A trimmer resistor, commonly known as a trim-pot (trimming potentiometer), is a small adjustable resistor designed for fine-tuning, calibration, and preset adjustment of electronic circuits. Unlike standard potentiometers that are frequently adjusted by the user, trimmer resistors are usually set once during manufacturing, testing, or servicing, and then left unchanged for long periods. Trimmer resistors […]
A rheostat is a variable resistor specifically designed to control current in an electrical or electronic circuit without interrupting the circuit. Unlike potentiometers, which are mainly used for voltage division, rheostats are typically employed in series with a load to adjust current flow. Rheostats are widely used in power control applications, such as motor speed […]
Every electronics project reaches a point where the circuit works, the code runs, and the breadboard prototype does what it is supposed to do. The next step is putting it into something that protects the board, manages heat, and looks like an actual product rather than a tangle of wires zip-tied to a plastic box. […]
Surface Mount Device (SMD) resistors, also called chip resistors, are among the most widely used passive components in modern electronic circuits. With the shift from through-hole technology (THT) to surface-mount technology (SMT), SMD resistors have become the industry standard for compact, high-density, and automated PCB assembly. This article presents an in-depth, technical explanation of SMD […]
A fusible resistor is a safety resistor designed to do two jobs at once: limit current and act like a fuse. Under normal conditions it behaves like a regular resistor, but if too much current flows, it overheats and safely opens the circuit, preventing damage or fire. You’ll often find fusible resistors in power supplies, […]
A wire wound resistor is a type of fixed resistor in which the resistive element is made by winding a metal alloy wire around an insulating core. Unlike carbon or film resistors, the resistance value in a wire wound resistor is determined primarily by the length, diameter, and material of the wire used. Wire wound […]