This week, start custom made compression spring, this use to give force to rotate shaft. The material was selected by using data sheet. Figure show the data sheet was to custom made this spring.
This week, make inverter circuit and charging circuit. The Inverter is use to convert Dc to Ac, since the output that produce in dc, so it need to convert. The charging circuit is use to charge the battery in dc, The battery use as supply. Figure show the schematic diagram both circuit.