The main function of Automatic Regulator is to get the close regulation of the terminal voltage of synchronous machine. The fast growth and complex nature of power system network has broadened the concept of Regulating system. Automatic Excitation control should hold voltage recovery after system faults, and stable operation of synchronous machine. This article describes the design of the generalized Automatic Voltage Regulator to meet all the requirements. In the designed voltage regulator totally solid-state electric components are used. It is easily generalized by adjusting the sensitivity of the input circuit and using appropriate output devices, which can handle the required power. It can be directly employed for alternator with capacity upto 500 KVA. For the larger synchronous machine the excitation power is very high, so this can be used to control the excitation by putting another D.C. generator and calling the controlled exciter as pilot exciter. The Regulator includes components required to handle the heavy field currents and high forcing voltage needed for alternator and the precise and sensitive devices are used to control these quantities. The simple rectifier and Transistor PWM switch is used in the control circuit that gives the higher forcing function. The three major advantages of solid-state regulator are cost, weight and highly controllable dynamic response. The inherent time delay and non-linear characteristics of D.C. machine has proved it to be an inferior regulator compared to Electronic regulator. The essential parts of the regulator are: (a) The measuring device (b) Error Amplifier (c) The driver for output devices (d) Adequate output devices to handle large excitation currents.