Abstract
The purpose of this study was to create a new model of a high-voltage measuring amplifier that would include several stages of operational amplifiers to increase the operating voltage range by sequentially “virtual” connecting the output voltages of each stage. The research methodology included the use of cascaded amplifier coupling, an additive error correction scheme, as well as modelling and computational studies to optimise the design of high-voltage operational amplifiers. The study results showed that the use of high-voltage operational amplifiers RA94 provides high stability and accuracy of the output signal even under variable loads. The cascaded connection of the amplifiers helped to expand the frequency range and increase the operating voltage, which increased their efficiency. The use of an additive error correction scheme significantly reduced signal distortion, improving its quality. Modelling and computational studies optimised the design of the amplifiers, which contributed to the achievement of high technical characteristics. By combining these methods, a reliable system with improved parameters was created. The amplifiers have shown promise for a wide range of industrial and scientific applications. They can operate in difficult conditions with high accuracy. The study confirmed the importance of integrating modern technologies into the development of electronic systems. Computational studies of a new model of a high-voltage measuring amplifier demonstrate that the use of several stages of operational amplifiers together with an additive error correction scheme can significantly expand the frequency range of the amplifier and increase the operating voltage range, which leads to improved measurement quality