A bipolar transistor buffer circuit is required which will drive a current through a light$-$emitting diode. $($a$)$i$)$Sketch the schematic of a suitable buffer circuit clearly labelling each compoment, the input voltage and the output voltage. ii$)$Assuming ideal components, sketch the voltage transfer characteristic of the circuit. iii$)$If the forward current, IF$,$through the diode will not to exceed $40$mA and the forward voltage, VF$,$across the diode will not to exceed $3$V$,$establish a suitable supply voltage. $($b$)$The circuit is to be driven by a logic circuit with the following static electrical characteristics:

Design the circuit using the $3$C$2$BJT$1$and $3$C$2$LED$1$as the active components $($relevant excerpts from the datasheets appended$).$In particular, clearly identify the values of all additional passive components and the rationale for their selection with reference to the operating conditions of the circuit where appropriate.

give me a hand draw diagram