Network Resistor

Why Choose Tiangeng

Professional Production

We are a company specializing in the design, development, and production of precision series resistors, precision sampling resistors, precision shunts, precision resistor dividers, non-inductive resistors, and power resistor.

Strict Management System

We implement a high-tech enterprise quality management system and strictly follow ISO9001 service management standards and work processes. We will establish detailed product files for customers, respond to customer service requests on time, and assist customers in solving problems.

Advanced Equipment

We have advanced production equipment, such as precision photolithography machines, high and low temperature testing equipment, Agilent 3458A and other precision instruments, digital high-resistance calibrators, high-temperature sintering equipment, heat treatment equipment, etc.

Wide Application

The products produced are widely used in sensors, scales, rail transit, ships, new energy, precision automation control, power instruments, medical equipment, power automation control, precision instruments, measuring instruments, automobiles, electromechanical railways, communications and other fields.

What is Network Resistor?

A resistor network refers to a number of resistors configured into a given pattern. Most often, these networks use resistors connected end-to-end in series; however, a number of variations exist where the resistors are connected in parallel or series-parallel sequences resembling ladders. In all instances, the resistors in these networks act as voltage dividers, which divide the voltage applied to the circuit into smaller amounts. Practically, resistor networks are used to provide fractional supply voltages in various circuits or to perform digital-to-analog and analog-to-digital conversion functions.

Types of Resistor Networks

Resistor networks can be categorized based on their configuration or arrangement of resistors. There are two main types:

1.Series Resistor Network
In this configuration, resistors are connected end-to-end in a line to form a single path for electrons to flow from one terminal to another. The total resistance of this network, often represented as RTOT, is simply the sum of the individual resistances.

2.Parallel Resistor Network
Here, resistors are connected across each other, offering multiple paths for the electrons to flow. In this case, the reciprocal of the total resistance equals the sum of the reciprocals of the individual resistances.

Internal structure of Network Resistor

Surface resin encapsulation.
Resistor. Determined by the accuracy of resistance elimination.
Protective layer. The material is mostly glass.
Substrate. The material is mostly ceramic, with less mica.
Electrodes.
Pins.

Common Characteristics of Resistor Networks

Tolerance (Absolute Tolerance)
The permitted variation from the specified value of a single resistor. Defined as a ± percentage of the ideal value, e.g. ± 5 %.

Ratio Tolerance
The permitted variation from the specified ratio formed by two or more values within a resistor network. Defined as a ± percentage of the ideal ratio, e.g. ± 0.1 %.

TCR (Absolute TC; Temperature coefficient of Resistance)
The expected change in value of a single resistor in response to a change in temperature. Usually defined in units of PPM/°C. For reference: ± 100 PPM/°C = 0.01 %/°C.

TCR Tracking (Ratio TC)

The expected change in the ratio formed by two or more resistors in response to a change in temperature. Usually defined in units of PPM/°C.

Function of Network Resistor

High Precision Coaxial Shunt Precision Shunt Resistor

01.Circuit Adjustment And Attenuation

Network resistors can be used to adjust the resistance value of a circuit to meet different circuit requirements. By changing the value and connection method of the resistor, signal attenuation, gain, and balance can be achieved.

02.Signal Filtering

Network resistors can be used to construct filtering circuits, which filter signals within a specific frequency range by selecting different resistance values and connection methods. This is very common in fields such as communication systems, audio devices, and sensor interfaces.

03.Impedance Matching

In circuit design, when the impedance between two different circuits does not match, the network resistor can be used to adjust the impedance to achieve the best match for signal transmission. They can be used to match the impedance between amplifiers and loads, improving signal transmission efficiency.

04.Current Limiter

By using network resistors in the circuit, the magnitude of the current can be limited to protect the circuit and components from excessive current damage. This is very important in power supply and power management circuits.

05.Signal Adjustment And Calibration

Network resistors can be used to adjust and calibrate signals in circuits to ensure the accuracy and precision of the system. They play important roles in measuring instruments, sensor interfaces, and automatic control systems.

06.Temperature Compensation

Some network resistors have a temperature coefficient and can be used for temperature compensation in circuits. This is crucial for maintaining the stability and accuracy of the circuit under different temperature conditions.

The Advantages of Network Resistor

Flexibility
One of the key advantages of a resistor network is its flexibility. By using multiple resistors of varying values and configurations, it is possible to create a network that can perform a wide range of functions. For example, a resistor network can be used to attenuate signals, divide voltages, and filter frequencies.

Precision
Another advantage of resistor networks is their ability to provide precise levels of resistance. By using multiple resistors in a network, it is possible to achieve very specific resistance values that may not be achievable with a single resistor. This can be useful in applications where precise control is required, such as in instrumentation and measurement systems.

Cost Efficiency

Resistor networks can also be cost-efficient compared to using multiple individual resistors. By purchasing resistors in bulk and assembling them into a network, it is possible to achieve the same functionality as using individual resistors, but at a lower cost.

Space Efficiency

Resistor networks can also be more space-efficient than using multiple individual resistors. By arranging resistors in a network configuration, it is possible to achieve the same functionality as using individual resistors, but in a smaller physical space. This can be useful in applications where space is at a premium, such as in portable or compact devices.

Improved Reliability

Using a resistor network can also improve the overall reliability of a circuit. By using multiple resistors in a network, it is possible to distribute the load more evenly across all of the resistors. This can reduce the likelihood of any one resistor failing and causing the entire circuit to fail.

Applications of Network Resistor

Low Temperature Drift Ultra Precision Resistor

Electronics Manufacturing

Network resistors are used in voltage divider configurations to achieve specific voltage levels in electronic circuits. This is crucial in manufacturing various electronic devices where precise voltage regulation is required.

Telecommunications

In telecommunications equipment, network resistors are employed for signal conditioning, ensuring that signals are properly attenuated or amplified as needed. They contribute to maintaining signal integrity in communication networks.

Automotive Industry

Network resistors play a role in calibrating sensors used in vehicles. They assist in adjusting the sensitivity of sensors, optimizing their performance for tasks such as engine control, airbag deployment, and other critical functionalities.

Aerospace Applications

In aerospace, resistor networks are utilized in instrumentation systems for measuring and controlling parameters such as temperature, pressure, and altitude. These systems are vital for the proper functioning of aircraft and spacecraft.

High Precision Current Detection Resistor

Medical Devices

Network resistors are incorporated into medical devices for patient monitoring. They help in precise measurement of physiological parameters and contribute to the accuracy of data collected by devices such as ECG machines and blood pressure monitors.

Energy Sector

In power electronics, network resistors are used for power supply regulation. They assist in controlling and distributing electrical power efficiently, ensuring stability in energy systems.

Selection Guide for Resistor Networks

Circuit Type: Describes any internal connections among the individual resistive elements within an array.

Resistance(Ohms): Characterizes the nominal resistance of a current path through a device.

Tolerance: Characterizes the extent of permitted variability of overall device resistance among samples of a given part number, resulting from variations in manufacturing.

Number of Resistors: The quantity of distinct resistive elements incorporated within an array.

Resistor Matching Ratio: The variance in tolerance between resistive elements within an array.

Resistor-Ratio-Drift: The variance in temperature coefficient between resistice elements within an array.

Number of Pins: The number of electrical connections to a resistor array that are present and user-accessible.

Power Per Element: The maximum allowable power dissipation for any individual resistive element within an array.

Temperature Coefficient: Characterizes changes in device resistance as a function of temperature.

Operating Temperature: Recommended operating temperature, typically given in a range or as a maximum. Exceeding these temperatures may affect performance or damage the device and/or other system components.

Applications: Describes device features, capabilities, or intended applications for the primary device function.

Mounting Type: How the device is connected to the PCB.

Package/Case: The industry standardized name for the parts overall size.

Supplier Device Package: Specialized size terminology from the supplier for their device.

Size/Dimension: The overall Length, Width, and Height of the part.

Height-Seated(Max): The height above the mounted surface of the part.

Precautions for Resistance Measurement

Before measurement, it is necessary to check whether the multimeter is working properly, such as whether the battery is fully charged and whether the contact is good.

When measuring resistance, the circuit should be disconnected first to avoid damaging the multimeter or the tested component.

When measuring, attention should be paid to selecting the appropriate range to avoid inaccurate readings caused by exceeding the range.

When measuring high resistance values, attention should be paid to eliminating the influence of contact resistance. The four wire method or specialized high resistance measurement instruments can be used.

When measuring low resistance values, attention should be paid to avoiding interference signals, such as touching the probe by hand or connecting to other circuits.

When measuring circuits with large capacitance, attention should be paid to selecting the appropriate frequency and voltage range to avoid errors.

When measuring AC circuits, attention should be paid to selecting appropriate AC/DC switching switches and ensuring the correct connection of positive and negative polarity.

When measuring active components, attention should be paid to turning off the power and discharging before conducting the measurement to avoid damaging the multimeter or the tested component.

Our Factory

Based on many years of producing various precision resistors, our company designs, develops, and produces various resistor cabinets, coaxial resistors, and metal foil standard resistors.

Company Honor

Based on the high-tech enterprise quality management system, we strictly follow ISO9001 service management standards and work processes.

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Frequently Asked Questions

Q: What is the function of a resistor network?

A: A resistor network is an interconnection of resistors, arranged in a particular pattern, designed to perform a specific function within an electronic circuit. These networks are fundamental building blocks in electronic devices and are used to control voltages and currents.

Q: What is the purpose of a resistor?

A: A resistor is an electrical component that limits or regulates the flow of electrical current in an electronic circuit. Resistors can also be used to provide a specific voltage for an active device such as a transistor.

Q: What is a resistance network?

A: A constant-resistance network in electrical engineering is a network whose input resistance does not change with frequency when correctly terminated. Examples of constant resistance networks include: Zobel network. Lattice phase equaliser. Boucherot cell.

Q: What does a resistor do to a signal?

A: In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses.

Q: What are the 3 purposes of a resistor?

A: In electronic circuits, resistors are predominantly used to lower the flow of current, divide voltages, block transmission signals, and bias active elements.

Q: What are the advantages of a resistor network?

A: Resistor networks allow designers to achieve higher levels of precision measurement and signal conditioning than with discrete components. They can achieve their goal of ratiometric stability reliably, and by using known MIL qualified designs.

Q: What happens if there is no resistor in a circuit?

A: It is impossible to have a zero resistance wire because there are factors of the wire to provide resistance. If the resistance is very low, however, then it would probably trip a circuit breaker or blown a fuse.

Q: Does a resistor change voltage?

A: The greater the value of resistance, the higher the voltage drop across that resistor. Using Ohms law you can determine the voltage across each resistor.

Q: How to measure a resistor in a network?

A: In most cases, a resistance measurement is made on each element in the network. Resistance measurements are made either by applying constant current or constant voltage. Performing these tests requires the use of switching hardware to switch the source and measurement signals to and from each element of the network.

Q: What are the different types of resistor networks?

A: Single row pins - isolated, individual resistors, each having two pins. Or one common pin with all resistors bussed to remaining pins. Dual row pins - isolated, individual resistors each with two adjacent pins. Alternatively one common pin with all resistors bussed to remaining pins.

Q: What happens when a resistor fails?

A: This can have several consequences. The resistance value can shift permanently, the lifetime can be significantly reduced, or the resistor is completely damaged resulting in an open circuit. In extreme cases the excessive power can even melt or catch on fire.

Q: What happens when a resistor is low?

A: If the resistance value is too low, a high current will flow through the pull-up resistor, heating the device and using up an unnecessary amount of power when the switch is closed. This condition is called a strong pull-up and is avoided when low power consumption is a requirement.

Q: Why put a resistor in a circuit?

A: Resistor is used to resistance the flow of current. When resistor is placed in a circuit, the current flow decreases when current passes through the resistor. The part of current energy dissipate in the form of heat in resistor, thus decrease the total current.

Q: What is the most important use function of a resistor?

A: A resistor is a passive electrical component with the primary function to limit the flow of electric current.

Q: How much voltage does a resistor drop?

A: According to Ohm's law, the voltage drop, V, across a resistor when a current flows through it is calculated using the equation V=IR V = I R, where I equals the current in amps (A) and R is the resistance in ohms (Ω).

Q: Can a wire have 0 resistance?

A: In the context of any two terminals of a circuit: A short circuit implies that the two terminals are externally connected with resistance R=0 , the same as an ideal wire. This means there is zero voltage difference for any current value. (Note that real wires have non-zero resistance!)

Q: Do resistors drop voltage or amperage?

A: While resistors don't directly decrease voltage, they do cause a voltage drop across themselves due to the reduced current flow. With all the other variables held constant, adding a resistor in series to a circuit will decrease the current (amperage).

Q: Does a resistor reduce voltage or amps?

A: The answer is both. Although dabbling in electronics for years, I repeatedly failed to fundamentally understand how voltage, current, and resistance worked together in a circuit.

Q: What happens to voltage when it crosses a resistor?

A: Voltage doesn't pass through a resistor, current does. When current pass through it a voltage is developed across the resistor according to the formula V=I*R where I is the current through it. So a 100 ohm resistor with. 1 amps flowing through it will develop a 10 volt drop across it (V=100*.

Q: How do you check a resistor without a multimeter?

A: You could look at the resistor based on the color code, or the value printed on it, to determine its value.

Q: What does the S color code of resistor do?

A: The colour code values for denoting the tolerance rating of resistors are given as: Brown = 1%, Red = 2%, Gold = 5%, and Silver = 10 %. If the resistor has no fourth tolerance band then its default tolerance will be 20%.

Q: How do you know if a resistor is in parallel or series?

A: In a series circuit, the resistors are connected end-to-end, creating a single path for the current to flow through each resistor in sequence. In a parallel circuit, the resistors are connected across the same two points, providing multiple pathways for the current to flow through each resistor.

Q: How do I know if a resistor is bad?

A: If the resistor shows signs of blackening or charring, it may be damaged by excess current flow. A resistor showing blackening or charring should be replaced and discarded. Read the resistor value visually.

Q: What are the signs that a resistor is defective?

A: If the resistance reading is significantly different from the labeled resistance value, or if there is no continuity (infinite resistance) when the resistor should conduct, then it may be considered bad. Additionally, physical signs such as discoloration, burning, or a burnt smell can also indicate a bad resistor.

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