Analysis of the Effect of Contact Resistance on the Output Accuracy of Standard Signal Generating Circuits

The output signals of standard circuits often change due to the presence of contact resistance, resulting in a decrease in signal accuracy. Therefore, the study analyzes signal attenuation, distortion, power loss, and thermal noise caused by contact resistance in response to changes in contact resistance on the output accuracy of standard signal generating circuits. Using the system to receive the wireless standard signal generating circuit signal can analyze the effect of contact resistance on the signal. The results show that when the resistance of the resistance box is constant, the larger the contact resistance the worse the accuracy of the signal, of which the highest accuracy in the resistance size of Im <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\Omega$</tex>, the accuracy of 94.35%. At the same time the different channels of the system also have an effect on the signal accuracy. Channell has the highest signal accuracy value, up to 91.85%. It can be seen that the contact resistance has a greater impact on the wireless standard circuit signal, the larger the resistance the worse the signal accuracy. It can be concluded that the use of systems or devices with lower contact resistance can effectively improve the accuracy of wireless signals. The study of the impact of the standard signal generating circuit output accuracy has a better guiding role.