It should be clear from your simplified circuit that you do not have the correct voltage source required to manufacture the client's circuit. One solution would be to use a voltage divider (recall lab 2 session A task 10) to reduce the output voltage of one of your existing fixed voltage sources (this is a good solution because resistors are much cheaper than voltage sources, and fixed voltage sources are much cheaper than variable voltage sources). However, a colleague brings to your attention a device known as a linear voltage regulator that can do the same job better than a voltage divider with only a small increase in cost. At your request, your client agrees that you can use an LM317 linear voltage regulator. Your colleague supplies you with the circuit diagram shown in Fig. 3, claiming that it can be used to reduce the input voltage Vs to a lower output voltage Vout. Do not concern yourself with how the LM317 works, but rather with what it does (n.b., this may be an irritating statement, especially to students who want to understand how things work - however, it's often an important time-management skill to be able to figure