1. The student tested a power supply circuit using a transformer instead of an LNK306 IC due to insufficient current. A drive motor circuit was also tested using a TIP41 transistor instead of a 2N3904 due to the higher current needs of the motor. 2. Both circuits were tested successfully and can be combined. The power supply provides a constant 12V output. 3. For next week, the student will make a PCB and do further calculations to improve the design by addressing weaknesses like the transformer taking up space and the regulator getting hot under load.