One of a series of training manuals prepared for enlisted personnel in the Navy and Naval Reserve, this self-study program is designed to enable the electrician's mate to prepare himself for the increased responsibilities of a senior petty officer with ability to operate, maintain, and repair voltage and frequency regulating equipment transistorized control devices, automatic degaussing systems, no-break power supplies, and electrohydraulic load-sensing governors. Contents include an 11-chapter text followed by a subject index, occupational standards, and the associated nonresident career course (five reading assignments with technical questions based on the occupational standards in the respective assignment). Chapter headings are (1) Career Program, (2) Safety, (3) Voltage and Frequency Regulation, (4) Transistorized Control Devices, (5) Automatic Degaussing, (6) Gyrocompasses, (7) No Break Power Supplies, (8) Electrohydraulic Load-Sensing Speed Governors, (9) Engineering Casualty Control, (10) Maintenance Administration, and (11) Visual Landing Aids (VLA). The appendixes include temperature and metric conversion tables. (HD)