👉 In electrical engineering, a "preadjustment" is a process used to make an electronic circuit more efficient or effective by adjusting its parameters. This can be done through a variety of techniques such as altering the input impedance (or capacitance) of the component being adjusted, changing the phase shift between components, or modifying the voltage and current levels in the circuit. Preadjustments are often necessary for circuits with high-frequency components, where the gain is already relatively low due to the high frequency. Pre