QUESTION $6$

A$.$ Identify the cot shown in figure $1\mathrm{.}0$

B$.$ draw the output wave forms as seen at points $\backslash ($ B$\_\{2\}\backslash )$ and $\backslash ($ B$\_\{1\}\backslash )$

C$.$ Explain the operation of the circuit.

D$.$ Calculate the frequency of the output wave form when switch S is closed. Assume that forward voltage drop across the emitter diode is $0\mathrm{.}7$ V $.$