LOW POWER PROPORTIONAL CONTROL CRYSTAL OVENS TYPE M6 AND N13.

This report concerns the investigation of methods and techniques as well as the selection of materials and the evaluation of electronic components used in the final model. During this period, both types were re-designed several times in order to meet the electrical, thermal, and mechanical requirements of the program. All considerations which led to the adopted designs are presented and discussed. For detailed data, reference should be made to the four previously issued quarterly reports. Also described in this report are the difficulties encountered, their solutions, and the reasons for not meeting some of the objective specifications such as warm-up for the N13 oven.