the voltage gain?

$($c$)$ Estimate the voltage gain of the section of the amplifier formed by Q$3$ through Q$9.$ Note that your answer may depend on other transistors in the circuit.

Hint on part $($c$)$: consider that $\backslash (\backslash$mathrm$\{$V$\}\_\{\backslash$mathrm$\{$BE$\}23\}=0\mathrm{.}7\backslash$mathrm$\{$~V$\}\backslash ).$

Q$3,$Q$5$ Current Source

Q$7,$Q$9$ Diff Amp

Q$11,$ Q$13$ Current Source

Q$17,$ Q$19$ Current Source

Q$21$ Diff Amp

Q$25$ Gurrent Source

Q$27$

Q$29$ Common Drain

Q$31$ Commor Drair

Q$33$ Current Source

Q$41$