The solar cell array has already been designed by another company, so you only need to design the LED circuit. The solar array's composite $\backslash ($ I$-$V $\backslash )$ equation is

$\backslash [$

I$=$I$\_\{0\}\backslash$left$\backslash \{$e$^\{\backslash$frac$\{$q V$\}\{$n K T$\}\}-1\backslash$right$\backslash \}-$I$\_\{$L$\}$

$\backslash ]$

Table $1$ Data for Solar Array Equation

The motor's $\backslash ($ I $\backslash )-\backslash ($ V $\backslash )$ curve is given by the equation:

$\backslash [$

I$=(58\backslash$mathrm$\{$~mA$\})\backslash$times V$^\{0\mathrm{.}1\}$

$\backslash ]$

The motor will require a minimum voltage of $1\mathrm{.}4$ Volts in order to move the car. Higher values of voltage will cause the car to go faster. Lower values will not damage the motor but it will not move the car.

$-$ Discuss performance of your circuit under different lighting conditions: Under what light conditions $($indoors$,$ outdoors on a cloudy day, outdoors on a sunny day$),$ will both the LEDs and motor run? Can you design your circuit so that under weaker lighting conditions the LEDs will still light even if the motor will not run?

A:

$-$ Discuss safety issues: Is there any danger of the LEDs exploding on an unusually bright sunny day?

A: