Intro to 8 types of Resistors

Summary

This video introduces nine types of resistors, exploring their applications and specifications. It covers basic carbon film resistors, metal film resistors with better tolerance, thin film resistors used in modern electronics, large power resistors for high-voltage projects, and carbon composition resistors. The script also discusses resistor arrays, printed carbon resistors for mass production, shunts for ammeter applications, and wire wound resistors for high-current uses. These components vary in size and application, from miniature devices to high-powered equipment, and are essential for different types of circuit boards.

Takeaways

• 🔧 Resistors come in various shapes and sizes, from large resistors for high-power applications to miniature resistors in small devices.
• 📏 Through-hole resistors are found in older circuits and hobby projects, and are often salvaged for future use.
• 🎨 Carbon film resistors are basic resistors with color bands indicating their resistance and tolerance levels.
• ⚙️ Metal film resistors are similar to carbon film resistors but offer higher precision and better temperature coefficients, making them ideal for precise applications like multimeters.
• 💡 Thin film resistors are commonly used in modern electronics, especially surface-mount devices (SMD), with tolerance levels between 1-5%, suitable for general analog circuitry.
• ⚡ Power resistors are large, low-resistance resistors designed for high-voltage or high-current applications like motors.
• 📦 Carbon composition resistors were one of the first mass-produced resistors but are rarely used now due to poor tolerance and high cost.
• 🛠️ Printed carbon resistors are cost-effective resistors printed directly onto a PCB for less accuracy-critical applications.
• 🔋 Shunts are specialized low-resistance resistors used in ammeters, known for their high accuracy and ability to handle large currents.
• 🔩 Wire-wound resistors consist of wire wound around an insulating core and are used in high-power applications.

Q & A

What is the primary use of large resistors?

Large resistors are often needed for high-power situations, such as motors or other high-powered equipment.

Where are miniature resistors commonly found?

Miniature resistors are commonly found in very small devices where space is limited.

What is a standard through-hole resistor, and where is it typically found?

A standard through-hole resistor is a type of resistor commonly found in older circuits and hobby circuits.

What do color bands on a carbon film resistor represent?

Color bands on a carbon film resistor signal the resistor's resistance and tolerance levels.

How do metal film resistors differ from carbon film resistors?

Metal film resistors have greater tolerances and better temperature coefficient properties compared to carbon film resistors, making them suitable for situations requiring high accuracy.

In what type of applications are thin film resistors commonly used?

Thin film resistors are commonly used in surface mount technology (SMT) and general-purpose analog circuits, where their typical tolerance level of 1-5% is sufficient.

What is a power resistor, and in what applications is it used?

A power resistor is a large resistor with low resistance values (0-100 ohms), used in high-power applications such as motors and other high-current equipment.

Why are carbon composition resistors rarely used in modern manufacturing?

Carbon composition resistors are rarely used because they have poor tolerances and are more expensive compared to other types of resistors.

What is a printed carbon resistor, and when is it used?

A printed carbon resistor is a simple type of resistor made by painting carbon compound directly onto a PCB between two contact points. It is used when resistor accuracy is not critical and to save costs in mass production.

What are shunt resistors used for?

Shunt resistors are used in ammeter applications to measure high currents. They are highly accurate and can handle large current loads.

How are wire wound resistors constructed, and what materials are commonly used?

Wire wound resistors are constructed by winding wire around an insulating core, often made from materials like necron, to provide resistance.