The role and principle of chip resistors

Chip fixed resistor, directly translated from Chip Fixed Resistor, commonly known as SMD Resistor, is one of the metal glass glaze resistors. It is a resistor made by mixing metal powder and glass glaze powder and printing it on the substrate by screen printing. Resistant to humidity and high temperature, with a small temperature coefficient. It can greatly save the cost of circuit space and make the design more refined.

 

1. What is a chip resistor ?

Chip fixed resistor , directly translated from Chip Fixed Resistor, commonly known as SMD Resistor, is one of the metal glass glaze resistors . It is a resistor made by mixing metal powder and glass glaze powder and printing it on the substrate by screen printing. Resistant to humidity and high temperature, with a small temperature coefficient. It can greatly save the cost of circuit space and make the design more refined.

chip resistor
 

2. The working principle of chip resistors

A two-terminal electronic component made of resistive material with a certain structural form that can limit the flow of current in the circuit. A resistor whose resistance cannot be changed is called a fixed resistor. Variable resistance is called potentiometer or variable resistor . An ideal resistor is linear, that is, the instantaneous current through the resistor is proportional to the applied instantaneous voltage. Some special resistors, such as thermistors , varistors and sensitive components, have a nonlinear relationship between voltage and current. Resistors are the most widely used components in electronic circuits, and usually form different series according to power and resistance value for circuit designers to choose. Resistors are mainly used to adjust and stabilize current and voltage in circuits, and can be used as shunts and voltage dividers, as well as circuit matching loads.

chip resistor

3. The role of chip resistors

(1) One of the functions of chip resistors: voltage divider

When a resistor and another component such as a light bulb are in series in a circuit, the same current flows through the resistor and the light bulb, and the sum of the individual voltages of the resistor and the light bulb is equal to the total voltage across the resistor and the light bulb as a whole. At this time, the resistor acts as a voltage divider.

(2)The second role of chip resistors: shunt

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

Top