What is the role of chip resistors in circuits

What is the role of chip resistors in circuits

A resistor is a current-limiting element, and the conductor has a large resistance to the current, so we say that its resistance is large, and vice versa, it is said that its resistance is small. But resistance does not disappear because there is no current flowing through the conductor. Resistance is an inherent property of a conductor. Even if there is no current flowing through the conductor, its resistance still exists.

The role of resistors:

1. Voltage division, when the resistor and another component are in series, the current flowing through the resistor and the bulb is the same, and the sum of the respective voltages of the resistor and the bulb is equal to the total voltage across the resistor and the bulb as a whole. At this time, the resistor acts as a voltage divider.

Second, shunt, when a resistor and another component such as a bulb are in parallel in the circuit, the voltage across the resistor is the same as the voltage across the bulb, and the sum of the current flowing through the resistor and the current flowing through the bulb is equal to the current flowing through the resistor and the bulb total current. At this time, the resistor acts as a shunt.

3. Impedance matching: Impedance matching refers to the process of using some methods to make the load impedance and the internal impedance of the excitation source adapt to each other in order to obtain a working state of maximum power output during the signal transmission process.

Fourth, filtering, in the RC charging and discharging circuit composed of resistors and capacitors in series, at first switch S is connected to point B, there is no charge on capacitor C, and the voltage at both ends is zero, then switch S is placed at point A, at this time the power supply passes through The resistor R begins to charge the capacitor. When the charge on both ends of the capacitor increases to the balance of the circuit, the power supply stops charging the capacitor. Then, the switch S is placed at point B, the capacitor begins to discharge, and the charge on both ends gradually decreases to zero. No more discharging, then switch S to point A and start charging... In this infinite cycle of charging and discharging, we call the role played by the resistor R as filtering.

PAGOODA is a professional manufacturer of electronic components, with more than ten years of industry experience and an excellent technical team, looking forward to working with you!