The schemes of controlled harmonic signal phase shifter are fairly simple and divided into two types: with lagging and leading phase shift angle. The schemes ensure signal phase shift from 0 to 180° and have transfer factor equal to 1 over the broad input ranges. However, these schemes have such flaws as relatively narrow phase shift angle range, input signal frequency impact on phase shift value, nonlinear regulating characteristic, and manning. Controlled phase shifters improvement has allowed the elimination of some flaws. In this work, principles of construction and functioning of existing controlled phase shifters and their applications are described. The results of the development and research of a controlled phase shifter providing a phase shift of a harmonic signal within 360°, which does not depend on the frequency of the input voltage while maintaining the linearity of the transfer characteristic, are given. A block diagram and the main dependencies explaining the operation of the phase shifter are presented. A simulation model of the phase shifter in the Matlab & Simulink environment has been compiled and oscillograms of its operation have been obtained, confirming its operability. It was demonstrated that the developed phase shifter provides a phase shift of the input sinusoidal voltage up to 360°, when the control signal changes within 10 V. The application of the developed phase shifter simplifies the construction of various analog shapers and multiphase harmonic oscillators, frequency multipliers and dividers, alternating voltage to DC converters, etc.